List of Interstate Highways in Illinois

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This is a list of Interstate Highways in Illinois, all of which are owned and maintained by the U.S. state of Illinois.[1] The Illinois Department of Transportation (IDOT) is responsible for maintaining the Interstate Highways in Illinois. The Interstate Highway System in Illinois consists of twelve primary highways and eleven auxiliary highways which cover 2,169.53 miles (3,491.52 km).[2] The Interstate Highway with the longest section in Illinois is Interstate 57 at 358.57 miles (577.06 km); the shortest Interstate Highway in Illinois is Interstate 190 at 3.07 miles (4.94 km).

Primary Interstate Highways [edit]

Highway Location Length[2][3] Description Date established Notes Map
I-24.svg I-24 Williamson, Johnson, and Massac counties 700138730999999999938.73 mi (62.33 km) I-24 runs from I-57 in rural Williamson County east to the Kentucky border in Metropolis. I-24 (IL) map.svg
I-39.svg I-39 McLean, Woodford, Marshall, LaSalle, Lee, Ogle, and Winnebago counties 7002140820000000000140.82 mi (226.63 km) I-39 runs from I-55 in Normal to the Wisconsin border in South Beloit. 1989 [4] I-39 (IL) map.png
I-55.svg I-55 St. Clair, Madison, Macoupin, Montgomery, Sangamon, Logan, McLean, Livingston, Grundy, Will, DuPage, and Cook counties 7002313080000000000313.08 mi (503.85 km) I-55 runs from the Missouri border in East St. Louis to US 41 in Chicago. I-55 (IL) map.svg
I-57.svg I-57 Alexander, Pulaski, Union, Johnson, Williamson, Franklin, Jefferson, Marion, Fayette, Effingham, Cumberland, Coles, Douglas, Champaign, Ford, Iroquois, Kankakee, Will, and Cook counties 7002364160000000000364.16 mi (586.06 km) I-57 runs from the Missouri border near Cairo to I-94 in southern Chicago. Interstate 57 map.png
I-64.svg I-64 St. Clair, Clinton, Washington, Jefferson, Wayne, White 7002128120000000000128.12 mi (206.19 km) I-64 runs from the Missouri state line in East St. Louis to the Indiana state line in Grayville. I-64 (IL) map.svg
I-70.svg I-70 St. Clair, Madison, Bond, Fayette, Effingham, Cumberland, and Clark counties 7002155940000000000155.94 mi (250.96 km) I-70 runs from the Missouri state line in East St. Louis to the Indiana state line in Clark County. I-70 (IL) map.svg
I-72.svg I-72 Pike, Scott, Morgan, Sangamon, Macon, Piatt, and Champaign counties 7002182560000000000182.56 mi (293.80 km) I-72 runs from the Missouri state line in Pike County to east of I-57 in Champaign. I-72 (IL) map.svg
I-74.svg I-74 Rock Island, Henry, Knox, Peoria, Tazewell, Woodford, McLean, De Witt, Piatt, Champaign, and Vermillion counties 7002220340000000000220.34 mi (354.60 km) I-74 runs from the Iowa border in Moline to the Indiana border in Danville. I-74 (IL) map.svg
I-80.svg I-80 Rock Island, Henry, Bureau, LaSalle, Grundy, Kendall, Will, and Cook counties 7002163520000000000163.52 mi (263.16 km) I-80 runs from the Iowa border in Rock Island County to the Indiana border in Lansing. I-80 (IL) map.svg
I-88.svg I-88 Rock Island, Whiteside, Lee, Ogle, DeKalb, Kane, DuPage, and Cook counties 7002140600000000000140.60 mi (226.27 km) I-88 runs from I-80 in Silvis to I-290 in Hillside. 1987 [5] Interstate 88 W map.png
I-90.svg I-90 Winnebago, Boone, McHenry, Kane, and Cook counties 7002123890000000000123.89 mi (199.38 km) I-90 runs from the Wisconsin state line in South Beloit to the Indiana state line in Chicago. I-90 (IL) map.svg
I-94.svg I-94 Lake and Cook counties 700178000000000000078.00 mi (125.53 km) I-94 runs from the Wisconsin state line north of Wadsworth to the Indiana state line in Lansing I-94 (IL) map.svg

