List of Milwaukee Road locomotives
Encyclopedia
Locomotives of the Milwaukee Road, officially the Chicago, Milwaukee, St. Paul and Pacific Railroad
Chicago, Milwaukee, St. Paul and Pacific Railroad
The Milwaukee Road, officially the Chicago, Milwaukee, St. Paul and Pacific Railroad , was a Class I railroad that operated in the Midwest and Northwest of the United States from 1847 until its merger into the Soo Line Railroad on January 1, 1986. The company went through several official names...

.
Steam Class A (4-4-2), B (4-6-0), C (2-8-0), F (4-6-2, 4-6-4), G (4-6-0), H (4-4-0), I (0-6-0), J (0-4-0), K (2-6-2), L (2-8-2), M (2-6-0), N (2-6-6-2), S (4-8-4), X (Shays)
Diesel ALCO, Baldwin, Davenport, EMD (Switchers, Cab units, Hood units), Fairbanks-Morse, General Electric, Whitcomb
Electric Switchers, Passenger, Freight

----
References

Steam locomotives

Milwaukee Road steam locomotives were organized into classes
Class (locomotive)
Class refers to a group of locomotives built to a common design for a single railroad. Often members of a particular class had detail variations between individual examples, and these could lead to subclasses. Sometimes technical alterations move a locomotive from one class to another...

 by wheel arrangement.

Additional suffixes, where used indicated:
  • s: fitted with superheater
    Superheater
    A superheater is a device used to convert saturated steam or wet steam into dry steam used for power generation or processes. There are three types of superheaters namely: radiant, convection, and separately fired...

     (where the class was not fitted from new)
  • r: fitted with a mechanical stoker (where the class was not fitted from new)

Class A: 4-4-2

Class A was the 4-4-2
4-4-2 (locomotive)
Under the Whyte notation for the classification of steam locomotives, 4-4-2 represents the wheel arrangement of four leading wheels on two axles , four powered and coupled driving wheels on two axles, and two trailing wheels on one axle...

 type.
Class Quantity Builder Built Retired Cylinders
(bore × stroke)
Driver
Driving wheel
On a steam locomotive, a driving wheel is a powered wheel which is driven by the locomotive's pistons...


diameter
Boiler pressure Tractive effort
Tractive effort
As used in mechanical engineering, the term tractive force is the pulling or pushing force exerted by a vehicle on another vehicle or object. The term tractive effort is synonymous with tractive force, and is often used in railway engineering to describe the pulling or pushing capability of a...

Notes
in
Inch
An inch is the name of a unit of length in a number of different systems, including Imperial units, and United States customary units. There are 36 inches in a yard and 12 inches in a foot...

mm
Millimetre
The millimetre is a unit of length in the metric system, equal to one thousandth of a metre, which is the SI base unit of length....

in m
Metre
The metre , symbol m, is the base unit of length in the International System of Units . Originally intended to be one ten-millionth of the distance from the Earth's equator to the North Pole , its definition has been periodically refined to reflect growing knowledge of metrology...

psi
Pounds per square inch
The pound per square inch or, more accurately, pound-force per square inch is a unit of pressure or of stress based on avoirdupois units...

MPa
Pascal (unit)
The pascal is the SI derived unit of pressure, internal pressure, stress, Young's modulus and tensile strength, named after the French mathematician, physicist, inventor, writer, and philosopher Blaise Pascal. It is a measure of force per unit area, defined as one newton per square metre...

lbf
Pound-force
The pound force is a unit of force in some systems of measurement including English engineering units and British gravitational units.- Definitions :...

kN
A1
18
BLW
Baldwin Locomotive Works
The Baldwin Locomotive Works was an American builder of railroad locomotives. It was located in Philadelphia, Pennsylvania, originally, and later in nearby Eddystone, Pennsylvania. Although the company was very successful as a producer of steam locomotives, its transition to the production of...

1896–1903 1934–1948 13 × 26
22 × 26
330×660
559×660
781.981 2001.38 C:15,577
S:20,250
C:69.29
S:90.08
Vauclain compound
Vauclain compound
The Vauclain compound was a type of compound steam locomotive that was briefly popular around 1900. Developed at the Baldwin Locomotive Works, it featured two pistons moving in parallel, driving a common crosshead and controlled by a common valve gear using a single, complex piston...

, all rebuilt simple 1921–1922 as class A1-a. Eleven superheated 1925–1929 as class A1-as.
A1-as
11
Milwaukee Road 1925–1929 (rebuilt) 1934–1948 19 × 26 483×660 792.007 2001.38 2019789.84 Simple
A2
Milwaukee Road class A2
The Milwaukee Road's A2 class comprised 47 compound steam locomotives of the 4-4-2 or 'Atlantic' configuration. The Milwaukee Road acquired them in five batches....

9
BLW
Baldwin Locomotive Works
The Baldwin Locomotive Works was an American builder of railroad locomotives. It was located in Philadelphia, Pennsylvania, originally, and later in nearby Eddystone, Pennsylvania. Although the company was very successful as a producer of steam locomotives, its transition to the production of...

1901 1927–1929 15 × 28
25 × 28
381×711
635×711
842.134 2001.38 2042090.83 Vauclain compound
A2-a
Milwaukee Road class A2
The Milwaukee Road's A2 class comprised 47 compound steam locomotives of the 4-4-2 or 'Atlantic' configuration. The Milwaukee Road acquired them in five batches....

19
BLW
Baldwin Locomotive Works
The Baldwin Locomotive Works was an American builder of railroad locomotives. It was located in Philadelphia, Pennsylvania, originally, and later in nearby Eddystone, Pennsylvania. Although the company was very successful as a producer of steam locomotives, its transition to the production of...

1902–1903 1927–1929 15 × 28
25 × 28
381×711
635×711
842.134 2001.38 2042090.83 Vauclain compound
A2-b
Milwaukee Road class A2
The Milwaukee Road's A2 class comprised 47 compound steam locomotives of the 4-4-2 or 'Atlantic' configuration. The Milwaukee Road acquired them in five batches....

5
Milwaukee Road 1907–1908 1927–1929 15 × 28
25 × 28
381×711
635×711
852.159 2201.52 2219098.71 Compound
A2-c
Milwaukee Road class A2
The Milwaukee Road's A2 class comprised 47 compound steam locomotives of the 4-4-2 or 'Atlantic' configuration. The Milwaukee Road acquired them in five batches....

12
BLW
Baldwin Locomotive Works
The Baldwin Locomotive Works was an American builder of railroad locomotives. It was located in Philadelphia, Pennsylvania, originally, and later in nearby Eddystone, Pennsylvania. Although the company was very successful as a producer of steam locomotives, its transition to the production of...

1908–1909 1928–1930 15 × 28
25 × 28
381×711
635×711
852.159 2201.52 2219098.71 Vauclain compound
A2
Milwaukee Road class A2
The Milwaukee Road's A2 class comprised 47 compound steam locomotives of the 4-4-2 or 'Atlantic' configuration. The Milwaukee Road acquired them in five batches....

2
BLW
Baldwin Locomotive Works
The Baldwin Locomotive Works was an American builder of railroad locomotives. It was located in Philadelphia, Pennsylvania, originally, and later in nearby Eddystone, Pennsylvania. Although the company was very successful as a producer of steam locomotives, its transition to the production of...

31274, 31275
1907 1951 15 × 28
25 × 28
381×711
635×711
852.159 2201.52 2220098.75 Balanced compound, rebuilt simple as class A4-s
A4-s
2
Milwaukee Road (rebuilt) 1951 22 × 28 559×711 792.007 2001.38 29160129.71
A3-s
1
BLW
Baldwin Locomotive Works
The Baldwin Locomotive Works was an American builder of railroad locomotives. It was located in Philadelphia, Pennsylvania, originally, and later in nearby Eddystone, Pennsylvania. Although the company was very successful as a producer of steam locomotives, its transition to the production of...

33778
1909 1951 22 × 28 559×711 731.854     25240112.27 Acquired with Idaho and Washington Northern Railroad. Rebuilt as class A4-as
A4-as
1
Milwaukee Road (rebuilt) 1951 22 × 28 559×711 792.007 2001.38 29162129.72
A
Milwaukee Road class A
The Milwaukee Road class A comprised four high-speed, streamlined 4-4-2 "Atlantic" type steam locomotives built by ALCO in 1935-37 to haul the Milwaukee Road’s Hiawatha express passenger trains. They were among the last Atlantic types built in the United States, and certainly the largest and most...

4
Alco
American Locomotive Company
The American Locomotive Company, often shortened to ALCO or Alco , was a builder of railroad locomotives in the United States.-Early history:...

1935–1937 1949–1951 19 × 28 483×711 842.134 3002.07 30685136.49 Streamlined

Class B: 4-6-0

Class B was for Vauclain compound
Vauclain compound
The Vauclain compound was a type of compound steam locomotive that was briefly popular around 1900. Developed at the Baldwin Locomotive Works, it featured two pistons moving in parallel, driving a common crosshead and controlled by a common valve gear using a single, complex piston...

 4-6-0
4-6-0
Under the Whyte notation for the classification of steam locomotives, 4-6-0 represents the wheel arrangement of four leading wheels on two axles in a leading truck, six powered and coupled driving wheels on three axles, and no trailing wheels. This wheel arrangement became the second-most popular...

s built by Baldwin Locomotive Works
Baldwin Locomotive Works
The Baldwin Locomotive Works was an American builder of railroad locomotives. It was located in Philadelphia, Pennsylvania, originally, and later in nearby Eddystone, Pennsylvania. Although the company was very successful as a producer of steam locomotives, its transition to the production of...

. Most were rebuilt as simple engines, those not rebuilt were scrapped in the late 1920s.
Class Quantity Builder Built Retired Cylinders
(bore × stroke)
Driver
Driving wheel
On a steam locomotive, a driving wheel is a powered wheel which is driven by the locomotive's pistons...


diameter
Boiler pressure Tractive effort
Tractive effort
As used in mechanical engineering, the term tractive force is the pulling or pushing force exerted by a vehicle on another vehicle or object. The term tractive effort is synonymous with tractive force, and is often used in railway engineering to describe the pulling or pushing capability of a...

Notes
in
Inch
An inch is the name of a unit of length in a number of different systems, including Imperial units, and United States customary units. There are 36 inches in a yard and 12 inches in a foot...

mm
Millimetre
The millimetre is a unit of length in the metric system, equal to one thousandth of a metre, which is the SI base unit of length....

in m
Metre
The metre , symbol m, is the base unit of length in the International System of Units . Originally intended to be one ten-millionth of the distance from the Earth's equator to the North Pole , its definition has been periodically refined to reflect growing knowledge of metrology...

psi
Pounds per square inch
The pound per square inch or, more accurately, pound-force per square inch is a unit of pressure or of stress based on avoirdupois units...

MPa
Pascal (unit)
The pascal is the SI derived unit of pressure, internal pressure, stress, Young's modulus and tensile strength, named after the French mathematician, physicist, inventor, writer, and philosopher Blaise Pascal. It is a measure of force per unit area, defined as one newton per square metre...

lbf
Pound-force
The pound force is a unit of force in some systems of measurement including English engineering units and British gravitational units.- Definitions :...

kN
B
1
BLW
Baldwin Locomotive Works
The Baldwin Locomotive Works was an American builder of railroad locomotives. It was located in Philadelphia, Pennsylvania, originally, and later in nearby Eddystone, Pennsylvania. Although the company was very successful as a producer of steam locomotives, its transition to the production of...

1892 1914 12 × 26
20 × 26
305×660
508×660
621.575 1901.31 1560069.39 Rebuilt to class G5-xs
B1
14
BLW
Baldwin Locomotive Works
The Baldwin Locomotive Works was an American builder of railroad locomotives. It was located in Philadelphia, Pennsylvania, originally, and later in nearby Eddystone, Pennsylvania. Although the company was very successful as a producer of steam locomotives, its transition to the production of...

1895–1897 1913–1915 12½ × 26
21 × 26
318×660
533×660
621.575 2001.38 C:17,950
S:21,540
C:79.85
S:95.81
All rebuilt to class G5-s
B2
37
BLW
Baldwin Locomotive Works
The Baldwin Locomotive Works was an American builder of railroad locomotives. It was located in Philadelphia, Pennsylvania, originally, and later in nearby Eddystone, Pennsylvania. Although the company was very successful as a producer of steam locomotives, its transition to the production of...

1897–1899 1914–1925 13½× 26
23 × 26
343×660
584×660
621.575 2001.38 C:20,944
S:25,500
C:93.16
S:113.43
19 rebuilt to class G6-fs, 18 rebuilt to class G6-m
B2
7
BLW
Baldwin Locomotive Works
The Baldwin Locomotive Works was an American builder of railroad locomotives. It was located in Philadelphia, Pennsylvania, originally, and later in nearby Eddystone, Pennsylvania. Although the company was very successful as a producer of steam locomotives, its transition to the production of...

1900 1915–1924 13½× 26
23 × 26
343×660
584×660
621.575 2001.38 2125094.52 3 rebuilt to class G6-gs, 4 rebuilt to G6-n
B3-x
1
BLW
Baldwin Locomotive Works
The Baldwin Locomotive Works was an American builder of railroad locomotives. It was located in Philadelphia, Pennsylvania, originally, and later in nearby Eddystone, Pennsylvania. Although the company was very successful as a producer of steam locomotives, its transition to the production of...

1899 1927 14 × 30
24 × 30
256×762
610×762
681.727 2001.38 24200107.65 Scrapped
B3
25
BLW
Baldwin Locomotive Works
The Baldwin Locomotive Works was an American builder of railroad locomotives. It was located in Philadelphia, Pennsylvania, originally, and later in nearby Eddystone, Pennsylvania. Although the company was very successful as a producer of steam locomotives, its transition to the production of...

1900 1915–1927 15 × 26
25 × 26
381×660
635×660
681.727 2001.38 C:23,079
S:28,080
C:102.66
S:124.91
9 rebuilt to class G6-s, 4 rebuilt to class G6-os, 12 rebuilt to class G6-ps.
B4-x
1
BLW
Baldwin Locomotive Works
The Baldwin Locomotive Works was an American builder of railroad locomotives. It was located in Philadelphia, Pennsylvania, originally, and later in nearby Eddystone, Pennsylvania. Although the company was very successful as a producer of steam locomotives, its transition to the production of...

