Wisconsin Highway 166

State Trunk Highway 166
State Trunk Highway 166
Fond du Lac Avenue
Route information
Length	2.1 mi (3.4 km)
Existed	1927–1953
Major junctions
South end	US 45 / WIS 55
North end	WIS 74 in Menomonee Falls
Location
Country	United States
State	Wisconsin
Highway system
	Wisconsin State Trunk Highway System; Interstate; US; State; Scenic; Rustic;

Wisconsin Highway 166 (WIS 166) was a state highway in the Milwaukee metropolitan area in Wisconsin. The route traveled in a southeast–northwest direction from US 45/WIS 55 to WIS 74 in Menomonee Falls (now just Main Street). WIS 166 was removed in 1953 when US 41 moved over.

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