 U.S. Route 20 | ||||
|---|---|---|---|---|
| Ulysses S. Grant Memorial Highway | ||||
 US 20 highlighted in red | ||||
| Route information | ||||
| Maintained by IDOT and CDOT | ||||
| Length | 233.93 mi[1] (376.47 km) | |||
| Existed | 1926–present | |||
| Major junctions | ||||
| West end |  US 20 in East Dubuque | |||
| ||||
| East end |   US 12 / US 20 / US 41 in Chicago | |||
| Location | ||||
| Country | United States | |||
| State | Illinois | |||
| Counties | Jo Daviess, Stephenson, Winnebago, Boone, McHenry, Kane, DuPage, Cook | |||
| Highway system | ||||
| ||||
U.S. Route 20 (US 20) in the state of Illinois runs northwest to southeast in the northern end of the state. It crosses the Mississippi River into East Dubuque and exits Chicago south of the Chicago Skyway; the highway is 233.93 miles (376.47 km) long.[1] From Rockford eastward, US 20 begins to parallel Interstate 90 (I-90), and both highways follow each other until their Massachusetts terminus.
For its entire length in Illinois, US 20 is designated as the General Ulysses S. Grant Highway (often abbreviated the U.S. Grant Memorial Highway), though this designation is used primarily west of Elgin. The route forms highway-grade bypasses around Freeport, Rockford, and Elgin; east of the Elgin bypass (known as the Elgin Bypass or Dr. Martin Luther King Jr. Memorial Highway)[2], US 20 becomes the multilane surface Lake Street within Cook County. Within the southwestern suburbs and the South Side, US 20 runs concurrently with US 12 and US 45 (later US 41), ultimately leaving Illinois on Indianapolis Boulevard.
- ^ a b Illinois Technology Transfer Center (2007). "T2 GIS Data". Archived from the original on August 10, 2007. Retrieved November 8, 2007.
- ^ "Bill Status of HR1214 95th General Assembly". Archived from the original on June 25, 2021. Retrieved January 15, 2020.