1899 1927 15 × 30
25 × 30
381×762
635×762
691.753 2001.38 26630118.46 Scrapped
B4
16
BLW
Baldwin Locomotive Works
The Baldwin Locomotive Works was an American builder of railroad locomotives. It was located in Philadelphia, Pennsylvania, originally, and later in nearby Eddystone, Pennsylvania. Although the company was very successful as a producer of steam locomotives, its transition to the production of...

1900 1921–1927 15 × 30
25 × 30
381×762
635×762
691.753 2001.38 C:26,630
S:31,956
C:118.46
S:142.15
Narrow firebox. 10 rebuilt to class G7-as, 6 scrapped
B4
66
BLW
Baldwin Locomotive Works
The Baldwin Locomotive Works was an American builder of railroad locomotives. It was located in Philadelphia, Pennsylvania, originally, and later in nearby Eddystone, Pennsylvania. Although the company was very successful as a producer of steam locomotives, its transition to the production of...

1901–1903 1915–1925 15 × 28
25 × 28
381×711
635×711
631.6 2001.38 C:27,222
S:32,666
C:121.09
S:145.31
Wide firebox. 20 rebuilt to class G7-bs, 4 rebuilt to class G7-cs, 25 rebuilt to class G8, 17 rebuilt to class G8-a,

Class C: 2-8-0

Class C was the 2-8-0
2-8-0
Under the Whyte notation for the classification of steam locomotives, 2-8-0 represents the wheel arrangement of two leading wheels on one axle , eight powered and coupled driving wheels on four axles, and no trailing wheels...

 type.
Class Quantity Builder Built Retired Cylinders
(bore × stroke)
Driver
Driving wheel
On a steam locomotive, a driving wheel is a powered wheel which is driven by the locomotive's pistons...


diameter
Boiler pressure Tractive effort
Tractive effort
As used in mechanical engineering, the term tractive force is the pulling or pushing force exerted by a vehicle on another vehicle or object. The term tractive effort is synonymous with tractive force, and is often used in railway engineering to describe the pulling or pushing capability of a...

Notes
in
Inch
An inch is the name of a unit of length in a number of different systems, including Imperial units, and United States customary units. There are 36 inches in a yard and 12 inches in a foot...

mm
Millimetre
The millimetre is a unit of length in the metric system, equal to one thousandth of a metre, which is the SI base unit of length....

in m
Metre
The metre , symbol m, is the base unit of length in the International System of Units . Originally intended to be one ten-millionth of the distance from the Earth's equator to the North Pole , its definition has been periodically refined to reflect growing knowledge of metrology...

psi
Pounds per square inch
The pound per square inch or, more accurately, pound-force per square inch is a unit of pressure or of stress based on avoirdupois units...

MPa
Pascal (unit)
The pascal is the SI derived unit of pressure, internal pressure, stress, Young's modulus and tensile strength, named after the French mathematician, physicist, inventor, writer, and philosopher Blaise Pascal. It is a measure of force per unit area, defined as one newton per square metre...

lbf
Pound-force
The pound force is a unit of force in some systems of measurement including English engineering units and British gravitational units.- Definitions :...

kN
C1-a
2
BLW
Baldwin Locomotive Works
The Baldwin Locomotive Works was an American builder of railroad locomotives. It was located in Philadelphia, Pennsylvania, originally, and later in nearby Eddystone, Pennsylvania. Although the company was very successful as a producer of steam locomotives, its transition to the production of...

19400–19401
1901 1934–1935 22 × 28 559×711 551.397 2001.38 41888186.33
C1-b
2
BLW
Baldwin Locomotive Works
The Baldwin Locomotive Works was an American builder of railroad locomotives. It was located in Philadelphia, Pennsylvania, originally, and later in nearby Eddystone, Pennsylvania. Although the company was very successful as a producer of steam locomotives, its transition to the production of...

19398–19399
1901 1934–1940 22 × 28 559×711 561.422 2001.38 41140183 Later class C1-c
C1-c
65
Milwaukee Road 1904–1907 1934–1949 22 × 28 559×711 551.397 2001.38 41890186.34
C1-d
10
Alco
American Locomotive Company
The American Locomotive Company, often shortened to ALCO or Alco , was a builder of railroad locomotives in the United States.-Early history:...

-Rogers
Rogers Locomotive and Machine Works
Rogers Locomotive and Machine Works was a 19th-century manufacturer of railroad steam locomotives based in Paterson, in Passaic County, New Jersey, in the United States. It built more than six thousand steam locomotives for railroads around the world. Most railroads in 19th-century United States...

1908–1909 1934–1936 22 × 28 559×711 571.448 1901.31 38391170.77 Acquired with Chicago, Terre Haute & Southeastern Railroad
C1-e
5
Alco
American Locomotive Company
The American Locomotive Company, often shortened to ALCO or Alco , was a builder of railroad locomotives in the United States.-Early history:...

-Brooks
Brooks Locomotive Works
The Brooks Locomotive Works manufactured steam railroad locomotives and freight cars from 1869 through its merger into the American Locomotive Company until 1934.-History:...

1905 1934–1936 19½ × 28 495×711 571.448 2001.38 31754141.25 Acquired with Chicago, Milwaukee & Gary Railroad; né Detroit Southern Railroad
C1-f
2
BLW
Baldwin Locomotive Works
The Baldwin Locomotive Works was an American builder of railroad locomotives. It was located in Philadelphia, Pennsylvania, originally, and later in nearby Eddystone, Pennsylvania. Although the company was very successful as a producer of steam locomotives, its transition to the production of...

32441–32442
1907 1934 21 × 28 533×711 551.397 2001.38 38166169.77 Acquired with Chicago, Milwaukee & Gary Railroad
C1-g
2
BLW
Baldwin Locomotive Works
The Baldwin Locomotive Works was an American builder of railroad locomotives. It was located in Philadelphia, Pennsylvania, originally, and later in nearby Eddystone, Pennsylvania. Although the company was very successful as a producer of steam locomotives, its transition to the production of...

35425–35426
1910 1934 21 × 28 533×711 551.397 2001.38 38166169.77 Acquired with Chicago, Milwaukee & Gary Railroad
C2
75
Milwaukee Road (25)
BLW
Baldwin Locomotive Works
The Baldwin Locomotive Works was an American builder of railroad locomotives. It was located in Philadelphia, Pennsylvania, originally, and later in nearby Eddystone, Pennsylvania. Although the company was very successful as a producer of steam locomotives, its transition to the production of...

(50)
1909–1910 1936–1965 23 × 30 584×762 631.6 2001.38 42820190.47
C3
2
BLW
Baldwin Locomotive Works
The Baldwin Locomotive Works was an American builder of railroad locomotives. It was located in Philadelphia, Pennsylvania, originally, and later in nearby Eddystone, Pennsylvania. Although the company was very successful as a producer of steam locomotives, its transition to the production of...

32176, 32208
1907 1935 22 × 28 559×711 511.295 2001.38 45170200.93 Acquired with Idaho and Washington Northern Railroad
C3-a
4
BLW
Baldwin Locomotive Works
The Baldwin Locomotive Works was an American builder of railroad locomotives. It was located in Philadelphia, Pennsylvania, originally, and later in nearby Eddystone, Pennsylvania. Although the company was very successful as a producer of steam locomotives, its transition to the production of...

1910–1911 1934–1951 22 × 30 559×762 551.397 2001.38 44880199.64 Acquired with Idaho and Washington Northern Railroad
C3-b
5
Alco
American Locomotive Company
The American Locomotive Company, often shortened to ALCO or Alco , was a builder of railroad locomotives in the United States.-Early history:...

-Rogers
Rogers Locomotive and Machine Works
Rogers Locomotive and Machine Works was a 19th-century manufacturer of railroad steam locomotives based in Paterson, in Passaic County, New Jersey, in the United States. It built more than six thousand steam locomotives for railroads around the world. Most railroads in 19th-century United States...

1909 1945–1949 22 × 30 559×762 571.448 2001.38 43300192.61
C4
1
BLW
Baldwin Locomotive Works
The Baldwin Locomotive Works was an American builder of railroad locomotives. It was located in Philadelphia, Pennsylvania, originally, and later in nearby Eddystone, Pennsylvania. Although the company was very successful as a producer of steam locomotives, its transition to the production of...

24742
1904 1927 20 × 24 508×610 491.245 Acquired with Montana Railroad
Montana Railroad
The Montana Railroad, now defunct, was an American railroad built and operated between the towns of Lombard and Lewistown, Montana, a distance of approximately 157 miles. The railroad connected with the national railway network via a connection with the Northern Pacific Railway at Lombard...

C5
5
Milwaukee Road 1912 1951–1954 24 × 30 610×762 631.6 1851.28 43130191.85
C5-a
45
Alco
American Locomotive Company
The American Locomotive Company, often shortened to ALCO or Alco , was a builder of railroad locomotives in the United States.-Early history:...

-Brooks
Brooks Locomotive Works
The Brooks Locomotive Works manufactured steam railroad locomotives and freight cars from 1869 through its merger into the American Locomotive Company until 1934.-History:...

(35)
Milwaukee Road (10)
1912–13 1945–1954 24 × 30 610×762 631.6 1851.28 43130191.85
C7
5
Alco
American Locomotive Company
The American Locomotive Company, often shortened to ALCO or Alco , was a builder of railroad locomotives in the United States.-Early history:...

-Schen
Schenectady Locomotive Works
The Schenectady Locomotive Works built railroad locomotives from its founding in 1848 through its merger into American Locomotive Company in 1901.After the 1901 merger, ALCO made the Schenectady plant its headquarters in Schenectady, New York....

1910 1950–1953 25 × 32 635×813 611.549 1801.24 50163223.14 Acquired with Chicago, Terre Haute & Southeastern Railroad
C7-a
12
Alco
American Locomotive Company
The American Locomotive Company, often shortened to ALCO or Alco , was a builder of railroad locomotives in the United States.-Early history:...

-Schen
Schenectady Locomotive Works
The Schenectady Locomotive Works built railroad locomotives from its founding in 1848 through its merger into American Locomotive Company in 1901.After the 1901 merger, ALCO made the Schenectady plant its headquarters in Schenectady, New York....

1912–1918 1950–1953 25 × 32 635×813 611.549 1801.24 50163223.14 Acquired with Chicago, Terre Haute & Southeastern Railroad
C9-a
1
Pittsburgh
Pittsburgh Locomotive and Car Works
The Pittsburgh Locomotive and Car Works was a railroad equipment manufacturing company founded by Andrew Carnegie and T.N. Miller in 1865. It was located in Allegheny, Pennsylvania.It repaired an early locomotive known as Bausman's Rhinoceros in April 1867....

1901 1921 19 × 24 483×610 501.27 Acquired with Tacoma Eastern Railroad
Tacoma Eastern Railroad
In its pre-incorporation phase, the Tacoma Eastern Railroad began life as a narrow-gauge logging road, about two miles long, running from a shallow-water wharf at the head of Commencement Bay in Tacoma, Washington. The railroad left the wharf fronting Dock Street and continued southward through a...

C9-b
1
BLW
Baldwin Locomotive Works
The Baldwin Locomotive Works was an American builder of railroad locomotives. It was located in Philadelphia, Pennsylvania, originally, and later in nearby Eddystone, Pennsylvania. Although the company was very successful as a producer of steam locomotives, its transition to the production of...

5943
1881 1929 20 × 24 508×610 501.27 1501.03 24480108.89 Acquired with Bellingham Bay and British Columbia Railroad
Bellingham Bay and British Columbia Railroad
Bellingham Bay and British Columbia Railroad was a railroad that was built in northwestern part of Washington State, between the town of Whatcom, now Bellingham, Washington, then to the town of Sumas, Washington to connect with the Canadian Pacific Railway for a continental connection.The company...

C9-c
1
BLW
Baldwin Locomotive Works
The Baldwin Locomotive Works was an American builder of railroad locomotives. It was located in Philadelphia, Pennsylvania, originally, and later in nearby Eddystone, Pennsylvania. Although the company was very successful as a producer of steam locomotives, its transition to the production of...

13800
1893 1929 19 × 24 483×610 501.27 1501.03 26511117.93 Acquired with Bellingham Bay and British Columbia Railroad
Bellingham Bay and British Columbia Railroad
Bellingham Bay and British Columbia Railroad was a railroad that was built in northwestern part of Washington State, between the town of Whatcom, now Bellingham, Washington, then to the town of Sumas, Washington to connect with the Canadian Pacific Railway for a continental connection.The company...

C9-d
1
BLW
Baldwin Locomotive Works
The Baldwin Locomotive Works was an American builder of railroad locomotives. It was located in Philadelphia, Pennsylvania, originally, and later in nearby Eddystone, Pennsylvania. Although the company was very successful as a producer of steam locomotives, its transition to the production of...

24742
1904 1927 20 × 24 508×610 541.372 Acquired with Bellingham Bay and British Columbia Railroad
Bellingham Bay and British Columbia Railroad
Bellingham Bay and British Columbia Railroad was a railroad that was built in northwestern part of Washington State, between the town of Whatcom, now Bellingham, Washington, then to the town of Sumas, Washington to connect with the Canadian Pacific Railway for a continental connection.The company...

C9-d
1
BLW
Baldwin Locomotive Works
The Baldwin Locomotive Works was an American builder of railroad locomotives. It was located in Philadelphia, Pennsylvania, originally, and later in nearby Eddystone, Pennsylvania. Although the company was very successful as a producer of steam locomotives, its transition to the production of...

13800
1906 1935 22 × 28 559×711 501.27 2001.38 46076204.96 Acquired with Tacoma Eastern Railroad
Tacoma Eastern Railroad
In its pre-incorporation phase, the Tacoma Eastern Railroad began life as a narrow-gauge logging road, about two miles long, running from a shallow-water wharf at the head of Commencement Bay in Tacoma, Washington. The railroad left the wharf fronting Dock Street and continued southward through a...


Class D: 0-8-0

Class D was the 0-8-0
0-8-0
Under the Whyte notation for the classification of steam locomotives, 0-8-0 represents the wheel arrangement of no leading wheels, eight powered and coupled driving wheels on four axles, and no trailing wheels...

 type.
Class Quantity Builder Built Retired Cylinders
(bore × stroke)
Driver
Driving wheel
On a steam locomotive, a driving wheel is a powered wheel which is driven by the locomotive's pistons...


diameter
Boiler pressure Tractive effort
Tractive effort
As used in mechanical engineering, the term tractive force is the pulling or pushing force exerted by a vehicle on another vehicle or object. The term tractive effort is synonymous with tractive force, and is often used in railway engineering to describe the pulling or pushing capability of a...

