Interstate 90 in Illinois
Encyclopedia
In the U.S. state
U.S. state
A U.S. state is any one of the 50 federated states of the United States of America that share sovereignty with the federal government. Because of this shared sovereignty, an American is a citizen both of the federal entity and of his or her state of domicile. Four states use the official title of...

 of Illinois
Illinois
Illinois is the fifth-most populous state of the United States of America, and is often noted for being a microcosm of the entire country. With Chicago in the northeast, small industrial cities and great agricultural productivity in central and northern Illinois, and natural resources like coal,...

, Interstate 90
Interstate 90
Interstate 90 is the longest Interstate Highway in the United States at . It is the northernmost coast-to-coast interstate, and parallels US 20 for the most part. Its western terminus is in Seattle, at Edgar Martinez Drive S. near Safeco Field and CenturyLink Field, and its eastern terminus is in...

runs roughly northwest through the northern end of the state, from the Indiana border to Wisconsin. I-90 traverses a variety of settings, from farmland west of the Fox River Valley
Fox Valley (Illinois)
The Fox Valley—also commonly known as the Fox River Valley—is a rural, suburban, and exurban region within Illinois and Wisconsin along the western edges of the Chicago and Milwaukee metropolitan areas. This region centers on the Fox River of Illinois and Wisconsin...

 to medium-density suburban west of O'Hare International Airport
O'Hare International Airport
Chicago O'Hare International Airport , also known as O'Hare Airport, O'Hare Field, Chicago Airport, Chicago International Airport, or simply O'Hare, is a major airport located in the northwestern-most corner of Chicago, Illinois, United States, northwest of the Chicago Loop...

, to the heart of the industrial southeast side of Chicago
Chicago
Chicago is the largest city in the US state of Illinois. With nearly 2.7 million residents, it is the most populous city in the Midwestern United States and the third most populous in the US, after New York City and Los Angeles...

 before entering Indiana. This is a distance of 108.5 net miles (173.5 km).

Route description

Interstate 90 enters from Wisconsin with Interstate 39
Interstate 39
Interstate 39 is a highway in the midwestern United States. I-39 runs from Normal, Illinois at Interstate 55 to Highway 29 in Rothschild, Wisconsin, approximately six miles south of Wausau. I-39 was designed to replace US Highway 51, which in the early 1980s was one of the busiest two-lane...

. At the U.S. Route 51
U.S. Route 51
U.S. Route 51 is a north–south United States highway that runs for 1,286 miles from the western suburbs of New Orleans, Louisiana to within of the Wisconsin-Michigan border. Much of the highway in Illinois and southern Wisconsin runs parallel to or overlaps Interstate 39...

 exit, I-39/90 becomes the Jane Addams Memorial Tollway. The two Interstates run south to Rockford
Rockford, Illinois
Rockford is a mid-sized city located on both banks of the Rock River in far northern Illinois. Often referred to as "The Forest City", Rockford is the county seat of Winnebago County, Illinois, USA. As reported in the 2010 U.S. census, the city was home to 152,871 people, the third most populated...

, where I-39 continues south (as a freeway) to La Salle
La Salle, Illinois
LaSalle is a city in LaSalle County, Illinois, United States, located at the intersection of Interstates 39 and 80. It is part of the Ottawa–Streator Micropolitan Statistical Area. Originally platted in 1837 over one square mile, the city has grown to...

/Peru
Peru, Illinois
Peru is a city in LaSalle County, Illinois, United States. The population was 10,295 at the 2010 census. It is part of the Ottawa–Streator Micropolitan Statistical Area...

. I-90 continues southeast along the tollway through the Chicago area. In Schaumburg
Schaumburg, Illinois
Schaumburg is a city located in Cook County in northeastern Illinois. A common misspelling of the city name is Schaumberg, a spelling which persists on some modern maps. Schaumburg is located just under northwest of downtown Chicago and approximately northwest of O'Hare International Airport. As...

