Interstate 90 in Wisconsin

Interstate 90
Interstate 90
	I-90 highlighted in red
Route information
	Maintained by WisDOT
Length	187.13 mi (301.16 km)
NHS	Entire route
Major junctions
West end	I-90 at Minnesota state line
	US 53 in La Crosse; I-94 in Tomah; I-39 in Portage; US 51 in Madison; US 151 in Madison; I-94 in Madison; US 12 / US 18 in Madison; US 14 in Janesville; I-43 in Beloit;
East end	I-39 / I-90 at Illinois state line
Location
Country	United States
State	Wisconsin
Counties	La Crosse, Monroe, Juneau, Sauk, Columbia, Dane, Rock
Highway system
	Interstate Highway System; Main; Auxiliary; Suffixed; Business; Future; Wisconsin State Trunk Highway System; Interstate; US; State; Scenic; Rustic;

Interstate 90 (I-90) runs east–west through the western, central and southern portions of the U.S. state of Wisconsin. About 187 miles (301 km) of I-90 lie in the state.

All 187 miles of I-90 in Wisconsin have a speed limit of 70 mph.