Notes
in
Inch
An inch is the name of a unit of length in a number of different systems, including Imperial units, and United States customary units. There are 36 inches in a yard and 12 inches in a foot...

mm
Millimetre
The millimetre is a unit of length in the metric system, equal to one thousandth of a metre, which is the SI base unit of length....

in m
Metre
The metre , symbol m, is the base unit of length in the International System of Units . Originally intended to be one ten-millionth of the distance from the Earth's equator to the North Pole , its definition has been periodically refined to reflect growing knowledge of metrology...

psi
Pounds per square inch
The pound per square inch or, more accurately, pound-force per square inch is a unit of pressure or of stress based on avoirdupois units...

MPa
Pascal (unit)
The pascal is the SI derived unit of pressure, internal pressure, stress, Young's modulus and tensile strength, named after the French mathematician, physicist, inventor, writer, and philosopher Blaise Pascal. It is a measure of force per unit area, defined as one newton per square metre...

lbf
Pound-force
The pound force is a unit of force in some systems of measurement including English engineering units and British gravitational units.- Definitions :...

kN
D1
2
BLW
Baldwin Locomotive Works
The Baldwin Locomotive Works was an American builder of railroad locomotives. It was located in Philadelphia, Pennsylvania, originally, and later in nearby Eddystone, Pennsylvania. Although the company was very successful as a producer of steam locomotives, its transition to the production of...

39758–39759
1913 1952 20 × 26 508×660 511.295 2001.38 34666154.2 Acquired with Chicago, Terre Haute & Southeastern Railroad

Class F: 4-6-2 and 4-6-4

Class F covered the 4-6-2
4-6-2
4-6-2, in the Whyte notation for the classification of steam locomotives, represents the wheel arrangement of four leading wheels on two axles , six powered and coupled driving wheels on three axles, and two trailing wheels on one axle .These locomotives are also known as Pacifics...

 and 4-6-4
4-6-4
Under the Whyte notation for the classification of steam locomotives, 4-6-4 represents the wheel arrangement of four leading wheels on two axles , six powered and coupled driving wheels on three axles, and four trailing wheels on two axles .Other equivalent classifications are:UIC classification:...

 types.
Class Quantity Builder Built Retired Cylinders
(bore × stroke)
Driver
Driving wheel
On a steam locomotive, a driving wheel is a powered wheel which is driven by the locomotive's pistons...


diameter
Boiler pressure Tractive effort
Tractive effort
As used in mechanical engineering, the term tractive force is the pulling or pushing force exerted by a vehicle on another vehicle or object. The term tractive effort is synonymous with tractive force, and is often used in railway engineering to describe the pulling or pushing capability of a...

Notes
in
Inch
An inch is the name of a unit of length in a number of different systems, including Imperial units, and United States customary units. There are 36 inches in a yard and 12 inches in a foot...

mm
Millimetre
The millimetre is a unit of length in the metric system, equal to one thousandth of a metre, which is the SI base unit of length....

in m
Metre
The metre , symbol m, is the base unit of length in the International System of Units . Originally intended to be one ten-millionth of the distance from the Earth's equator to the North Pole , its definition has been periodically refined to reflect growing knowledge of metrology...

psi
Pounds per square inch
The pound per square inch or, more accurately, pound-force per square inch is a unit of pressure or of stress based on avoirdupois units...

MPa
Pascal (unit)
The pascal is the SI derived unit of pressure, internal pressure, stress, Young's modulus and tensile strength, named after the French mathematician, physicist, inventor, writer, and philosopher Blaise Pascal. It is a measure of force per unit area, defined as one newton per square metre...

lbf
Pound-force
The pound force is a unit of force in some systems of measurement including English engineering units and British gravitational units.- Definitions :...

kN
F1 (1st) 4-6-2
4-6-2
4-6-2, in the Whyte notation for the classification of steam locomotives, represents the wheel arrangement of four leading wheels on two axles , six powered and coupled driving wheels on three axles, and two trailing wheels on one axle .These locomotives are also known as Pacifics...

1
Schenectady
Schenectady Locomotive Works
The Schenectady Locomotive Works built railroad locomotives from its founding in 1848 through its merger into American Locomotive Company in 1901.After the 1901 merger, ALCO made the Schenectady plant its headquarters in Schenectady, New York....

2855
1889 1926 19 × 24 483×610 681.727 1801.24 1949086.7 Rebuild to G4-g class 4-6-0
4-6-0
Under the Whyte notation for the classification of steam locomotives, 4-6-0 represents the wheel arrangement of four leading wheels on two axles in a leading truck, six powered and coupled driving wheels on three axles, and no trailing wheels. This wheel arrangement became the second-most popular...

F2 4-6-2
1
Milwaukee Road 1905 1929 23 × 26 584×660 721.829 2001.38 34470153.33
F3 4-6-2
70
Alco
American Locomotive Company
The American Locomotive Company, often shortened to ALCO or Alco , was a builder of railroad locomotives in the United States.-Early history:...

-Brooks
Brooks Locomotive Works
The Brooks Locomotive Works manufactured steam railroad locomotives and freight cars from 1869 through its merger into the American Locomotive Company until 1934.-History:...

47442–47491, 48714–47433
1910 1929–1954 23 × 28 584×711 792.007 2001.38 31870141.76 All rebuilt to F3-s, F3-as or F3-bs. Two streamlined as F1 (second). One streamlined as F3 (second)
F4 4-6-2
70
Milwaukee Road 1910 1916–1954 23 × 28 584×711 691.753 2001.38 36490162.32 All rebuilt to F4-b (2), F4-ms (17) or F5-bs (6).
F5 4-6-2
65 (+6)
Milwaukee Road (15 new, 6 rebuilt from F4)
Alco
American Locomotive Company
The American Locomotive Company, often shortened to ALCO or Alco , was a builder of railroad locomotives in the United States.-Early history:...

-Brooks
Brooks Locomotive Works
The Brooks Locomotive Works manufactured steam railroad locomotives and freight cars from 1869 through its merger into the American Locomotive Company until 1934.-History:...

(50) 51134–51163, 51328–51347
1911–1912 1934–1954 25 × 28 635×711 691.753 1851.28 39880177.4 All rebuilt to F5-b, F5-n or F3-an.
F6
Milwaukee Road class F6
The Milwaukee Road classes F6 comprised twenty-two steam locomotives of the 4-6-4 configuration, commonly nicknamed “Hudson” but known as “Baltic” on the Milwaukee Road...

 4-6-4
4-6-4
Under the Whyte notation for the classification of steam locomotives, 4-6-4 represents the wheel arrangement of four leading wheels on two axles , six powered and coupled driving wheels on three axles, and four trailing wheels on two axles .Other equivalent classifications are:UIC classification:...

14
BLW
Baldwin Locomotive Works
The Baldwin Locomotive Works was an American builder of railroad locomotives. It was located in Philadelphia, Pennsylvania, originally, and later in nearby Eddystone, Pennsylvania. Although the company was very successful as a producer of steam locomotives, its transition to the production of...

61135–61148
1930 1952–1954 26 × 28 660×711 802.032 2251.55 45250201.28
F6-a 4-6-4
8
BLW
Baldwin Locomotive Works
The Baldwin Locomotive Works was an American builder of railroad locomotives. It was located in Philadelphia, Pennsylvania, originally, and later in nearby Eddystone, Pennsylvania. Although the company was very successful as a producer of steam locomotives, its transition to the production of...

61655–61662
1931 1952–1954 26 × 28 660×711 802.032 2251.55 45250201.28
F7
Milwaukee Road class F7
The Milwaukee Road's class F7 comprised six high-speed, streamlined 4-6-4 "Baltic" or "Hudson" type steam locomotives built by ALCO in 1937–38 to haul the Milwaukee's Hiawatha express passenger trains...

 4-6-4
6
Alco
American Locomotive Company
The American Locomotive Company, often shortened to ALCO or Alco , was a builder of railroad locomotives in the United States.-Early history:...

69064–69069
1938 1949–1951 23½ × 30 597×762 842.134 3002.07 50194223.27 Streamlined

Class G: 4-6-0

Class G was the simple 4-6-0
4-6-0
Under the Whyte notation for the classification of steam locomotives, 4-6-0 represents the wheel arrangement of four leading wheels on two axles in a leading truck, six powered and coupled driving wheels on three axles, and no trailing wheels. This wheel arrangement became the second-most popular...

 type, some of which were rebuilt from class B compounds.
Class Quantity Builder Built Retired Cylinders
(bore × stroke)
Driver
Driving wheel
On a steam locomotive, a driving wheel is a powered wheel which is driven by the locomotive's pistons...


diameter
Boiler pressure Tractive effort
Tractive effort
As used in mechanical engineering, the term tractive force is the pulling or pushing force exerted by a vehicle on another vehicle or object. The term tractive effort is synonymous with tractive force, and is often used in railway engineering to describe the pulling or pushing capability of a...

Notes
in
Inch
An inch is the name of a unit of length in a number of different systems, including Imperial units, and United States customary units. There are 36 inches in a yard and 12 inches in a foot...

mm
Millimetre
The millimetre is a unit of length in the metric system, equal to one thousandth of a metre, which is the SI base unit of length....

in m
Metre
The metre , symbol m, is the base unit of length in the International System of Units . Originally intended to be one ten-millionth of the distance from the Earth's equator to the North Pole , its definition has been periodically refined to reflect growing knowledge of metrology...

psi
Pounds per square inch
The pound per square inch or, more accurately, pound-force per square inch is a unit of pressure or of stress based on avoirdupois units...

MPa
Pascal (unit)
The pascal is the SI derived unit of pressure, internal pressure, stress, Young's modulus and tensile strength, named after the French mathematician, physicist, inventor, writer, and philosopher Blaise Pascal. It is a measure of force per unit area, defined as one newton per square metre...

lbf
Pound-force
The pound force is a unit of force in some systems of measurement including English engineering units and British gravitational units.- Definitions :...

kN
G1
1
Cooke
Cooke Locomotive and Machine Works
The Cooke Locomotive and Machine Works, located in Paterson, New Jersey, manufactured steam railroad locomotives from 1852 until it was merged with seven other manufacturers to form American Locomotive Company in 1901...

1892 1902 17 × 24 432×610 561.422 1300.89631844809 2060091.63 Acquired with Milwaukee and Superior Railroad
G2
4
Brooks
Brooks Locomotive Works
The Brooks Locomotive Works manufactured steam railroad locomotives and freight cars from 1869 through its merger into the American Locomotive Company until 1934.-History:...

1333–1335, 1514
1888–1889 1925–1927 18 × 24 457×610 561.422 Acquired with Milwaukee and Northern Railroad
G2-a
2
Brooks
Brooks Locomotive Works
The Brooks Locomotive Works manufactured steam railroad locomotives and freight cars from 1869 through its merger into the American Locomotive Company until 1934.-History:...

1707–1708
1890 1926 18 × 24 457×610 571.448 Acquired with Milwaukee and Northern Superior Railroad
G2-b
1
PRR
Pennsylvania Railroad
The Pennsylvania Railroad was an American Class I railroad, founded in 1846. Commonly referred to as the "Pennsy", the PRR was headquartered in Philadelphia, Pennsylvania....

's Logansport, Indiana
Logansport, Indiana
Logansport is a city in and the county seat of Cass County, Indiana, United States. The population was 18,396 at the 2010 census. Logansport is located in northern Indiana, at the junction of the Wabash and Eel rivers, northeast of Lafayette.-History:...

 shops
1888 1926 19 × 22 483×559 501.27 Acquired with Tacoma Eastern Railroad
G2-c
1
BLW
Baldwin Locomotive Works
The Baldwin Locomotive Works was an American builder of railroad locomotives. It was located in Philadelphia, Pennsylvania, originally, and later in nearby Eddystone, Pennsylvania. Although the company was very successful as a producer of steam locomotives, its transition to the production of...

23673
1904 1931 18 × 24 457×610 631.6 2001.38 2098093.32 Acquired with Tacoma Eastern Railroad
G3
7
R.I.
Rhode Island Locomotive Works
Rhode Island Locomotive Works was a steam locomotive manufacturing company of the 19th century located in Providence, Rhode Island. The factory produced more than 3,400 locomotives between 1867 and 1906, when the plants locomotive production was shut down...

2548, 2635–2640
1891–1892 1926–1927 18 × 24 457×610 571.448 1601.1 1855082.51
G4
1
Schen
Schenectady Locomotive Works
The Schenectady Locomotive Works built railroad locomotives from its founding in 1848 through its merger into American Locomotive Company in 1901.After the 1901 merger, ALCO made the Schenectady plant its headquarters in Schenectady, New York....

1925 18 × 26 457×660 571.448 Acquired with Montana Railroad
G4-a
4
Brooks
Brooks Locomotive Works
The Brooks Locomotive Works manufactured steam railroad locomotives and freight cars from 1869 through its merger into the American Locomotive Company until 1934.-History:...

1219–1220, 1255–1256
1887 1926–1928 18 × 24 457×610 511.295 1501.03 1944086.47 Acquired with Milwaukee and Northern Railroad
G4-b
2
R.I.
Rhode Island Locomotive Works
Rhode Island Locomotive Works was a steam locomotive manufacturing company of the 19th century located in Providence, Rhode Island. The factory produced more than 3,400 locomotives between 1867 and 1906, when the plants locomotive production was shut down...

3128–3129
1896 1927–1929 18 × 24 457×610 571.448 1851.28 1913385.11 Acquired with Des Moines Northern and Western Railroad
G4-c
3
R.I.
Rhode Island Locomotive Works
Rhode Island Locomotive Works was a steam locomotive manufacturing company of the 19th century located in Providence, Rhode Island. The factory produced more than 3,400 locomotives between 1867 and 1906, when the plants locomotive production was shut down...

1047, 1052–1053
1881 1926 19 × 26 483×660 621.575
G4-d
20
R.I.
Rhode Island Locomotive Works
Rhode Island Locomotive Works was a steam locomotive manufacturing company of the 19th century located in Providence, Rhode Island. The factory produced more than 3,400 locomotives between 1867 and 1906, when the plants locomotive production was shut down...

1411–1430
1883 1926–1933 19 × 26 483×660 631.6 1501.03 1899584.49
G4-e
101
R.I.
Rhode Island Locomotive Works
Rhode Island Locomotive Works was a steam locomotive manufacturing company of the 19th century located in Providence, Rhode Island. The factory produced more than 3,400 locomotives between 1867 and 1906, when the plants locomotive production was shut down...

