U.S. Route 18 in Wisconsin

US Highway 18
Route information
Maintained by WisDOT
Length:	182.16 mi (293.16 km)
Existed:	1926 – present
Major junctions
West end:	US 18 in Prairie du Chien
	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
Counties:	Crawford, Grant, Iowa, Dane, Jefferson, Waukesha, Milwaukee
Highway system
United States Numbered Highway System List Special Divided Replaced Wisconsin State Trunk Highway System Interstate U.S. State Scenic Rustic ← WIS 17 WIS 18 →

In the U.S. state of Wisconsin, U.S. Route 18 (normally called U.S. Highway 18, Highway 18 or US 18) 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 parallels Interstate 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.

US 18 enters Crawford County from Iowa, crossing the Mississippi River using the Marquette-Joliet Bridge just west of Prairie du Chien. WIS 60 begins at the state line and runs concurrent with US 18 east from there. The two highways turn south at the along with Wisconsin Highway 35 downtown and head southeast out of the city. WIS 60 branches northeast from US 18 at Bridgeport. US 18 and WIS 35 continue southeast into Grant County The two highways split at Patch Grove with WIS 35 continuing southeastward along with WIS 133 south, while US 18 turns eastward along with WIS 133 north. WIS 133 branches north at Mount Hope. US 18 and US 61 junction in downtown Fennimore. and WIS 80 north joins the highway in Montfort, on the Iowa County line.

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Wikipedia