U.S. Route 18 in Wisconsin

U.S. Highway 18
US 18 highlighted in red
Route information
Maintained by WisDOT
Length	182.16 mi[1] (293.16 km)
Existed	1926–present
Major junctions
West end	US 18 in Prairie du Chien
Major intersections	US 61 in Fennimore US 151 in Dodgeville US 12 / US 14 in Madison US 14 / US 151 in Madison US 51 in Madison I-39 / I-90 in Madison US 12 in Cambridge I-94 in Waukesha I-41 / US 41 / US 45 in Milwaukee I-43 in Milwaukee
East end	Lincoln Memorial Drive in Milwaukee
Location
Country	United States
State	Wisconsin
Counties	Crawford, Grant, Iowa, Dane, Jefferson, Waukesha, Milwaukee
Highway system
United States Numbered Highway System List Special Divided Wisconsin State Trunk Highway System Interstate US State Scenic Rustic
← WIS 17 → WIS 18

U.S. Highway 18 (US 18) in the state of Wisconsin runs east–west across the southern part of the state. The highway serves as major connecting route between Madison and the southwest corner of the state. East of Madison, the route is paralleled by Interstate 94 (I-94) and serves as a local connection route to the communities along the Interstate. US 18 enters Wisconsin at Prairie du Chien and ends in downtown Milwaukee at Lincoln Memorial Drive, across from the Milwaukee Art Museum.