 Interstate 55 | ||||
|---|---|---|---|---|
 I-55 highlighted in red | ||||
| Route information | ||||
| Maintained by IDOT | ||||
| Length | 294.38 mi[1] (473.76 km) | |||
| NHS | Entire route | |||
| Major junctions | ||||
| South end |    I-55 / I-64 / US 40 at East St. Louis | |||
| ||||
| North end |  US 41 in Chicago | |||
| Location | ||||
| Country | United States | |||
| State | Illinois | |||
| Counties | St. Clair, Madison, Macoupin, Montgomery, Sangamon, Logan, McLean, Livingston, Grundy, Will, DuPage, Cook | |||
| Highway system | ||||
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Interstate 55 (I-55) is a major north–south Interstate Highway in the US state of Illinois that connects St. Louis, Missouri, to the Chicago metropolitan area. It enters the state from Missouri near East St. Louis, Illinois, and runs to U.S. Route 41 (US 41, Lake Shore Drive) near Downtown Chicago, where the highway ends, a distance of 294.38 miles (473.76 km).[2] The road also runs through the Illinois cities of Springfield, Bloomington, and Joliet. The section in Cook County is officially named the Stevenson Expressway for the governor, and in DuPage County it's officially named the Joliet Freeway or the Will Rogers Freeway for the humorist. The section from the south suburbs to the area near Pontiac is officially named the Barack Obama Presidential Expressway after the president, who launched his political career from Illinois.[3]
- ^ Adderly, Kevin (October 31, 2002). "Table 1: Main Routes of the Dwight D. Eisenhower National System Of Interstate and Defense Highways as of October 31, 2002". Route Log and Finder List. Federal Highway Administration. OCLC 47914009. Retrieved December 30, 2013.
- ^ MapPoint (Map). Microsoft. 2002.
- ^ Mackey, Brian. "Illinois Highway To Be Named After Barack Obama". Retrieved February 16, 2018.