Illinois Route 4
IL 4 highlighted in red | ||||
| Route information | ||||
| Maintained by IDOT | ||||
| Length | 170.44 mi (274.30 km) | |||
| Existed | November 5, 1918–present | |||
| Major junctions | ||||
| South end | IL 13 / IL 127 in Vergennes | |||
| North end | I-55 BL / IL 29 in Springfield | |||
| Location | ||||
| Country | United States | |||
| State | Illinois | |||
| Counties | Jackson, Perry, Randolph, Washington, St. Clair, Madison, Macoupin, Sangamon | |||
| Highway system | ||||
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Illinois Route 4 is a major north–south highway that runs south from the Interstate 55 business loop around the state capital of Springfield, south to Illinois Route 13 just north of Murphysboro. This is a distance of 170.44 miles (274.30 km).