Route information | ||||
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Maintained by IDOT | ||||
Length | 9.89 mi[1] (15.92 km) | |||
Existed | 1954–present | |||
Major junctions | ||||
South end | IL 158 in Millstadt | |||
North end | IL 15 in Alorton | |||
Location | ||||
Country | United States | |||
State | Illinois | |||
Counties | St. Clair | |||
Highway system | ||||
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Illinois Route 163 (IL 163) is a 9.89-mile-long (15.92 km) north–south highway in southwestern Illinois.[1] It runs from IL 158 in Millstadt north to IL 15 in Alorton; the route is located entirely within St. Clair County. IL 163 is maintained by the Illinois Department of Transportation.