, I-90 meets the western end of Interstate 290
Interstate 290 (Illinois)
Interstate 290 is a main Interstate freeway that runs westwards from the Chicago Loop. A portion of I-290 is officially called the Dwight D. Eisenhower Expressway. In short form, it is known as "the Ike" or the Eisenhower...

, the only loop from I-90 in Illinois.

I-90 passes O'Hare International Airport
O'Hare International Airport
Chicago O'Hare International Airport , also known as O'Hare Airport, O'Hare Field, Chicago Airport, Chicago International Airport, or simply O'Hare, is a major airport located in the northwestern-most corner of Chicago, Illinois, United States, northwest of the Chicago Loop...

, where Interstate 190
Interstate 190 (Illinois)
Interstate 190 is an intrastate Interstate Highway in the U.S. state of Illinois. I-190 runs west from I-90 to O'Hare International Airport. This is a distance of . Interstate 190 is the westernmost leg of the Kennedy Expressway...

, the only spur of I-90 in Illinois, branches west to the airport terminals. I-90 continues southeast as the Kennedy Expressway
Kennedy Expressway
The John F. Kennedy Expressway is a long highway that travels northwest from the Chicago Loop to O'Hare International Airport. The expressway is named for the 35th U.S. President, John F. Kennedy. The Interstate 90 portion of the Kennedy is a part of the much longer I-90...

 (a freeway) and is later joined with eastbound Interstate 94
Interstate 94
Interstate 94 is the northernmost east–west Interstate Highway, connecting the Great Lakes and Intermountain regions of the United States. I-94's western terminus is in Billings, Montana at a junction with Interstate 90; its eastern terminus is the U.S...

 - westbound I-94 runs on the Edens Expressway
Edens Expressway
The Edens Expressway is the main major expressway north from the city of Chicago. For most of its length, the Edens carries Interstate 94; it also carries U.S. Route 41 from Wilmette to its northern terminus. Only the short portion from the Spur Ramp to the expressway's end in Highland Park does...

. I-90/94 then passes through the city, intersecting the eastern end of I-290 just west of the Chicago Loop
Chicago Loop
The Loop or Chicago Loop is one of 77 officially designated Chicago community areas located in the City of Chicago, Illinois. It is the historic commercial center of downtown Chicago...

. South of I-290, the highway is given the name of the Dan Ryan Expressway
Dan Ryan Expressway
The Dan Ryan is an expressway in the city of Chicago that runs from the Circle Interchange with I-290 near downtown Chicago through the South Side of the city. It is designated as both Interstate 94 and Interstate 90 south to 66th Street, a distance of...

.

In Chicago
Chicago
Chicago is the largest city in the US state of Illinois. With nearly 2.7 million residents, it is the most populous city in the Midwestern United States and the third most populous in the US, after New York City and Los Angeles...

's South Side, I-90 splits off from I-94 and becomes the Chicago Skyway
Chicago Skyway
The Chicago Skyway, also known as Chicago Skyway Toll Bridge System, is a toll road in Chicago, Illinois, United States, carrying Interstate 90 from the Indiana Toll Road to the Dan Ryan Expressway on Chicago's South Side leading into the Chicago Loop....

, again becoming a toll road. I-90 then runs directly southeast to the Indiana state line, and becomes the Indiana Toll Road
Indiana Toll Road
The Indiana Toll Road, officially the Indiana East–West Toll Road, is a toll road that runs for east–west across northern Indiana from the Illinois state line to the Ohio state line...

 at the state line.

Often confusing to non-residents is the direction system for I-90/94, in which signs that say "I-90/94 West" go north/northwest and signs that say "I-90/94 East" go south/southeast. This naming system is due to the overall direction of the expressway. I-90/94 West goes north, splits into I-94 and I-90, continues north to Wisconsin, and then goes west, I-90 going to Seattle. I-90/94 East goes south, splitting into two pieces, and then turns northeast, I-90 ending in Boston.

