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The Interstate Highway System in Illinois consists of 13 primary highways and 11 auxiliary highways which cover 2,248.93 miles (3,619.30 km). [2] The Interstate Highway with the longest section in Illinois is Interstate 57 at 358.57 miles (577.06 km); the shortest is Interstate 41 at 0.90 miles (1.45 km).
Five roads in Illinois were designated to receive federal money under the legislation; they were: the National Old Trails Road (National Road, present-day US 40), Lincoln Highway, Dixie Highway, the road from Chicago to Waukegan, and the road from Chicago to East St. Louis, including portions of IL 4, which was the actual predecessor to US 66 ...
Illinois Route 72 cross-sign mounted on a stoplight in Hoffman Estates. SBI Numbers are still used for several purposes, even when they do not match the posted number. IDOT District maps still refer to SBI numbers on the various roads it maintains, along with other non-posted designations that refer to how the route was authorized.
This is a list of U.S. Highways in Illinois, all of which are owned and maintained by the U.S. state of Illinois. The Illinois Department of Transportation (IDOT) is responsible for maintaining the U.S Highways in Illinois. The system in Illinois consists of 20 primary highways.
I-94 in Illinois is 61.53 miles (99.02 km) long. [1] The William G. Edens Expressway (also known as the Edens Parkway [2] and the Edens Superhighway [3]) is the main major expressway north from the city of Chicago to Northbrook. Only the short portion from the spur ramp to the expressway's end in Highland Park does not carry I-94. It was the ...
Serves two states: Illinois, Wisconsin I-42: 190: 310 I-35 in Noble County, Oklahoma: I-49 in Springdale, Arkansas: proposed — Future Interstate; will serve two states: Oklahoma, Arkansas I-42: 31.5: 50.7 I-40/US 70 in Garner, North Carolina: US 70 in Goldsboro, North Carolina: 2024: current Unfinished in North Carolina; North Carolina only I ...
Illinois's state route numbers originated in 1918 as State Bond Issues 1 through 46, used to finance the new roads. The numbers of the bond issues were then used to mark the highway routes along the way. Another series of bond issues were authorized in 1924 (47–185) and again were used to mark the roads they paid for.
Illinois Route 171 (IL 171) is a 38.61-mile-long (62.14 km) north–south state highway in northeastern Illinois. It runs from U.S. Route 6 (US 6) in Joliet north to Illinois Route 72 at the Chicago – Park Ridge border. [ 1 ]