Interstate 90 in Wisconsin

Interstate 90
I-90 highlighted in red
Route information
Maintained by WisDOT
Length	187.13 mi[1] (301.16 km)
NHS	Entire route
Major junctions
West end	I-90 at Minnesota state line
Major intersections	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
← WIS 89 → WIS 91

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.^{[citation needed]}