Route information | ||||
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Maintained by IDOT and CDOT | ||||
Length | 110.71 mi[1] (178.17 km) | |||
Existed | 1924[2]–present | |||
Major junctions | ||||
West end | IL 73 in Lanark | |||
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East end | I-90 / IL 43 in Chicago | |||
Location | ||||
Country | United States | |||
State | Illinois | |||
Counties | Carroll, Ogle, DeKalb, Kane, Cook | |||
Highway system | ||||
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Illinois Route 72 is an east–west state highway in northern Illinois. It runs from the intersection with Illinois Route 73 north of Lanark east to Illinois Route 43 (Harlem Avenue) in Chicago. This is a distance of 110.71 miles (178.2 km).[1]