 (40); Schen
Schenectady Locomotive Works
The Schenectady Locomotive Works built railroad locomotives from its founding in 1848 through its merger into American Locomotive Company in 1901.After the 1901 merger, ALCO made the Schenectady plant its headquarters in Schenectady, New York....

 (35); Brooks
Brooks Locomotive Works
The Brooks Locomotive Works manufactured steam railroad locomotives and freight cars from 1869 through its merger into the American Locomotive Company until 1934.-History:...

 (1); Grant (25);
1885–1888 1926–1933 19 × 26 483×660 631.6 1501.03 1899584.49
G4-f
7
BLW
Baldwin Locomotive Works
The Baldwin Locomotive Works was an American builder of railroad locomotives. It was located in Philadelphia, Pennsylvania, originally, and later in nearby Eddystone, Pennsylvania. Although the company was very successful as a producer of steam locomotives, its transition to the production of...

15888–15891, 16017–16019
1898 18 × 24 457×610 511.295 1801.24 2087292.84 Acquired with Chicago, Terre Haute and Southeastern Railroad, né Southern Indiana
G4-g
1
MILW's Milwaukee
Milwaukee, Wisconsin
Milwaukee is the largest city in the U.S. state of Wisconsin, the 28th most populous city in the United States and 39th most populous region in the United States. It is the county seat of Milwaukee County and is located on the southwestern shore of Lake Michigan. According to 2010 census data, the...

 shops
1926 (rebuilt) 1930 19 × 24 483×610 681.727 1801.24 1949486.71 Rebuilt from F1 class 4-6-2
4-6-2
4-6-2, in the Whyte notation for the classification of steam locomotives, represents the wheel arrangement of four leading wheels on two axles , six powered and coupled driving wheels on three axles, and two trailing wheels on one axle .These locomotives are also known as Pacifics...

G5
27
R.I.
Rhode Island Locomotive Works
Rhode Island Locomotive Works was a steam locomotive manufacturing company of the 19th century located in Providence, Rhode Island. The factory produced more than 3,400 locomotives between 1867 and 1906, when the plants locomotive production was shut down...

1891 1925–1934 19 × 26 483×660 571.448 1501.03 2099593.39 Eight sold to Montana Railroad in 1907; re-acquired with Montana Railroad in 1910.
G5-a
19
Schen
Schenectady Locomotive Works
The Schenectady Locomotive Works built railroad locomotives from its founding in 1848 through its merger into American Locomotive Company in 1901.After the 1901 merger, ALCO made the Schenectady plant its headquarters in Schenectady, New York....

3302–3311 (10); BLW
Baldwin Locomotive Works
The Baldwin Locomotive Works was an American builder of railroad locomotives. It was located in Philadelphia, Pennsylvania, originally, and later in nearby Eddystone, Pennsylvania. Although the company was very successful as a producer of steam locomotives, its transition to the production of...

 (9)
1890–1892 1926–1935 18 × 26 452×660 631.6 1801.24 2046091.01
G5-b
1
R.I.
Rhode Island Locomotive Works
Rhode Island Locomotive Works was a steam locomotive manufacturing company of the 19th century located in Providence, Rhode Island. The factory produced more than 3,400 locomotives between 1867 and 1906, when the plants locomotive production was shut down...

2151
1889 1926 19 × 24 483×610 641.626
G5-s
15
Milwaukee Road (re-builder) 1913–1915 1938–1945 19 × 26 483×660 631.6 1801.24 22794101.39 Rebuilt from class B1
G5-c
1
BLW
Baldwin Locomotive Works
The Baldwin Locomotive Works was an American builder of railroad locomotives. It was located in Philadelphia, Pennsylvania, originally, and later in nearby Eddystone, Pennsylvania. Although the company was very successful as a producer of steam locomotives, its transition to the production of...

32348
1907 1927 19 × 26 483×660 561.422 Acquired with Bellingham Bay and British Columbia Railroad
G5-d
3
Rogers
Rogers Locomotive and Machine Works
Rogers Locomotive and Machine Works was a 19th-century manufacturer of railroad steam locomotives based in Paterson, in Passaic County, New Jersey, in the United States. It built more than six thousand steam locomotives for railroads around the world. Most railroads in 19th-century United States...

5386–5388
1899 1930–1934 18 × 26 457×660 511.295 1901.31 26676118.66 Acquired with Chicago, Terre Haute and Southeastern Railroad; né Southern Indiana Railroad
G5-e
10
BLW
Baldwin Locomotive Works
The Baldwin Locomotive Works was an American builder of railroad locomotives. It was located in Philadelphia, Pennsylvania, originally, and later in nearby Eddystone, Pennsylvania. Although the company was very successful as a producer of steam locomotives, its transition to the production of...

1903 1934 19 × 26 483×660 531.346 1801.24 27095120.52 Acquired with Chicago, Terre Haute and Southeastern Railroad; né Southern Indiana Railroad
G6-a
28
Milwaukee Road's Milwaukee Shops
Milwaukee, Wisconsin
Milwaukee is the largest city in the U.S. state of Wisconsin, the 28th most populous city in the United States and 39th most populous region in the United States. It is the county seat of Milwaukee County and is located on the southwestern shore of Lake Michigan. According to 2010 census data, the...

1905 1931–1936 20½ × 26 521×660 731.854 2001.38 25445113.18 17 superheated as class G6-as
G6-b
5
Milwaukee Road's Milwaukee Shops
Milwaukee, Wisconsin
Milwaukee is the largest city in the U.S. state of Wisconsin, the 28th most populous city in the United States and 39th most populous region in the United States. It is the county seat of Milwaukee County and is located on the southwestern shore of Lake Michigan. According to 2010 census data, the...

1907 1945–1948 20½ × 26 521×660 731.854 2001.38 25445113.18 4 superheated as class G6-bs
G6-c
13
Alco
American Locomotive Company
The American Locomotive Company, often shortened to ALCO or Alco , was a builder of railroad locomotives in the United States.-Early history:...

-Brooks
Brooks Locomotive Works
The Brooks Locomotive Works manufactured steam railroad locomotives and freight cars from 1869 through its merger into the American Locomotive Company until 1934.-History:...

45789–45801
1909 1930–1948 20½ × 26 521×660 731.854 2001.38 25445113.18 11 superheated ad class G6-cs
G6-d
2
BLW
Baldwin Locomotive Works
The Baldwin Locomotive Works was an American builder of railroad locomotives. It was located in Philadelphia, Pennsylvania, originally, and later in nearby Eddystone, Pennsylvania. Although the company was very successful as a producer of steam locomotives, its transition to the production of...

31269–31270
1907 1935 18 × 26 457×660 561.422 2001.38 25570113.74 Acquired with Idaho and Washington Northern Railroad
G6-e
3
BLW
Baldwin Locomotive Works
The Baldwin Locomotive Works was an American builder of railroad locomotives. It was located in Philadelphia, Pennsylvania, originally, and later in nearby Eddystone, Pennsylvania. Although the company was very successful as a producer of steam locomotives, its transition to the production of...

31648, 32119, 32764
1907–1908 1935 19 × 26 483×660 631.6 2001.38 25327112.66 Acquired with Idaho and Washington Northern Railroad
G6-fs
18
Milwaukee Road (rebuilder) 1914–1918 (rebuilt) 1932–1954 20 × 26 508×660 631.6 1801.24 25260112.36 Rebuilt from class B2
G6-gs
3
Milwaukee Road (rebuilder) 1915 (rebuilt) 1945–1953 20 × 26 508×660 631.6 1801.24 25257112.35 Rebuilt from class B2
G6-h
1
Cooke
Cooke Locomotive and Machine Works
The Cooke Locomotive and Machine Works, located in Paterson, New Jersey, manufactured steam railroad locomotives from 1852 until it was merged with seven other manufacturers to form American Locomotive Company in 1901...

2252
1893 1930 21 × 26 533×660 631.6 1801.24 31326139.34 Acquired with Tacoma Eastern Railroad
Tacoma Eastern Railroad
In its pre-incorporation phase, the Tacoma Eastern Railroad began life as a narrow-gauge logging road, about two miles long, running from a shallow-water wharf at the head of Commencement Bay in Tacoma, Washington. The railroad left the wharf fronting Dock Street and continued southward through a...

G6-k
3
BLW
Baldwin Locomotive Works
The Baldwin Locomotive Works was an American builder of railroad locomotives. It was located in Philadelphia, Pennsylvania, originally, and later in nearby Eddystone, Pennsylvania. Although the company was very successful as a producer of steam locomotives, its transition to the production of...

23682, 26638, 28486
1904–1906 1926–1932 20 × 26 508×660 571.448 1901.31 29327130.45 Acquired with Tacoma Eastern Railroad
Tacoma Eastern Railroad
In its pre-incorporation phase, the Tacoma Eastern Railroad began life as a narrow-gauge logging road, about two miles long, running from a shallow-water wharf at the head of Commencement Bay in Tacoma, Washington. The railroad left the wharf fronting Dock Street and continued southward through a...

G6-m
18
Milwaukee Road (rebuilder) 1921–1928 (rebuilt) 1950–1954 19 × 26 483×660 631.6 1801.24 25327112.66 Rebuilt from class B2; all superheated as class G6-ms
G6-n
4
Milwaukee Road (rebuilder) 1921–24 (rebuilt) 1941–1952 19 × 26 483×660 631.6 1801.24 25327112.66 Rebuilt from class B2; all superheated as class G6-ns
G6-os
4
Milwaukee Road (rebuilder) 1921 (rebuilt) 1949–1951 22 × 26 559×660 691.753 2001.38 31004137.91 Rebuilt from class B3
G6-ps
12
Milwaukee Road (rebuilder) 1921–1927 (rebuilt) 1947–1954 22 × 26 559×660 691.753 2001.38 31004137.91 Rebuilt from class B3; Two streamlined as class G 1937–1948
G6-s
10
Milwaukee Road (rebuilder) 1915–1918 (rebuilt) 1945–1951 22½ × 26 572×660 691.753 1801.24 29190129.84 Rebuilt from class B3
G6-r
4
Alco
American Locomotive Company
The American Locomotive Company, often shortened to ALCO or Alco , was a builder of railroad locomotives in the United States.-Early history:...

-Rogers
Rogers Locomotive and Machine Works
Rogers Locomotive and Machine Works was a 19th-century manufacturer of railroad steam locomotives based in Paterson, in Passaic County, New Jersey, in the United States. It built more than six thousand steam locomotives for railroads around the world. Most railroads in 19th-century United States...

37567–37572
1905 1934 19 × 26 483×660 571.448 1901.31 26554118.12 Acquired with Chicago, Terre Haute and Southeastern Railroaad, né Chicago Southern Railroad
G7
81
Milwaukee Road's Milwaukee Shops
Milwaukee, Wisconsin
Milwaukee is the largest city in the U.S. state of Wisconsin, the 28th most populous city in the United States and 39th most populous region in the United States. It is the county seat of Milwaukee County and is located on the southwestern shore of Lake Michigan. According to 2010 census data, the...

1904–1909 1928–1940 21 × 30 533×762 691.753 2001.38 32600145.01 Seven superheated as class G7-s
G7-as
10
Milwaukee Road (rebuilder) 1921 (rebuilt) 1940–1954 21 × 30 533×762 691.753 2001.38 32595144.99 Rebuilt from class B4
G7-bs
20
Milwaukee Road (rebuilder) 1915–1918 (rebuilt) 1950–1954 22 × 28 559×711 631.6 1801.24 32912146.4 Rebuilt from class B4
G7-cs
4
Milwaukee Road (rebuilder) 1918–1920 (rebuilt) 1948–1954 22 × 28 559×711 631.6 1801.24 32912146.4 Rebuilt from class B4
G8
25
Milwaukee Road (rebuilder) 1919–1920 (rebuilt) 1950–1957 22 × 28 559×711 631.6 2001.38 36568162.66 Rebuilt from class B4
G8-a
15
Milwaukee Road (rebuilder) 1921–1925 (rebuilt) 1948–1956 22 × 28 559×711 631.6 2001.38 36568162.66 Rebuilt from class B4

Class H: 4-4-0

Class H covered the 4-4-0
4-4-0
Under the Whyte notation for the classification of steam locomotives, 4-4-0 represents the wheel arrangement of four leading wheels on two axles , four powered and coupled driving wheels on two axles, and no trailing wheels...

 "American" type.
  • Milwaukee Road class H1
  • Milwaukee Road class H2
  • Milwaukee Road class H3
  • Milwaukee Road class H4
  • Milwaukee Road class H5
    Class Quantity Builder Built Retired Cylinders
    (bore × stroke)
    Driver
    Driving wheel
    On a steam locomotive, a driving wheel is a powered wheel which is driven by the locomotive's pistons...


    diameter
    Boiler pressure Tractive effort
    Tractive effort
    As used in mechanical engineering, the term tractive force is the pulling or pushing force exerted by a vehicle on another vehicle or object. The term tractive effort is synonymous with tractive force, and is often used in railway engineering to describe the pulling or pushing capability of a...

    Notes
    in
    Inch
    An inch is the name of a unit of length in a number of different systems, including Imperial units, and United States customary units. There are 36 inches in a yard and 12 inches in a foot...

    mm
    Millimetre
    The millimetre is a unit of length in the metric system, equal to one thousandth of a metre, which is the SI base unit of length....

    in m
    Metre
    The metre , symbol m, is the base unit of length in the International System of Units . Originally intended to be one ten-millionth of the distance from the Earth's equator to the North Pole , its definition has been periodically refined to reflect growing knowledge of metrology...

    psi
    Pounds per square inch
    The pound per square inch or, more accurately, pound-force per square inch is a unit of pressure or of stress based on avoirdupois units...

    MPa
    Pascal (unit)
    The pascal is the SI derived unit of pressure, internal pressure, stress, Young's modulus and tensile strength, named after the French mathematician, physicist, inventor, writer, and philosopher Blaise Pascal. It is a measure of force per unit area, defined as one newton per square metre...

    lbf
    Pound-force
    The pound force is a unit of force in some systems of measurement including English engineering units and British gravitational units.- Definitions :...

    kN
    H6
    2
    Brooks
    Brooks Locomotive Works
    The Brooks Locomotive Works manufactured steam railroad locomotives and freight cars from 1869 through its merger into the American Locomotive Company until 1934.-History:...

    1599–1600
    1890 1926–1927 17 × 24 432×610 621.575 Acquired 1893 with Milwaukee and Northern
    H6-b
    3
    Schen.
    Schenectady Locomotive Works
    The Schenectady Locomotive Works built railroad locomotives from its founding in 1848 through its merger into American Locomotive Company in 1901.After the 1901 merger, ALCO made the Schenectady plant its headquarters in Schenectady, New York....