Auxiliary Interstate Highways [edit]

Highway Location Length[2] Description Date established Notes
I-155.svg I-155 Logan and Tazewell counties 700132130000000000032.13 mi (51.71 km) I-155 runs from I-55 in Logan County to I-74 in Morton. 1992 [6]
I-172.svg I-172 Adams County 700119690000000000019.69 mi (31.69 km) I-172 runs from I-72 in Fall Creek to US 24 in Fowler. 1995 [7]
I-180.svg I-180 Putnam and Bureau counties 700113190000000000013.19 mi (21.23 km) I-180 runs from IL 71 in Hennepin to I-80 in rural Bureau County.
I-190.svg I-190 Cook County 70003070000000000003.07 mi (4.94 km) I-190 runs from O'Hare International Airport in Chicago to I-90 in Chicago.
I-255.svg I-255 Monroe, St. Clair, and Madison counties 700127050000000000027.05 mi (43.53 km) I-255 runs from the Missouri state line in Columbia to I-270 and IL 255 in Pontoon Beach.
I-270.svg I-270 Madison County 700114970000000000014.97 mi (24.09 km) I-270 runs from the Missouri state line at the New Chain of Rocks Bridge to I-70 in Troy.
I-280.svg I-280 Rock Island and Henry counties 70008210000000000008.21 mi (13.21 km) I-280 runs from the Iowa state line in Rock Island to I-74 and I-80 in Colona.
I-290.svg I-290 Cook and DuPage counties 700129840000000000029.84 mi (48.02 km) I-290 runs from I-90 in Schaumburg to I-90 and I-94 in Chicago.
I-294.svg I-294 Cook County 700148100000000000048.10 mi (77.41 km) I-294 runs from I-94 in Northbrook to I-80 and I-94 in South Holland.
I-355.svg I-355 Will, Cook, and DuPage counties 700132500000000000032.5 mi (52.3 km) I-355 runs from I-80 in New Lenox to I-290 in Itasca. 1989 [8]
I-474.svg I-474 Peoria and Tazewell counties 700114880000000000014.88 mi (23.95 km) I-474 runs from I-74 and IL 6 in Peoria to I-74 in Tazewell County. It serves as a bypass of Peoria.

References [edit]

  1. ^ Federal Highway Administration. "Interstate Frequently Asked Questions". Retrieved 2008-02-25. 
  2. ^ a b c "Route Log and Finder List — Interstate Routes in Each of the 50 States, District of Columbia, and Puerto Rico — table 3". Federal Highway Administration. 2002-10-31. Retrieved 2008-03-17. 
  3. ^ I-355 originally ran 20.01 miles (32.20 km) from I-55 to I-290, according to Illinois' 2005 GIS data. The southern extension added 12.5 miles (20.1 km) to this length, according to the Illinois State Toll Highway Authority.
  4. ^ Zehr, Melinda (1 December 1989). "5-mile section of I-39 to open in 2 weeks". The Pantagraph. 
  5. ^ Mehler, Neil H. (1987-07-06). "Road with many names gets a new one". Chicago Tribune. Retrieved 2008-02-16. 
  6. ^ Smothers, Michael (1992-10-30). "31-mile superhighway opens after 30-year drive for safer road". Peoria Journal-Star. 
  7. ^ American Association of State Highway and Transportation Officials (1995-06-09). "Route Numbering Committee Agenda". Retrieved 2008-04-03. 
  8. ^ Hausner, Les (1989-12-22). "Opening of I-355 will put some zip in Du Page traffic". Chicago Sun Times. Retrieved 2008-01-11. 
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