Illinois Route 1

Illinois Route 1 marker
Illinois Route 1
Map
IL 1 highlighted in red
Route information
Maintained by IDOT and CDOT
Length323.06 mi[1] (519.91 km)
Existed1918[2]–present
Major junctions
South end KY 91 / Cave-in-Rock Ferry in Cave-in-Rock
Major intersections
North end I-57 in Chicago
Location
CountryUnited States
StateIllinois
CountiesClark, Cook, Crawford, Edgar, Edwards, Gallatin, Hardin, Iroquois, Kankakee, Lawrence, Vermilion, Wabash, White, Will
Highway system
I-490 IL 2

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).[1]

  1. ^ a b Illinois Technology Transfer Center (2013). "T2 GIS Data". Archived from the original on June 26, 2013. Retrieved January 29, 2015.
  2. ^ Carlson, Rick (March 15, 2006). "Routes 1 thru 20". Illinois State Highways Page. Retrieved March 24, 2006.[self-published source]