Wisconsin Highway 31

State Trunk Highway 31
WIS 31 highlighted in red
Route information
Maintained by WisDOT
Length	22.86 mi[1] (36.79 km)
Major junctions
South end	IL 131 in Pleasant Prairie
Major intersections	WIS 165 in Pleasant Prairie WIS 50 in Kenosha WIS 158 in Kenosha WIS 11 in Sturtevant WIS 20 in Mount Pleasant WIS 38 in Mount Pleasant
North end	WIS 32 in Caledonia
Location
Country	United States
State	Wisconsin
Counties	Kenosha, Racine
Highway system
Wisconsin State Trunk Highway System Interstate US State Scenic Rustic
← WIS 30 → WIS 32

State Trunk Highway 31 (often called Highway 31, STH-31 or WIS 31) is a 22.86-mile (36.79 km) state highway in Kenosha and Racine counties in the US state of Wisconsin that runs north–south as a suburban route passing Racine and Kenosha. With the exception of a two-mile (3.2 km) stretch between Four Mile Road and WIS 32 at the north end, WIS 31 is a multi-lane urban highway.