There is some dispute as to whether the Chicago Skyway
Chicago Skyway
The Chicago Skyway, also known as Chicago Skyway Toll Bridge System, is a toll road in Chicago, Illinois, United States, carrying Interstate 90 from the Indiana Toll Road to the Dan Ryan Expressway on Chicago's South Side leading into the Chicago Loop....

 is an official part of the Interstate Highway System
Interstate Highway System
The Dwight D. Eisenhower National System of Interstate and Defense Highways, , is a network of limited-access roads including freeways, highways, and expressways forming part of the National Highway System of the United States of America...

. The city of Chicago replaced many I-90 shields to "TO I-90" when it determined that the city may have never applied for Interstate designation for the skyway. However, the Federal Highway Administration considers the Skyway as being part of I-90, and the Illinois DOT has always and continues to report it as such. See List of gaps in Interstate Highways for more information.

Up until late 2007, the interstate was known as the "Northwest Tollway" between O'Hare Int'l
O'Hare International Airport
Chicago O'Hare International Airport , also known as O'Hare Airport, O'Hare Field, Chicago Airport, Chicago International Airport, or simply O'Hare, is a major airport located in the northwestern-most corner of Chicago, Illinois, United States, northwest of the Chicago Loop...

 to Rockford. Since late 2007, it is now known as the "Jane Addams Memorial Tollway", although many locals still refer to the road by its original name.

History

The 76 mile portion of Interstate 90 between O'Hare International airport and the Wisconsin state line opened on August 20, 1958. Prior to the opening, the first vehicle to officially travel the new roadway was a covered wagon
Covered wagon
The covered wagon, also known as a Prairie schooner, is an icon of the American Old West.Although covered wagons were commonly used for shorter moves within the United States, in the mid-nineteenth century thousands of Americans took them across the Great Plains to Oregon and California...

 navigated by local resident John Madsen who took 5 days to make the journey.

Lane configuration

Interstate 90 runs through downtown Chicago, resulting in some odd lane configurations when compared to downtown arteries like the Schuylkill Expressway
Schuylkill Expressway
The Schuylkill Expressway , locally known as the Schuylkill, is a freeway through southwestern Montgomery County and the city of Philadelphia, and the easternmost segment of Interstate 76 in the U.S. state of Pennsylvania...

 in Philadelphia:

From north to south:
  • Wisconsin
    Wisconsin
    Wisconsin is a U.S. state located in the north-central United States and is part of the Midwest. It is bordered by Minnesota to the west, Iowa to the southwest, Illinois to the south, Lake Michigan to the east, Michigan to the northeast, and Lake Superior to the north. Wisconsin's capital is...

     state line to Elgin
    Elgin, Illinois
    Elgin is a city in northern Illinois located roughly northwest of Chicago on the Fox River. Most of Elgin lies within Kane County, Illinois, with a portion in Cook County, Illinois...

     -- 4 lanes (2 lanes in each direction) parts now / soon to be 3 each way with all of being 3 each way in a few years.
  • Elgin to Tri-State Tollway
    Tri-State Tollway
    The Tri-State Tollway is a U.S. toll road maintained by the Illinois State Toll Highway Authority in northeastern Illinois which is considered one of the most heavily traveled highways in the country...

     (I-294) -- 6 lanes (3 lanes each way) - 3 + 2 C/D lanes each way around the I-290 / IL-53 Interchange and 3 to 4 lanes each way near the I-294 / I-190 Interchange
  • Tri-State Tollway to Edens Expressway
    Edens Expressway
    The Edens Expressway is the main major expressway north from the city of Chicago. For most of its length, the Edens carries Interstate 94; it also carries U.S. Route 41 from Wilmette to its northern terminus. Only the short portion from the Spur Ramp to the expressway's end in Highland Park does...

     (I-94) -- 6 lanes (3 lanes each way)
  • Edens Junction to Ohio Street -- 10 lanes (2 reversible, 4 westbound, 4 eastbound)
  • Ohio Street to Eisenhower Expressway (Interstate 290) -- 10 lanes (5 westbound, 5 eastbound)
  • At the Eisenhower Expressway -- 6 lanes (3 westbound, 3 eastbound)
  • From the Eisenhower Expressway to the Stevenson Expressway
    Stevenson Expressway
    The Stevenson Expressway is the major Interstate highway leading southwest out of the city of Chicago in Illinois. It is signed as Interstate 55 for the entire length....

