Illinois Route 150 is an east–west state road in southern 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,...

. It runs from the Chester Bridge

Chester Bridge

The Chester Bridge is a truss bridge connecting Missouri's Route 51 with Illinois Route 150 across the Mississippi River between Perryville, Missouri and Chester, Illinois...

, a truss bridge

Truss bridge

A truss bridge is a bridge composed of connected elements which may be stressed from tension, compression, or sometimes both in response to dynamic loads. Truss bridges are one of the oldest types of modern bridges...

 over the Mississippi River

Mississippi River

The Mississippi River is the largest river system in North America. Flowing entirely in the United States, this river rises in western Minnesota and meanders slowly southwards for to the Mississippi River Delta at the Gulf of Mexico. With its many tributaries, the Mississippi's watershed drains...

 to Route 51 in the state of Missouri

Missouri

Missouri is a US state located in the Midwestern United States, bordered by Iowa, Illinois, Kentucky, Tennessee, Arkansas, Oklahoma, Kansas and Nebraska. With a 2010 population of 5,988,927, Missouri is the 18th most populous state in the nation and the fifth most populous in the Midwest. It...

, to Illinois Route 154

Illinois Route 154

Illinois Route 154 is an east–west state road in southern Illinois. It runs from Illinois Route 3 in Red Bud to Illinois Route 37 in Whittington. This is a distance of .- Route description :...

 in rural Perry County well west of Pinckneyville

Pinckneyville, Illinois

Pinckneyville is a city in Perry County, Illinois, United States. The population was 5,464 at the 2000 census. It is the county seat of Perry County...

. This is a distance of 24.57 miles (39.54 km).

Route description

Illinois 150 generally runs southwest to northeast, but is marked as an east–west route. From the Chester Bridge, it runs northeast through Chester

Chester, Illinois

Chester is a city located on the bluffs of the Mississippi River Valley in Randolph County, Illinois, United States. The population was 8,400 at the 2000 census. It is the county seat of Randolph County and is located south of St. Louis, Missouri.-History:...

, briefly overlapping

Concurrency (road)

A concurrency, overlap, or coincidence in a road network is an instance of one physical road bearing two or more different highway, motorway, or other route numbers...

 Illinois Route 3

Illinois Route 3

Illinois Route 3 is a major north–south arterial state highway in southwestern Illinois. It has its southern terminus at Cairo Junction at the intersection of Interstate 57 and U.S. Route 51, and its northern terminus in Grafton at Illinois Route 100...

. A longer concurrency takes place further northeast at Illinois Route 4

Illinois Route 4

Illinois Route 4 is a long state road that runs south from the Interstate 55 business loop around Springfield south to Illinois Route 13 just north of Murphysboro. This is a distance of .-Route description:...

. East of Percy

Percy, Illinois

Percy is a village in Randolph County, Illinois, United States. The population was 942 at the 2000 census.-Geography:Percy is located at .According to the United States Census Bureau, the village has a total area of , all of it land.-Demographics:...

, Illinois 150 turns north to Illinois 154. In Chester, it is named State Street.

History

SBI Route 150 originally ran from the U.S. 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...

/60

U.S. Route 60

U.S. Route 60 is an east–west United States highway, running from the Atlantic Ocean on the east coast in Virginia to western Arizona. Despite the final "0" in its number, indicating a transcontinental designation, the 1926 route formerly ended in Springfield, Missouri, at its intersection...

/62

U.S. Route 62

U.S. Route 62 runs from the US-Mexico border at El Paso, Texas to Niagara Falls, New York, near the United States-Canada border. It is the only east-west US Route that connects Mexico and Canada.Parts of U.S...

 bridges south of Cairo

Cairo, Illinois

Cairo is the southernmost city in the U.S. state of Illinois. It is the county seat of Alexander County. Cairo is located at the confluence of the Mississippi and Ohio rivers. The rivers converge at Fort Defiance State Park, an American Civil War fort that was commanded by General Ulysses S. Grant...

 north to Hamel

Hamel, Illinois

Hamel is a village in Madison County, Illinois, United States. The population was 570 at the 2000 census. It is a part of the Illinois Metro-East portion of the Greater St...

 (located northeast of Saint Louis, Missouri) on what is now Illinois Route 3

Illinois Route 3

Illinois Route 3 is a major north–south arterial state highway in southwestern Illinois. It has its southern terminus at Cairo Junction at the intersection of Interstate 57 and U.S. Route 51, and its northern terminus in Grafton at Illinois Route 100...

, the portion of Illinois 150 from Chester to Steeleville, and Illinois Route 4

Illinois Route 4

Illinois Route 4 is a long state road that runs south from the Interstate 55 business loop around Springfield south to Illinois Route 13 just north of Murphysboro. This is a distance of .-Route description:...

.

In 1937, the changes from Illinois 150 to Illinois 3 and 4 took place (the change to Illinois 4 initially was a change to Illinois Route 43

Illinois Route 43

Illinois Route 43 is a major north–south state road in the U.S. state of Illinois. It runs from U.S. Route 30 in Frankfort north to the large intersection of Illinois Route 120 and U.S...

). Illinois 150 then was extended east and west (replacing what was then Illinois Route 151

Illinois Route 151

Illinois Route 151 is a north–south state road in southern Illinois. It runs from Illinois Route 3 in rural Jackson County to Illinois Route 4 in Ava. This is a distance of .- Route description :...

) to its current length.