Illinois Route 1

Illinois Route 1
Illinois Route 1
	IL 1 highlighted in red
Route information
	Maintained by IDOT and CDOT
Length	323.06 mi (519.91 km)
Existed	1918–present
Major junctions
South end	KY 91 / Cave-in-Rock Ferry in Cave-in-Rock
	US 45 in Norris City; I-64 in Grayville; US 50 in Lawrenceville; I-70 in Marshall; US 36 in Chrisman; I-74 in Danville; US 24 in Watseka; US 30 / Lincoln Highway in Chicago Heights; ; ; I-80 Toll / I-294 Toll in East Hazel Crest; US 6 in Harvey;
North end	I-57 in Chicago
Location
Country	United States
State	Illinois
Counties	Clark, Cook, Crawford, Edgar, Edwards, Gallatin, Hardin, Iroquois, Kankakee, Lawrence, Vermilion, Wabash, White, Will
Highway system
	Illinois State Highway System; Interstate; US; State; Tollways; Scenic;

Illinois Route 1 (IL 1) is a state highway in the U.S. state of Illinois. Running parallel to the Indiana border, the highway starts at the free ferry crossing to Kentucky at Cave-in-Rock on the Ohio River and runs north to the south side of Chicago as Halsted Street at an intersection with Interstate 57. This is a distance of 325.59 miles (523.99 km).