     (Interstate 55
    Interstate 55
    Interstate 55 is an Interstate Highway in the central United States. Its odd number indicates that it is a north–south Interstate Highway. I-55 goes from LaPlace, Louisiana at Interstate 10 to Chicago at U.S. Route 41 , at McCormick Place. A common nickname for the highway is "double...

    ) -- 10 lanes (5 eastbound, 5 westbound)
  • From the Stevenson Expressway to the 47th Street Slip -- 14 lanes (express: 4 lanes each way, local: 3 lanes each way)
  • Between the 47th Street and 51st Street Slip Ramps -- 14 lanes (express: 3 lanes each way, local: 4 lanes each way)
  • 51st Street to the Chicago Skyway
    Chicago Skyway
    The Chicago Skyway, also known as Chicago Skyway Toll Bridge System, is a toll road in Chicago, Illinois, United States, carrying Interstate 90 from the Indiana Toll Road to the Dan Ryan Expressway on Chicago's South Side leading into the Chicago Loop....

     (Interstate 90) -- 14 (same configuration as north of 47th, although one eastbound express lane transitions into the Skyway slip).
  • Entire stretch of Chicago Skyway to Indiana -- 6 lanes (3 lanes each way)

Auxiliary routes

  • I-190
    Interstate 190 (Illinois)
    Interstate 190 is an intrastate Interstate Highway in the U.S. state of Illinois. I-190 runs west from I-90 to O'Hare International Airport. This is a distance of . Interstate 190 is the westernmost leg of the Kennedy Expressway...

     - a spur in to O'Hare International Airport
    O'Hare International Airport
    Chicago O'Hare International Airport , also known as O'Hare Airport, O'Hare Field, Chicago Airport, Chicago International Airport, or simply O'Hare, is a major airport located in the northwestern-most corner of Chicago, Illinois, United States, northwest of the Chicago Loop...

     in Chicago.
  • I-290
    Interstate 290 (Illinois)
    Interstate 290 is a main Interstate freeway that runs westwards from the Chicago Loop. A portion of I-290 is officially called the Dwight D. Eisenhower Expressway. In short form, it is known as "the Ike" or the Eisenhower...

     - a southwest dogleg left route accessing the west suburbs and heading east into downtown Chicago. Also known as the Eisenhower Expressway.


Exit list

County Location Mile #
Exit number
An exit number is a number assigned to a road junction, usually an exit from a freeway. It is usually marked on the same sign as the destinations of the exit, as well as a sign in the gore....

Destinations Notes
See Jane Addams Memorial Tollway
Cook
Cook County, Illinois
Cook County is a county in the U.S. state of Illinois, with its county seat in Chicago. It is the second most populous county in the United States after Los Angeles County. The county has 5,194,675 residents, which is 40.5 percent of all Illinois residents. Cook County's population is larger than...

Rosemont  – Milwaukee
78  – Indiana
Indiana
Indiana is a US state, admitted to the United States as the 19th on December 11, 1816. It is located in the Midwestern United States and Great Lakes Region. With 6,483,802 residents, the state is ranked 15th in population and 16th in population density. Indiana is ranked 38th in land area and is...

, O'Hare Airport
No exit number eastbound
Chicago See Kennedy Expressway
51H  – West Suburbs
51I Congress Parkway – Chicago Loop
Chicago Loop
The Loop or Chicago Loop is one of 77 officially designated Chicago community areas located in the City of Chicago, Illinois. It is the historic commercial center of downtown Chicago...

Signed as exit 51H westbound
See Dan Ryan Expressway
 – Indiana
Indiana
Indiana is a US state, admitted to the United States as the 19th on December 11, 1816. It is located in the Midwestern United States and Great Lakes Region. With 6,483,802 residents, the state is ranked 15th in population and 16th in population density. Indiana is ranked 38th in land area and is...

East end of I-94 overlap; eastbound exit and westbound entrance
See Chicago Skyway
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