Wisconsin Highway 100

State Trunk Highway 100
WIS 100 highlighted in red
Route information
Maintained by WisDOT
Length	39.69 mi[1] (63.87 km)
Major junctions
South end	WIS 32 in Oak Creek
Major intersections	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
Wisconsin State Trunk Highway System Interstate US State Scenic Rustic
← WIS 99 → WIS 101

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.