    3556–3557
    R. I.
    Rhode Island Locomotive Works
    Rhode Island Locomotive Works was a steam locomotive manufacturing company of the 19th century located in Providence, Rhode Island. The factory produced more than 3,400 locomotives between 1867 and 1906, when the plants locomotive production was shut down...

    2797
    1891–1892 1926–1930 17 × 24 432×610 621.575 Acquired 1899 with Des Moines and North Western
    H6-c
    4
    Brooks
    Brooks Locomotive Works
    The Brooks Locomotive Works manufactured steam railroad locomotives and freight cars from 1869 through its merger into the American Locomotive Company until 1934.-History:...

    1432–1433, 1512–1513
    1888–1889 1926 17 × 24 432×610 621.575 Acquired 1893 with Milwaukee and Northern
    H6-d
    31
    R. I.
    Rhode Island Locomotive Works
    Rhode Island Locomotive Works was a steam locomotive manufacturing company of the 19th century located in Providence, Rhode Island. The factory produced more than 3,400 locomotives between 1867 and 1906, when the plants locomotive production was shut down...

    1687–1696
    Brooks
    Brooks Locomotive Works
    The Brooks Locomotive Works manufactured steam railroad locomotives and freight cars from 1869 through its merger into the American Locomotive Company until 1934.-History:...

    1148
    Cooke
    Cooke Locomotive and Machine Works
    The Cooke Locomotive and Machine Works, located in Paterson, New Jersey, manufactured steam railroad locomotives from 1852 until it was merged with seven other manufacturers to form American Locomotive Company in 1901...

    1754–1763
    Grant (10)
    1886–1887 1926–1947 18 × 24 457×610 681.727 1501.03 1450064.5
    H7
    18
    R. I.
    Rhode Island Locomotive Works
    Rhode Island Locomotive Works was a steam locomotive manufacturing company of the 19th century located in Providence, Rhode Island. The factory produced more than 3,400 locomotives between 1867 and 1906, when the plants locomotive production was shut down...

    1272–1293, 1304–1306
    1882–1883 1925–1932 18 × 24 457×610 631.6 1501.03 1570569.86
    H7-a
    3
    R. I.
    Rhode Island Locomotive Works
    Rhode Island Locomotive Works was a steam locomotive manufacturing company of the 19th century located in Providence, Rhode Island. The factory produced more than 3,400 locomotives between 1867 and 1906, when the plants locomotive production was shut down...

    1676–1678
    1886 1928–1930 18 × 24 457×610 631.6 1501.03 1574070.02 Acquired with Chicago, Evanston and Lake Shore Railroad
    H7-b
    10
    Schen.
    Schenectady Locomotive Works
    The Schenectady Locomotive Works built railroad locomotives from its founding in 1848 through its merger into American Locomotive Company in 1901.After the 1901 merger, ALCO made the Schenectady plant its headquarters in Schenectady, New York....

    2962–2971
    1889–1900 1927–1933 17 × 24 432×610 631.6 1801.24 1684074.91
    H7-c
    1
    BLW
    Baldwin Locomotive Works
    The Baldwin Locomotive Works was an American builder of railroad locomotives. It was located in Philadelphia, Pennsylvania, originally, and later in nearby Eddystone, Pennsylvania. Although the company was very successful as a producer of steam locomotives, its transition to the production of...

    18555
    1901 1928 17 × 24 432×610 681.727 Acquired from Davenport, Rock Island and Northwestern Railroad
    H7-d
    1
    BLW
    Baldwin Locomotive Works
    The Baldwin Locomotive Works was an American builder of railroad locomotives. It was located in Philadelphia, Pennsylvania, originally, and later in nearby Eddystone, Pennsylvania. Although the company was very successful as a producer of steam locomotives, its transition to the production of...

    18699
    1901 1928 17 × 24 432×610 681.727 Acquired from Davenport, Rock Island and Northwestern Railroad
    H8
    9
    Rogers
    Rogers Locomotive and Machine Works
    Rogers Locomotive and Machine Works was a 19th-century manufacturer of railroad steam locomotives based in Paterson, in Passaic County, New Jersey, in the United States. It built more than six thousand steam locomotives for railroads around the world. Most railroads in 19th-century United States...

    6228–6232
    Alco
    American Locomotive Company
    The American Locomotive Company, often shortened to ALCO or Alco , was a builder of railroad locomotives in the United States.-Early history:...

     (4)
    1904–1905 1934–1951 18 × 26 457×660 691.753 1801.24 1923685.57 Acquired with Chicago, Terre Haute and Southeastern Railroad

Class I: 0-6-0

Class I covered the 0-6-0
0-6-0
Under the Whyte notation for the classification of steam locomotives, 0-6-0 represents the wheel arrangement of no leading wheels, six powered and coupled driving wheels on three axles, and no trailing wheels...

 switcher
Switcher
A switcher or shunter is a small railroad locomotive intended not for moving trains over long distances but rather for assembling trains ready for a road locomotive to take over, disassembling a train that has been...

 types.
Class Quantity Builder Built Retired Cylinders
(bore × stroke)
Driver
Driving wheel
On a steam locomotive, a driving wheel is a powered wheel which is driven by the locomotive's pistons...


diameter
Boiler pressure Tractive effort
Tractive effort
As used in mechanical engineering, the term tractive force is the pulling or pushing force exerted by a vehicle on another vehicle or object. The term tractive effort is synonymous with tractive force, and is often used in railway engineering to describe the pulling or pushing capability of a...

Notes
in
Inch
An inch is the name of a unit of length in a number of different systems, including Imperial units, and United States customary units. There are 36 inches in a yard and 12 inches in a foot...

mm
Millimetre
The millimetre is a unit of length in the metric system, equal to one thousandth of a metre, which is the SI base unit of length....

in m
Metre
The metre , symbol m, is the base unit of length in the International System of Units . Originally intended to be one ten-millionth of the distance from the Earth's equator to the North Pole , its definition has been periodically refined to reflect growing knowledge of metrology...

psi
Pounds per square inch
The pound per square inch or, more accurately, pound-force per square inch is a unit of pressure or of stress based on avoirdupois units...

MPa
Pascal (unit)
The pascal is the SI derived unit of pressure, internal pressure, stress, Young's modulus and tensile strength, named after the French mathematician, physicist, inventor, writer, and philosopher Blaise Pascal. It is a measure of force per unit area, defined as one newton per square metre...

lbf
Pound-force
The pound force is a unit of force in some systems of measurement including English engineering units and British gravitational units.- Definitions :...

kN
I1
3
BLW
Baldwin Locomotive Works
The Baldwin Locomotive Works was an American builder of railroad locomotives. It was located in Philadelphia, Pennsylvania, originally, and later in nearby Eddystone, Pennsylvania. Although the company was very successful as a producer of steam locomotives, its transition to the production of...

2391, 4330, 4340
1871, 1878 1917 16 × 24 406×310 501.27
I2
2
Brooks
Brooks Locomotive Works
The Brooks Locomotive Works manufactured steam railroad locomotives and freight cars from 1869 through its merger into the American Locomotive Company until 1934.-History:...

1340, 1673
1888, 1890 1918 17 × 24 432×310 501.27 Acquired with Milwaukee and Northern
I3
9
Rhode Island
Rhode Island Locomotive Works
Rhode Island Locomotive Works was a steam locomotive manufacturing company of the 19th century located in Providence, Rhode Island. The factory produced more than 3,400 locomotives between 1867 and 1906, when the plants locomotive production was shut down...

2621, 2622, 2624, 2702–2707
1891 1926–1945 18 × 24 457×310 501.27 1601.1 2073692.24 Two rebuilt to 0-6-0ST as class I3-ax
I4
3
Milwaukee Shops 1891–1895 1926–1928 18 × 24 457×310 511.295 1801.24 23330103.78
I4-a
43
Milwaukee Shops (38)
BLW
Baldwin Locomotive Works
The Baldwin Locomotive Works was an American builder of railroad locomotives. It was located in Philadelphia, Pennsylvania, originally, and later in nearby Eddystone, Pennsylvania. Although the company was very successful as a producer of steam locomotives, its transition to the production of...

16206–16210 (5)
1898–1902 1909–1944 18 × 24 457×310 511.295 1801.24 23330103.78 One rebuilt to 0-6-0ST as class I-4ax
I5
6
Milwaukee Shops 1902–1903 1931–1934 19 × 26 483×660 511.295 1801.24 28160125.26
I5-a
166
Milwaukee Shops 1903–1913 1933–1955 19 × 26 483×660 511.295 1801.24 28158125.25 Two rebuilt to 0-6-0ST as class I-5ax
I5-b
2
BLW
Baldwin Locomotive Works
The Baldwin Locomotive Works was an American builder of railroad locomotives. It was located in Philadelphia, Pennsylvania, originally, and later in nearby Eddystone, Pennsylvania. Although the company was very successful as a producer of steam locomotives, its transition to the production of...

32423, 34354
1907, 1910 1934 19 × 26 483×660 511.295 1801.24 28158125.25 Acquired with Chicago, Milwaukee and Gary
I6-s
10
Milwaukee Shops 1913–1914 1948–1956 20 × 26 508×660 511.295 1801.24 31200138.78

Class J: 0-4-0

Class J covered 0-4-0
0-4-0
Under the Whyte notation for the classification of steam locomotives, 0-4-0 represents one of the simplest possible types, that with two axles and four coupled wheels, all of which are driven...

 switchers.
Class Quantity Builder Built Retired Cylinders
(bore × stroke)
Driver
Driving wheel
On a steam locomotive, a driving wheel is a powered wheel which is driven by the locomotive's pistons...


diameter
Boiler pressure Tractive effort
Tractive effort
As used in mechanical engineering, the term tractive force is the pulling or pushing force exerted by a vehicle on another vehicle or object. The term tractive effort is synonymous with tractive force, and is often used in railway engineering to describe the pulling or pushing capability of a...

Notes
in
Inch
An inch is the name of a unit of length in a number of different systems, including Imperial units, and United States customary units. There are 36 inches in a yard and 12 inches in a foot...

mm
Millimetre
The millimetre is a unit of length in the metric system, equal to one thousandth of a metre, which is the SI base unit of length....

in m
Metre
The metre , symbol m, is the base unit of length in the International System of Units . Originally intended to be one ten-millionth of the distance from the Earth's equator to the North Pole , its definition has been periodically refined to reflect growing knowledge of metrology...

psi
Pounds per square inch
The pound per square inch or, more accurately, pound-force per square inch is a unit of pressure or of stress based on avoirdupois units...

MPa
Pascal (unit)
The pascal is the SI derived unit of pressure, internal pressure, stress, Young's modulus and tensile strength, named after the French mathematician, physicist, inventor, writer, and philosopher Blaise Pascal. It is a measure of force per unit area, defined as one newton per square metre...

lbf
Pound-force
The pound force is a unit of force in some systems of measurement including English engineering units and British gravitational units.- Definitions :...

kN
J1
2
BLW
Baldwin Locomotive Works
The Baldwin Locomotive Works was an American builder of railroad locomotives. It was located in Philadelphia, Pennsylvania, originally, and later in nearby Eddystone, Pennsylvania. Although the company was very successful as a producer of steam locomotives, its transition to the production of...

3488–3489
1873 1905 14 × 22 356×559 491.245
J2
3
Brooks
Brooks Locomotive Works
The Brooks Locomotive Works manufactured steam railroad locomotives and freight cars from 1869 through its merger into the American Locomotive Company until 1934.-History:...

1883–1887 1911–1917 16 × 22 406×559 481.219 Acquired with Milwaukee and Northern
J2-a
80
various 1878–1882 1906–1930 16 × 22 406×559 501.27 1300.89631844809 1220054.27
J3
5
Grant
Grant Locomotive Works
Grant Locomotive Works was a manufacturer of steam railway locomotives from 1867 to 1895, first in Paterson, New Jersey and then in Chicago. The company built approximately 1,888 locomotives.-Predecessors:...

1893 1918–1926 16 × 22 406×559 511.295 1601.1 1502066.81

Class K: 2-6-2

Class K comprised 2-6-2
2-6-2
Under the Whyte notation for the classification of steam locomotives, 2-6-2 represents the wheel arrangement of two leading wheels, six coupled driving wheels and two trailing wheels.Other equivalent classifications are:...

 "Prairie" locomotives.
Class Quantity Builder Built Retired Cylinders
(bore × stroke)
Driver
Driving wheel
On a steam locomotive, a driving wheel is a powered wheel which is driven by the locomotive's pistons...


diameter
Boiler pressure Tractive effort
Tractive effort
As used in mechanical engineering, the term tractive force is the pulling or pushing force exerted by a vehicle on another vehicle or object. The term tractive effort is synonymous with tractive force, and is often used in railway engineering to describe the pulling or pushing capability of a...

Notes
in
Inch
An inch is the name of a unit of length in a number of different systems, including Imperial units, and United States customary units. There are 36 inches in a yard and 12 inches in a foot...

mm
Millimetre
The millimetre is a unit of length in the metric system, equal to one thousandth of a metre, which is the SI base unit of length....

in m
Metre
The metre , symbol m, is the base unit of length in the International System of Units . Originally intended to be one ten-millionth of the distance from the Earth's equator to the North Pole , its definition has been periodically refined to reflect growing knowledge of metrology...

psi
Pounds per square inch
The pound per square inch or, more accurately, pound-force per square inch is a unit of pressure or of stress based on avoirdupois units...

MPa
Pascal (unit)
The pascal is the SI derived unit of pressure, internal pressure, stress, Young's modulus and tensile strength, named after the French mathematician, physicist, inventor, writer, and philosopher Blaise Pascal. It is a measure of force per unit area, defined as one newton per square metre...

lbf
Pound-force
The pound force is a unit of force in some systems of measurement including English engineering units and British gravitational units.- Definitions :...

kN
K1
195
Alco
American Locomotive Company
The American Locomotive Company, often shortened to ALCO or Alco , was a builder of railroad locomotives in the United States.-Early history:...

(125)
Milwaukee Road (70)
1907–1909 1935–1945 21 × 28 533×711 631.6 2001.38 33320148.21 71 rebuilt to K1-as
K1-as
71
Alco
American Locomotive Company
The American Locomotive Company, often shortened to ALCO or Alco , was a builder of railroad locomotives in the United States.-Early history:...

