U.S. Route 50 in Illinois

U.S. Route 50
US 50 highlighted in red
Route information
Maintained by IDOT
Length	165.79 mi[1] (266.81 km)
Existed	1926–present
Major junctions
West end	I-255 / US 50 at the Missouri state line in Columbia
Major intersections	I-64 / I-255 in Washington Park I-64 / IL 158 in O'Fallon US 51 in Sandoval I-57 in Salem US 45 in Flora IL 1 in Lawrenceville
East end	US 50 at the Indiana state line near Lawrenceville
Location
Country	United States
State	Illinois
Counties	Monroe, St. Clair, Clinton, Marion, Clay, Richland, Lawrence
Highway system
United States Numbered Highway System List Special Divided Illinois State Highway System Interstate US State Tollways Scenic
← IL 49 → IL 50
← US 12 IL 12 → IL 13

U.S. Route 50 (US 50) in the state of Illinois is an east–west highway across the southern portion of the state. It runs from the Jefferson Barracks Bridge, over the Mississippi River, to Missouri east, to the Red Skelton Memorial Bridge, over the Wabash River and to Indiana. This is a distance of 165.79 miles (266.81 km).^[1]