Route information | ||||
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Maintained by WisDOT | ||||
Length | 39.69 mi[1] (63.87 km) | |||
Major junctions | ||||
South end | WIS 32 in Oak Creek | |||
I-41 / I-94 / US 41 in Oak Creek US 45 / WIS 36 in Franklin I-43 / US 45 in Greenfield I-94 in West Allis US 18 in Wauwatosa US 45 in Wauwatosa US 45 in Milwaukee I-41 / US 41 / WIS 175 in Milwaukee I-41 / US 41 / US 45 in Menomonee Falls | ||||
North end | I-43 / WIS 32 in Bayside | |||
Location | ||||
Country | United States | |||
State | Wisconsin | |||
Counties | Milwaukee, Waukesha | |||
Highway system | ||||
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State Trunk Highway 100 (STH-100, commonly known as Highway 100 or WIS 100) is a road which encircles the outer edges of Milwaukee County, Wisconsin, United States.