(41)
Milwaukee Road (30)
1935–1955 21½ × 28 546×711 631.6 1851.28 32310143.72 rebuilt from K1
K1-a
1
BLW
Baldwin Locomotive Works
The Baldwin Locomotive Works was an American builder of railroad locomotives. It was located in Philadelphia, Pennsylvania, originally, and later in nearby Eddystone, Pennsylvania. Although the company was very successful as a producer of steam locomotives, its transition to the production of...

34918
1910 1927 17 × 24 432×610 441.118         Acquired with Puget Sound and Willapa Harbor Railroad. Sold to Cascade Timber Company

Class L: 2-8-2

Class L was for 2-8-2
2-8-2
Under the Whyte notation for the classification of steam locomotives, 2-8-2 represents the wheel arrangement of two leading wheels on one axle , eight powered and coupled driving wheels on four axles, and two trailing wheels on one axle...

 "Mikado" locomotives.
Class Quantity Builder Built Retired Cylinders
(bore × stroke)
Driver
Driving wheel
On a steam locomotive, a driving wheel is a powered wheel which is driven by the locomotive's pistons...


diameter
Boiler pressure Tractive effort
Tractive effort
As used in mechanical engineering, the term tractive force is the pulling or pushing force exerted by a vehicle on another vehicle or object. The term tractive effort is synonymous with tractive force, and is often used in railway engineering to describe the pulling or pushing capability of a...

Notes
in
Inch
An inch is the name of a unit of length in a number of different systems, including Imperial units, and United States customary units. There are 36 inches in a yard and 12 inches in a foot...

mm
Millimetre
The millimetre is a unit of length in the metric system, equal to one thousandth of a metre, which is the SI base unit of length....

in m
Metre
The metre , symbol m, is the base unit of length in the International System of Units . Originally intended to be one ten-millionth of the distance from the Earth's equator to the North Pole , its definition has been periodically refined to reflect growing knowledge of metrology...

psi
Pounds per square inch
The pound per square inch or, more accurately, pound-force per square inch is a unit of pressure or of stress based on avoirdupois units...

MPa
Pascal (unit)
The pascal is the SI derived unit of pressure, internal pressure, stress, Young's modulus and tensile strength, named after the French mathematician, physicist, inventor, writer, and philosopher Blaise Pascal. It is a measure of force per unit area, defined as one newton per square metre...

lbf
Pound-force
The pound force is a unit of force in some systems of measurement including English engineering units and British gravitational units.- Definitions :...

kN
L1
20
Milwaukee Road 1909 1945–1954 24 × 30 610×762 631.6 2001.38 46630207.42 2 locomotives superheated as L1-s
L1-s
2
Milwaukee Road 1940 26 × 30 660×762 631.6 1851.28 50620225.17
L2
Milwaukee Road class L2
The Milwaukee Road class L2 were 2-8-2 or ‘Mikado’ type steam locomotives build by or for the Chicago, Milwaukee, St. Paul and Pacific Railroad in the period 1912–1923.-Construction history:...

180
Milwaukee Road (40)
Alco
American Locomotive Company
The American Locomotive Company, often shortened to ALCO or Alco , was a builder of railroad locomotives in the United States.-Early history:...

(140)
1912–1914 1935–1955 26 × 30 660×762 631.6 2001.38 54723243.42 69 fitted with stokers as class L2-r
L2a
Milwaukee Road class L2
The Milwaukee Road class L2 were 2-8-2 or ‘Mikado’ type steam locomotives build by or for the Chicago, Milwaukee, St. Paul and Pacific Railroad in the period 1912–1923.-Construction history:...

100
BLW
Baldwin Locomotive Works
The Baldwin Locomotive Works was an American builder of railroad locomotives. It was located in Philadelphia, Pennsylvania, originally, and later in nearby Eddystone, Pennsylvania. Although the company was very successful as a producer of steam locomotives, its transition to the production of...

1920 1949–1954 26 × 30 660×762 631.6 2001.38 54723243.42
L2b
Milwaukee Road class L2
The Milwaukee Road class L2 were 2-8-2 or ‘Mikado’ type steam locomotives build by or for the Chicago, Milwaukee, St. Paul and Pacific Railroad in the period 1912–1923.-Construction history:...

100
BLW
Baldwin Locomotive Works
The Baldwin Locomotive Works was an American builder of railroad locomotives. It was located in Philadelphia, Pennsylvania, originally, and later in nearby Eddystone, Pennsylvania. Although the company was very successful as a producer of steam locomotives, its transition to the production of...

1922–1923 1950–1956 26 × 30 660×762 631.6 2001.38 54723243.42
L3
100
Alco
American Locomotive Company
The American Locomotive Company, often shortened to ALCO or Alco , was a builder of railroad locomotives in the United States.-Early history:...

59740–59789, 61042–61046, 61148–61192
1918–1919 1938–1956 27 × 32 686×813 631.6 2001.38 62949280.01 USRA Heavy Mikado
USRA Heavy Mikado
The USRA Heavy Mikado was a USRA standard class of steam locomotive designed under the control of the United States Railroad Administration, the nationalized railroad system in the United States during World War I. These locomotives were of 2-8-2 wheel arrangement in the Whyte notation, or 1′D1′...

. 18 fitted with booster as class L3-a. One fitted with tender booster as class L3-b

Class M: 2-6-0

Class M was for the 2-6-0
2-6-0
Under the Whyte notation for the classification of steam locomotives, 2-6-0 represents the wheel arrangement of two leading wheels on one axle, usually in a leading truck, six powered and coupled driving wheels on three axles, and no trailing wheels. This arrangement is commonly called a Mogul...

 type.
Class Quantity Builder Built Retired Cylinders
(bore × stroke)
Driver
Driving wheel
On a steam locomotive, a driving wheel is a powered wheel which is driven by the locomotive's pistons...


diameter
Boiler pressure Tractive effort
Tractive effort
As used in mechanical engineering, the term tractive force is the pulling or pushing force exerted by a vehicle on another vehicle or object. The term tractive effort is synonymous with tractive force, and is often used in railway engineering to describe the pulling or pushing capability of a...

Notes
in
Inch
An inch is the name of a unit of length in a number of different systems, including Imperial units, and United States customary units. There are 36 inches in a yard and 12 inches in a foot...

mm
Millimetre
The millimetre is a unit of length in the metric system, equal to one thousandth of a metre, which is the SI base unit of length....

in m
Metre
The metre , symbol m, is the base unit of length in the International System of Units . Originally intended to be one ten-millionth of the distance from the Earth's equator to the North Pole , its definition has been periodically refined to reflect growing knowledge of metrology...

psi
Pounds per square inch
The pound per square inch or, more accurately, pound-force per square inch is a unit of pressure or of stress based on avoirdupois units...

MPa
Pascal (unit)
The pascal is the SI derived unit of pressure, internal pressure, stress, Young's modulus and tensile strength, named after the French mathematician, physicist, inventor, writer, and philosopher Blaise Pascal. It is a measure of force per unit area, defined as one newton per square metre...

lbf
Pound-force
The pound force is a unit of force in some systems of measurement including English engineering units and British gravitational units.- Definitions :...

kN
M1
2
BLW
Baldwin Locomotive Works
The Baldwin Locomotive Works was an American builder of railroad locomotives. It was located in Philadelphia, Pennsylvania, originally, and later in nearby Eddystone, Pennsylvania. Although the company was very successful as a producer of steam locomotives, its transition to the production of...

1905 1925, 1927 18 × 24 457×610 631.6 1901.31 1993088.65 Acquired with Montana Railroad
M1a
1
BLW
Baldwin Locomotive Works
The Baldwin Locomotive Works was an American builder of railroad locomotives. It was located in Philadelphia, Pennsylvania, originally, and later in nearby Eddystone, Pennsylvania. Although the company was very successful as a producer of steam locomotives, its transition to the production of...

1891 1928 17 × 24 432×610 541.372         Acquired with Bellingham Bay and British Columbia Railroad
M1b
3
BLW
Baldwin Locomotive Works
The Baldwin Locomotive Works was an American builder of railroad locomotives. It was located in Philadelphia, Pennsylvania, originally, and later in nearby Eddystone, Pennsylvania. Although the company was very successful as a producer of steam locomotives, its transition to the production of...

1892 1930 20 × 24 508×610 511.295 1400.96526602102 2240099.64 Acquired with Chicago, Terre Haute and Southeastern Railroad
M1c
2
BLW
Baldwin Locomotive Works
The Baldwin Locomotive Works was an American builder of railroad locomotives. It was located in Philadelphia, Pennsylvania, originally, and later in nearby Eddystone, Pennsylvania. Although the company was very successful as a producer of steam locomotives, its transition to the production of...

1901 1930 20 × 24 508×610 511.295 1601.1 25600113.87 Acquired with Chicago, Terre Haute and Southeastern Railroad,
originally Southern Indiana Railroad
M1d
11
Rogers
Rogers Locomotive and Machine Works
Rogers Locomotive and Machine Works was a 19th-century manufacturer of railroad steam locomotives based in Paterson, in Passaic County, New Jersey, in the United States. It built more than six thousand steam locomotives for railroads around the world. Most railroads in 19th-century United States...

1904, 1905 1910–1934 20 × 24 508×610 511.295 1601.1 25600113.87 Acquired with Chicago, Terre Haute and Southeastern Railroad,
originally Southern Indiana Railroad.
M1e
4
Alco
American Locomotive Company
The American Locomotive Company, often shortened to ALCO or Alco , was a builder of railroad locomotives in the United States.-Early history:...

1904, 1905 1934 19 × 26 483×660 571.448 2001.38 27996124.53 Acquired with Chicago, Milwaukee and Gary Railroad,
originally, Illinois, Iowa and Minnesota Railroad.
M2
4
Alco
American Locomotive Company
The American Locomotive Company, often shortened to ALCO or Alco , was a builder of railroad locomotives in the United States.-Early history:...

1905, 1906 1927–1934 20 × 28 508×711 631.6 2001.38 30222134.43 ex Chicago Junction.

Class N: 2-6-6-2

Class N consisted of articulated locomotives of 2-6-6-2
2-6-6-2
In Whyte notation, 2-6-6-2 refers to a railroad steam locomotive that has two leading wheels followed by six coupled driving wheels, a second set of six coupled driving wheels, and two trailing wheels...

 arrangement.
Class Quantity Builder Built Retired Cylinders
(bore × stroke)
Driver
Driving wheel
On a steam locomotive, a driving wheel is a powered wheel which is driven by the locomotive's pistons...


diameter
Boiler pressure Tractive effort
Tractive effort
As used in mechanical engineering, the term tractive force is the pulling or pushing force exerted by a vehicle on another vehicle or object. The term tractive effort is synonymous with tractive force, and is often used in railway engineering to describe the pulling or pushing capability of a...

Notes
in
Inch
An inch is the name of a unit of length in a number of different systems, including Imperial units, and United States customary units. There are 36 inches in a yard and 12 inches in a foot...

mm
Millimetre
The millimetre is a unit of length in the metric system, equal to one thousandth of a metre, which is the SI base unit of length....

in m
Metre
The metre , symbol m, is the base unit of length in the International System of Units . Originally intended to be one ten-millionth of the distance from the Earth's equator to the North Pole , its definition has been periodically refined to reflect growing knowledge of metrology...

psi
Pounds per square inch
The pound per square inch or, more accurately, pound-force per square inch is a unit of pressure or of stress based on avoirdupois units...

MPa
Pascal (unit)
The pascal is the SI derived unit of pressure, internal pressure, stress, Young's modulus and tensile strength, named after the French mathematician, physicist, inventor, writer, and philosopher Blaise Pascal. It is a measure of force per unit area, defined as one newton per square metre...

lbf
Pound-force
The pound force is a unit of force in some systems of measurement including English engineering units and British gravitational units.- Definitions :...

kN
N1
25
Alco-S
American Locomotive Company
The American Locomotive Company, often shortened to ALCO or Alco , was a builder of railroad locomotives in the United States.-Early history:...

 48838–48862
1910–1911 1928–1935 23½ × 30
37 × 30
597×762
940×762
571.448 2001.38 70396313.1 Compound Mallet
Mallet locomotive
The Mallet Locomotive is a type of articulated locomotive, invented by a Swiss engineer named Anatole Mallet ....

. 17 rebuilt to class N3
N2
16
Alco-S
American Locomotive Company
The American Locomotive Company, often shortened to ALCO or Alco , was a builder of railroad locomotives in the United States.-Early history:...

 51057–51066, 52124–52129
1912 1934–1949 23½ × 30
37 × 30
597×762
940×762
571.448 2001.38 70396313.1 Compound Mallet
Mallet locomotive
The Mallet Locomotive is a type of articulated locomotive, invented by a Swiss engineer named Anatole Mallet ....

N3
17
Milwaukee Road
Chicago, Milwaukee, St. Paul and Pacific Railroad
The Milwaukee Road, officially the Chicago, Milwaukee, St. Paul and Pacific Railroad , was a Class I railroad that operated in the Midwest and Northwest of the United States from 1847 until its merger into the Soo Line Railroad on January 1, 1986. The company went through several official names...

 (re-built)
1929–1931 1950–1954 21½ × 30 546×762 571.448 2001.38 87720390.2 Four cylinder simple articulated. Rebuilt from class N1

Class S: 4-8-4

Class S were 4-8-4
4-8-4
Under the Whyte notation classification of steam locomotives, 4-8-4 represents the wheel arrangement of four leading wheels on two axles , eight powered and coupled driving wheels on four axles, and four trailing wheels on two axles .Other equivalent classifications are:UIC classification: 2D2...

 "Northern" locomotives.
Class Quantity Builder Built Retired Cylinders
(bore × stroke)
Driver
Driving wheel
On a steam locomotive, a driving wheel is a powered wheel which is driven by the locomotive's pistons...


diameter
Boiler pressure Tractive effort
Tractive effort
As used in mechanical engineering, the term tractive force is the pulling or pushing force exerted by a vehicle on another vehicle or object. The term tractive effort is synonymous with tractive force, and is often used in railway engineering to describe the pulling or pushing capability of a...

Notes
in
Inch
An inch is the name of a unit of length in a number of different systems, including Imperial units, and United States customary units. There are 36 inches in a yard and 12 inches in a foot...

mm
Millimetre
The millimetre is a unit of length in the metric system, equal to one thousandth of a metre, which is the SI base unit of length....

in m
Metre
The metre , symbol m, is the base unit of length in the International System of Units . Originally intended to be one ten-millionth of the distance from the Earth's equator to the North Pole , its definition has been periodically refined to reflect growing knowledge of metrology...

psi
Pounds per square inch
The pound per square inch or, more accurately, pound-force per square inch is a unit of pressure or of stress based on avoirdupois units...

MPa
Pascal (unit)
The pascal is the SI derived unit of pressure, internal pressure, stress, Young's modulus and tensile strength, named after the French mathematician, physicist, inventor, writer, and philosopher Blaise Pascal. It is a measure of force per unit area, defined as one newton per square metre...

lbf
Pound-force
The pound force is a unit of force in some systems of measurement including English engineering units and British gravitational units.- Definitions :...

kN
S1
2
BLW
Baldwin Locomotive Works
The Baldwin Locomotive Works was an American builder of railroad locomotives. It was located in Philadelphia, Pennsylvania, originally, and later in nearby Eddystone, Pennsylvania. Although the company was very successful as a producer of steam locomotives, its transition to the production of...

 61176 (1),
Milwaukee Shops (1)
1930 (1),
1938 (1)
1954 28 × 30 711×762 741.88
}
|62136276.4
|
|-
!S2
|
40
|BLW
Baldwin Locomotive Works
The Baldwin Locomotive Works was an American builder of railroad locomotives. It was located in Philadelphia, Pennsylvania, originally, and later in nearby Eddystone, Pennsylvania. Although the company was very successful as a producer of steam locomotives, its transition to the production of...

 62089–62118, 62344–62353
|1937–1940
|1954–1956
|26 × 32
|660×813
|741.88
|2852
|70816315
|
|-
!S3
|
10
|Alco
American Locomotive Company
The American Locomotive Company, often shortened to ALCO or Alco , was a builder of railroad locomotives in the United States.-Early history:...

 71973–71982
|1944
|1954–1956
|26 × 32
|660×813
|741.88
|2501.72
|62116276.3
|Two preserved: (261
Milwaukee Road 261
The Milwaukee Road 261 is a 4-8-4, steam-powered locomotive owned and maintained by a Minnesota-based nonprofit organization known as the Friends of the 261, which runs seasonal train excursions...

) at NRM
National Railroad Museum
The National Railroad Museum is a railroad museum located in Ashwaubenon, Wisconsin, in suburban Green Bay.The museum is one of the oldest institutions in the United States dedicated to preserving and interpreting the nation's railroad history. It was founded in 1956 by community volunteers in...

, 265 at IRM
Illinois Railway Museum
The Illinois Railway Museum is the largest railroad museum in the United States and is located in Union, Illinois, northwest of Chicago...


|}

ALCO

Model Milwaukee class Quantity Built Retired Notes
ALCO HH600
ALCO HH series
The ALCO HH series were an early series of switcher diesel-electric locomotives built by the American Locomotive Company of Schenectady, New York between 1931 and 1940, when they were replaced by the S series; the S-1 and S-2...

6-AS
2
1939 1961
ALCO HH660
ALCO HH series
The ALCO HH series were an early series of switcher diesel-electric locomotives built by the American Locomotive Company of Schenectady, New York between 1931 and 1940, when they were replaced by the S series; the S-1 and S-2...

6.6-AS
2
1940 1961
ALCO HH1000
ALCO HH series
The ALCO HH series were an early series of switcher diesel-electric locomotives built by the American Locomotive Company of Schenectady, New York between 1931 and 1940, when they were replaced by the S series; the S-1 and S-2...

10-AS
2
1940
Alco S-2
ALCO S-2 and S-4
The ALCO S2 and S4 were switcher diesel locomotives produced by ALCO and Canadian licensee Montreal Locomotive Works . Basically, the two locomotives differed only in trucks, with the S-2 using ALCO's own Blunt trucks, and the S-4 riding on standard AAR type A switcher trucks. Both were powered...

10-AS
31
1940–50
Alco S-4
ALCO S-2 and S-4
The ALCO S2 and S4 were switcher diesel locomotives produced by ALCO and Canadian licensee Montreal Locomotive Works . Basically, the two locomotives differed only in trucks, with the S-2 using ALCO's own Blunt trucks, and the S-4 riding on standard AAR type A switcher trucks. Both were powered...

10-AS
34
1950–54
ALCO RS-1
ALCO RS-1
The ALCO RS-1 was a 4-axle diesel-electric locomotive built by Alco-GE between 1941 and 1953 and the American Locomotive Company from 1953 to 1960. This model has the distinction of having the longest production run of any diesel locomotive for the North American market.The carbody configuration of...

10-ARS
7
1941 (2); 1943 (2); 1953 (3) 1943 (2); 1967 (5) Two requisitioned by US Army in 1943.
ALCO RSC-2
ALCO RSC-2
The ALCO RSC-2 was a diesel-electric locomotive of the road switcher type that rode on three-axle trucks, having an A1A-A1A wheel arrangement....

15-ARS
22
1946–47 Four rebuilt by Alco to RSC-25 in 1965
ALCO RS-3
ALCO RS-3
The ALCO RS-3 is a 1,600 hp , B-B road switcher railroad locomotive. It was manufactured by American Locomotive Company and Montreal Locomotive Works from May 1950 to August 1956, and 1,418 were produced — 1,265 for American railroads, 98 for Canadian railroads, 48 for Brazilian and 7...

16-ARS
21
1953–55
ALCO RSD-5
ALCO RSD-5
The ALCO RSD-5 was a diesel-electric locomotive of the road switcher type rated at , that rode on a pair of three-axle trucks, having a C-C wheel arrangement....

16-ARS
6
1953 1976
ALCO DL-107
20-AP
2
1941

Baldwin

Model Milwaukee class Quantity Built Retired Notes
Baldwin VO-660
Baldwin VO-660
The Baldwin VO-660 was a diesel-electric locomotive switcher built by Baldwin Locomotive Works between April, 1939 and May, 1946. The 197,520–203,980 lb units were powered by a six-cylinder diesel engine rated at 660 horsepower , and rode on two-axle AAR Type-A switcher trucks in a B-B wheel...

6.6-BS
1
1940 1961
Baldwin VO-1000
Baldwin VO-1000
The Baldwin VO-1000 was a diesel-electric switcher locomotive built by Baldwin Locomotive Works between January, 1939 and December, 1946. The 236,260–242,200 lb units were powered by a normally aspirated eight-cylinder diesel engine rated at , and rode on a pair of two-axle trucks in a B-B...

10-BS
12
1940–45 1967–1976
Baldwin DS-4-4-1000
Baldwin DS-4-4-1000
The Baldwin DS-4-4-1000 were two models of four-axle diesel-electric switching locomotives built by the Baldwin Locomotive Works between 1946 and 1951. The first models was powered by an 8-cylinder normally aspirated prime mover, but from 1948, a change was made to the second model powered by a...

10-BS
10
1948–49
Baldwin S-12
Baldwin S-12
The Baldwin S-12 was a 1,200-horsepower diesel-electric locomotive intended for use in yard switching. The Baldwin Locomotive Works produced a total of 451 units between 1951 and 1956...

12-BS
21
1951–54 1969–1977
Baldwin RS-12
12-BRS
2
1951–52 1975–1976
Baldwin AS-616
Baldwin AS-616
The Baldwin AS-616 was a diesel-electric locomotive of the road switcher type rated at , that rode on three-axle trucks, having a C-C wheel arrangement.Nineteen railroads bought 214 locomotives, and two railroads bought seven cabless B units....

16-BRS-6
8
1951–53 Two were built as AS-616B models

Davenport

Model Milwaukee class Quantity Built Retired Notes
Davenport
Davenport Locomotive Works
The Davenport Locomotive Works, of Davenport, Iowa, USA built locomotives from 1902 until 1956. The company acquired the locomotive business of H. K...

 44-ton
 
2
1942 1958, 1967 380 hp

Switchers

Model Milwaukee class Quantity Built Retired Notes
EMD SW1
EMD SW1
The EMD SW1 was a diesel-electric switcher locomotive built by General Motors Electro-Motive Division between December 1938 and November 1953. Final assembly was at EMD's plant at La Grange, Illinois. The SW1 was the second generation of 600 hp switcher from EMD, succeeding the SW and SC...

6-ES
25
1939–45 1975–1983
EMD NW2
EMD NW2
The EMD NW2 is a 1,000 hp , B-B switcher locomotive manufactured by General Motors Electro-Motive Division of La Grange, Illinois. The NW2 was manufactured from February, 1939 to December, 1949, and 1145 were produced – 1121 for the U.S., and 24 were exported to Canada. Starting in late 1948...

10-ES
8
1939–1947 1981–1984
EMD TR2
 
2 units (1 A-B cow-calf
Cow-calf
In North American railroading, a cow-calf locomotive is a set of switcher-type diesel locomotives. The set usually is a pair; some 3-unit sets were built, but this was rare. A cow is equipped with a driving cab; a calf is not...

 set)
1949 1978–1979
EMD SW7
EMD SW7
The EMD SW7 was a diesel switcher locomotive built by General Motors Electro-Motive Division between October 1949 and January 1951. It was powered by a V12 567A engine developing . 489 SW7 locomotives were produced. The majority of the SW7s were built by EMD Plant #3 in Cleveland, Ohio...

10-ES
1
1950 1984
EMD TR4
 
12 units (6 A-B cow-calf sets)
1950–1951 1980–1984
EMD SW9
EMD SW9
An EMD SW9 is a diesel switcher locomotive built by General Motors Electro-Motive Division between December 1950 and December 1953. Power was provided by an EMD 567B 12-cylinder engine, producing ....

12-ES
3
1951 1982–1984
EMD SW1200
EMD SW1200
An EMD SW1200 is a diesel switcher locomotive built by General Motors Electro-Motive Division between January 1954 and May 1966. Power was provided by an EMD 567C 12-cylinder engine which generated 1200 horsepower...

12-ES
48
1954 1980–(end)
EMD MP15AC
EMD MP15AC
The EMD MP15AC is a 1,500 hp diesel switcher/road-switcher locomotive built by General Motors' Electro-Motive Division between August 1975 and August 1984. 246 examples were built, including 25 for export to Mexico, and four built in Canada...

15-ES
64
1975–76 (end) all to Soo Line Railroad
Soo Line Railroad
The Soo Line Railroad is the primary United States railroad subsidiary of the Canadian Pacific Railway , controlled through the Soo Line Corporation, and one of seven U.S. Class I railroads. Although it is named for the Minneapolis, St. Paul and Sault Ste...


Cab units

Model Milwaukee class Quantity Built Retired Notes
EMD E6
EMD E6
The EMD E6 was a , A1A-A1A, passenger train locomotive manufactured by Electro-Motive Corporation, and its corporate successor, General Motors Electro-Motive Division, of La Grange, Illinois. The cab version, or E6A, was manufactured from November, 1939 to September, 1942, and 91 were produced...

20-EP
2 A units
1941 1961
EMD E7
EMD E7
The EMD E7 was a , A1A-A1A passenger train locomotive manufactured by General Motors' Electro-Motive Division of La Grange, Illinois. The cab version, or E7A, was manufactured from February, 1945 to April, 1949, and 428 were produced. The booster version, or E7B, was manufactured from March, 1945...

20-EP
10 A units
1946 1969
EMD E9
EMD E9
The EMD E9 was a , A1A-A1A passenger train-hauling diesel locomotive built by General Motors' Electro-Motive Division of La Grange, Illinois between April 1954 and January 1964. 100 cab-equipped lead A units were produced, along with 44 cabless booster B units. All were for service within the...

24-EP
18 units (6 ABA sets)
1956 1973 Built to UP
Union Pacific Railroad
The Union Pacific Railroad , headquartered in Omaha, Nebraska, is the largest railroad network in the United States. James R. Young is president, CEO and Chairman....

 specification with steam generators for inter-city service.
EMD E9
EMD E9
The EMD E9 was a , A1A-A1A passenger train-hauling diesel locomotive built by General Motors' Electro-Motive Division of La Grange, Illinois between April 1954 and January 1964. 100 cab-equipped lead A units were produced, along with 44 cabless booster B units. All were for service within the...

24-EP
6 A unit
A unit
An A unit, in railroad terminology, is a locomotive equipped with a driving cab, or crew compartment, and the control system to control other locomotives in a multiple unit, and therefore able to be the lead unit in a consist of several locomotives controlled from a single position...

s
1961 1982 Built equipped with head end power
Head end power
Head end power or electric train supply is a rail transport term for the electrical power distribution system on a passenger train. The power source, usually a locomotive at the front or “head” of a train or a generator car, generates all the electricity used for lighting, electrical and other...

 for suburban service.
EMD FT
EMD FT
The EMD FT was a diesel-electric locomotive produced between November 1939, and November 1945, by General Motors' Electro-Motive Division . All told 555 cab-equipped A units were built, along with 541 cabless booster B units, for a grand total of 1,096 units. The locomotives were all sold to...

13.5-EF
52 units (26 A-B semi-permanently coupled pairs, making up 13 ABBA sets)
1941–45 1959
EMD F3
EMD F3
The EMD F3 was a , B-B freight- and passenger-hauling diesel locomotive produced between July 1945 and February 1949 by General Motors’ Electro-Motive Division. Final assembly was at GM-EMD's La Grange, Illinois plant...

15-EF
16 units (4 ABBA sets)
1949 1965
EMD F7
EMD F7
The EMD F7 was a Diesel-electric locomotive produced between February 1949 and December 1953 by the Electro-Motive Division of General Motors and General Motors Diesel . It succeeded the F3 model in GM-EMD's F-unit sequence, and was replaced in turn by the F9. Final assembly was at GM-EMD's La...

15-EF
118 units (68 A unit
A unit
An A unit, in railroad terminology, is a locomotive equipped with a driving cab, or crew compartment, and the control system to control other locomotives in a multiple unit, and therefore able to be the lead unit in a consist of several locomotives controlled from a single position...

s, 50 B unit
B unit
A "B" unit, in railroad terminology, is a locomotive unit which does not have a driving cab, or crew compartment, and must therefore be controlled from another, coupled locomotive with a driving cab . The term booster unit is also used. The concept was largely confined to North America...

s)
1949–1953 1974–1984
EMD FP7
EMD FP7
The EMD FP7 was a , B-B dual-service passenger and freight-hauling diesel locomotive produced between June 1949 and December 1953 by General Motors' Electro-Motive Division and General Motors Diesel. Final assembly was at GM-EMD's La Grange, Illinois plant, excepting locomotives destined for...

15-EP
32 (16 FP7-F7B-FP7 sets)
1950–1952 1976–1984 Five sets re-assigned to freight service
EMD F9
EMD F9
The EMD F9 was a Diesel-electric locomotive produced between February 1953 and May 1960 by the Electro-Motive Division of General Motors and General Motors Diesel . It succeeded the F7 model in GM-EMD's F-unit sequence. Final assembly was at GM-EMD's La Grange, Illinois plant. The F9 was also...

17.5-EF
12 units (6 AB sets)
1954 1977–1982 Four A unit
A unit
An A unit, in railroad terminology, is a locomotive equipped with a driving cab, or crew compartment, and the control system to control other locomotives in a multiple unit, and therefore able to be the lead unit in a consist of several locomotives controlled from a single position...

s re-equipped for suburban service

Cowl units

Model Milwaukee class Quantity Built Retired Notes
EMD FP45
EMD FP45
The EMD FP45 is a cowl unit type of C-C diesel locomotive produced in the United States by General Motors Electro-Motive Division. It was produced beginning in 1967 at the request of the Atchison, Topeka and Santa Fe Railway, which did not want its prestigious Super Chief and other passenger...

36-EP-6
5
1968 1982–1984 all five re-equipped for freight service
EMD F40C
EMD F40C
The EMD F40C is a 6-axle diesel locomotive built by General Motors Electro-Motive Division between March and May 1974 for commuter service. It is powered by a 16-cylinder EMD 645E3B, which can produce . It uses the same frame as the EMD SD40-2, giving it an overall length of...

15
1974 2005 Built for suburban service. Model unique to the Milwaukee Road

Hood units

Model Milwaukee class Quantity Built Retired Notes
EMD SD7
EMD SD7
An EMD SD7 is a 6-axle diesel locomotive built by General Motors Electro-Motive Division between February 1952 and November 1953. Power was provided by an EMD 567B 16-cylinder engine which generated ....

15-ERS-6
24
1952–53 17 rebuild to "SD10"
EMD GP9
EMD GP9
An EMD GP9 is a four-axle diesel locomotive built by General Motors' Electro-Motive Division in the United States, and General Motors Diesel in Canada between January, 1954, and August, 1963. US production ended in December, 1959, while an additional thirteen units were built in Canada, including...

17.5-ERS
128
1954–59
EMD SD9
EMD SD9
An EMD SD9 is a 6-axle diesel locomotive built by General Motors Electro-Motive Division between January 1954 and June 1959. Power was provided by an EMD 567C 16-cylinder engine which generated . This model is, externally, similar to its predecessor, the SD7. The principal spotting feature are the...

17.5-ERS-6
14
1954 Four rebuilt to "SD10"
EMD GP30
EMD GP30
The EMD GP30 was a 2,250 hp four-axle B-B diesel locomotive built by General Motors Electro-Motive Division of La Grange, Illinois between July, 1961 and November, 1963...

22.5-ERS
16
1963 1984
EMD GP35
EMD GP35
An EMD GP35 is a 4-axle diesel locomotive built by General Motors Electro-Motive Division between July 1963 and December 1965 and by General Motors Diesel between May 1964 and January 1966. Power was provided by an EMD 567D3A 16-cylinder engine which generated .Many railroads traded in Alco and...

25-ERS
12
1965 1984
EMD SDL39
EMD SDL39
An EMD SDL39 is a 6-axle diesel locomotive built by General Motors Electro-Motive Division between March 1969 and November 1972. Power was provided by an EMD 645E3 12-cylinder engine which generated 2300 horsepower . All 10 examples of this locomotive model were built for Milwaukee Road, who wanted...

23-ERS-6
10
1969–72 Model unique to the Milwaukee Road
EMD GP40
EMD GP40
The EMD GP40 is a 4-axle diesel-electric road switcher locomotive built by General Motors Electro-Motive Division between November 1965 and December 1971...

30-ERS-4
72
1966–69
EMD SD45
EMD SD45
The EMD SD45 is a six-axle diesel locomotive built by General Motors Electro-Motive Division between December, 1965, and December, 1971. Power was provided by an EMD 645E3 twenty-cylinder engine which generated 3,600 HP. This locomotive shared the same common frame with the EMD SD38, EMD SD39, EMD...

36-ERS-6
10
1968
EMD SD40-2
EMD SD40-2
The EMD SD40-2 is a C-C locomotive produced by EMD from 1972 to 1989.The SD40-2 was first introduced in January 1972 as the mid-range offering in EMD's six-axle "Dash-2" series, competing against the GE U30C and the MLW M630...

30-ERS-6
90
1972–74
EMD GP38-2
EMD GP38-2
An EMD GP38-2 is a four-axle diesel-electric locomotive of the road switcher type built by General Motors Electro-Motive Division. Part of the EMD Dash 2 line, the GP38-2 was an upgraded version of the earlier GP38...

20-ERS-2
16
1973–74

Fairbanks-Morse

Model Milwaukee class Quantity Built Retired Notes
FM H-10-44
FM H-10-44
The FM H-10-44 was a yard switcher produced by Fairbanks-Morse from August, 1944–March, 1950. The units featured a , six-cylinder opposed piston engine prime mover, and were configured in a B-B wheel arrangement mounted atop a pair of two-axle AAR Type-A switcher trucks, with all axles powered...

10-FS
24
1944–50 1978–1981
FM H-12-44
FM H-12-44
The FM H-12-44 was a yard switcher produced by Fairbanks-Morse from May, 1950–March, 1961. The units featured a , six-cylinder opposed piston engine prime mover, and were configured in a B-B wheel arrangement mounted atop a pair of two-axle AAR Type-A switcher trucks, with all axles powered and...

12-FS
48
1950–55 1975–1981
FM H-16-44
FM H-16-44
The FM H-16-44 was a road switcher produced by Fairbanks-Morse from April 1950 – February 1963. The locomotive shared an identical platform and carbody with the predecessor Model FM H-15-44 , and were equipped with the same eight-cylinder opposed piston engine that had been...

16-FRS
37
1954–56 1976–1979
FM H-16-66
FM H-16-66
-External links:* *...

16-FRS-6
6
1953 1976 Baby Trainmaster
FM CF-16-4
15-FF
18 (6 ABA sets)
1951 1960–68
FM Erie-built
FM Erie-built
The Erie-built was the first streamlined, cab-equipped dual service diesel locomotive built by Fairbanks-Morse, introduced as direct competition to such models as the ALCO PA and EMD E-unit...

20-FP
20 (14 A units, 6 B units: 6 ABA sets, 1 AA set)
1946–48 1959–1963

General Electric

Model Milwaukee class Quantity Built Retired Notes
GE 44-ton
3.6-GS
3
1940–1941 1966–1967
GE U23B
GE U23B
The GE U23B Diesel-electric locomotive was introduced by GE Transportation in 1968 as a medium horsepower roadswitcher, featuring a 12 cylinder FDL engine. It was one of the most successful models of the Universal Series, with railroads ordering it from 1968 until 1977 when it was replaced by the...

23-GRS
5
1973 1984–1985
GE U25B
GE U25B
The GE U25B was General Electric's first independent entry into the United States domestic diesel-electric railroad locomotive market for heavy production road locomotives since 1936...

25-GRS
12
1965 1966 (1), 1984 (11) One unit wrecked at Whitman, Minnesota in 1966
GE U28B
GE U28B
The GE U28B diesel locomotive model replaced the U25B in early 1966, featuring a slightly uprated prime mover . Early units had the same carbody styling as the U25B, while later units had design features more in common with later models...

28-GRS
12
1966 1984
GE U30B
GE U30B
General Electric's U30B was a further development of the U28B locomotive, with a 3000 horsepower 16-cylinder prime mover. It remained in production for over eight years. The U30B competed with the EMD GP40 and the ALCO Century 430, but was not as successful at the GE U30C.-External links:*...

30-GRS
10
1966–68 1980 (1), 1984 (9)
GE U30C
GE U30C
The GE U30C was one of the earliest successes from General Electric in the diesel locomotive market. With 600 units sold, the U30C proved to be a choice for customers who weren't able to purchase SD40's or SD40-2's from EMD due to mass orders...

30-GRS-6
8
1974 1985
GE U33C
GE U33C
The GE U33C is a 6-axle diesel locomotive built by GE Transportation Systems between 1968 and 1975. 375 examples of this locomotive were built for North American railroads.-Original Owners:-External links:* Thompson, J. David. ....

33-GRS-6
4
1968 1980 (1), 1982 (3)
GE U36C
GE U36C
The GE U36C was a 3600 hp diesel-electric locomotive model built by GE Transportation Systems.The length of the locomotive was 67'3", standard for U30C, U33C, U34CH, U36C, U36CG, C30-7 and C36-7. The U36C also had steel capped pistons....

36-GRS-6
4
1972 1984–1985

Whitcomb

Model Milwaukee class Quantity Built Retired Notes
Whitcomb 44-ton (B-B)
 
7
1940–1941 300 hp
Whitcomb 80-ton (1D1
AAR wheel arrangement
The AAR wheel arrangement system is a method of classifying locomotive wheel arrangements that was developed by the Association of American Railroads. It is essentially a simplification of the European UIC classification, and it is widely used in North America to describe diesel and electric...

)
 
2
1929, 1930 1944 300 hp; sold to US Government

Electric locomotives

The Milwaukee was one of the most electrified railroads in the United States. The system used was 3,000 volt DC
Direct current
Direct current is the unidirectional flow of electric charge. Direct current is produced by such sources as batteries, thermocouples, solar cells, and commutator-type electric machines of the dynamo type. Direct current may flow in a conductor such as a wire, but can also flow through...

 overhead line.

Switchers

  • Milwaukee Road class ES-1
    Milwaukee Road class ES-1
    The Milwaukee Road's class ES-1 comprised a single electric switcher locomotive built in 1915. It was designed to run on the unique 1,500 V DC electrification in the yard at Great Falls, Montana. It was originally numbered #10000 and was numbered E85 in March 1939. It was retired in November...

     1 example (built 1915), the Great Falls, Montana
    Great Falls, Montana
    Great Falls is a city in and the county seat of Cascade County, Montana, United States. The population was 58,505 at the 2010 census. It is the principal city of the Great Falls, Montana Metropolitan Statistical Area, which encompasses all of Cascade County...

     switcher. Used 1,500 volts DC.
  • Milwaukee Road class ES-2
    Milwaukee Road class ES-2
    The Milwaukee Road's class ES-2 comprised four electric switcher locomotives . Two were built in 1916 and the final two in 1919. They were of steeplecab design, with a single roof-mounted pantograph to access the Milwaukee's 3,000 V DC overhead line. Originally numbered 10050–10053, they...

     4 examples (built 1916–19).

Passenger

  • Milwaukee Road class EP-1 Twelve 2-unit boxcab sets (24 locomotives) built in 1915 by ALCO/GE
    Gê are the people who spoke Ge languages of the northern South American Caribbean coast and Brazil. In Brazil the Gê were found in Rio de Janeiro, Minas Gerais, Bahia, Piaui, Mato Grosso, Goias, Tocantins, Maranhão, and as far south as Paraguay....

    . Converted to freight class EF-1 in 1920. In 1950, 2 boxcab 2-unit sets were converted for passenger service (class EP-1A).
  • Milwaukee Road class EP-2
    Milwaukee Road class EP-2
    The Milwaukee Road's class EP-2 comprised five electric locomotives built by General Electric in 1919. They were often known as Bipolars, which referred to the bipolar electric motors they used. Among the most distinctive and powerful electric locomotives of their time, they epitomized the...

     The "Bi-Polars". 5 built by GE in 1919.
  • Milwaukee Road class EP-3
    Milwaukee Road class EP-3
    The Milwaukee Road's class EP-3 comprised ten electric locomotives built in 1919 by Baldwin and Westinghouse. They were nicknamed Quills because of their use of a quill drive...

     The "Quills" (quill drive
    Quill drive
    A quill drive is a mechanism that allows a drive shaft to shift its position relative to its driving shaft. It consists of a hollow driving shaft with a driven shaft inside it...

    ). 10 built by Baldwin
    Baldwin Locomotive Works
    The Baldwin Locomotive Works was an American builder of railroad locomotives. It was located in Philadelphia, Pennsylvania, originally, and later in nearby Eddystone, Pennsylvania. Although the company was very successful as a producer of steam locomotives, its transition to the production of...

    /Westinghouse
    Westinghouse Electric (1886)
    Westinghouse Electric was an American manufacturing company. It was founded in 1886 as Westinghouse Electric Company and later renamed Westinghouse Electric Corporation by George Westinghouse. The company purchased CBS in 1995 and became CBS Corporation in 1997...

     in 1919.
  • Milwaukee Road class EP-4
    Little Joe (electric locomotive)
    The Little Joe is a type of railroad electric locomotive built by General Electric for export to the Soviet Union in 1946. The locomotives had twelve axles, eight of them powered, in a 2-D+D-2 arrangement...

     "Little Joes". 2 examples built by GE in 1946. Converted to freight class EF-4 in 1956.

Freight

  • Milwaukee Road class EF-1 Thirty 2-unit boxcab sets (60 locomotives) built in 1915 by ALCO/GE
    Gê are the people who spoke Ge languages of the northern South American Caribbean coast and Brazil. In Brazil the Gê were found in Rio de Janeiro, Minas Gerais, Bahia, Piaui, Mato Grosso, Goias, Tocantins, Maranhão, and as far south as Paraguay....

    , identical to EP-1 but for gearing and paint. In addition, the EP-1 units were converted to EF-1 specification in 1920.
  • Milwaukee Road class EF-2 3-unit boxcab sets formed from EF-1s in the 1930s.
  • Milwaukee Road class EF-3 3-unit boxcab sets formed from EF-1s with the middle unit shortened by removing the cab and leading truck; the resultant B unit
    B unit
    A "B" unit, in railroad terminology, is a locomotive unit which does not have a driving cab, or crew compartment, and must therefore be controlled from another, coupled locomotive with a driving cab . The term booster unit is also used. The concept was largely confined to North America...

    s were known as "bobtails".
  • Milwaukee Road class EF-4
    Little Joe (electric locomotive)
    The Little Joe is a type of railroad electric locomotive built by General Electric for export to the Soviet Union in 1946. The locomotives had twelve axles, eight of them powered, in a 2-D+D-2 arrangement...

     "Little Joes". 10 examples built by GE in 1946. In addition the EP-4 locomotives were converted to EF-4 specification in 1956.
  • Milwaukee Road class EF-5 4-unit boxcab sets formed with any combination of regular or bobtail units in the middle.
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