Interstate Highways in Wisconsin

The shields of Wisconsin's primary and auxiliary Interstate highways.

There are six primary Interstate highways and three auxiliary Interstate highways in Wisconsin.

Interstate 39 (I-39) - Runs from the Illinois state line near Beloit, WI to the Superior state line near Land O' Lakes, WI.

Interstate 41 (I-41) - Runs from the Illinois state line near Beloit, WI to I-43 and US 41/US 141 in Howard.

Interstate 43 (I-43) - Runs from the Illinois state line near Pikeville, WI to the Superior state line on the Menominee River near Marinette, WI.

Interstate 90 (I-90) - Runs from the Minnesota state line on the Mississippi River in La Crosse, WI to the Illinois state line in Beloit, WI.

Interstate 94 (I-94) - Runs from the Minnesota state line on the St. Croix River at Hudson, WI to the Illinois state line near Russell, IL.

Interstate 98 (I-98) - Runs from the Superior state line on the Montreal River at Hurley, WI to the Minnesota state line on St. Louis Bay at Superior, WI.

Interstate 241 (I-241) - Runs from I-41/541 and US 10/41 in Fox Crossing to I-41 and US 41 in Appleton. Also known as the Tri-County Expressway, I-241 serves as a southern bypass of Appleton. Was originally designated as Wisconsin Highway 441 from 1986 to 1994.

Interstate 341 (I-341) - Runs from I-41 and US 45/151 in Fond du Lac to US 151 and County Route K (Fond du Lac County, Wisconsin) south of Taycheedah. I-341 is also known as the Wisconsin Law Enforcement Officers Highway and runs concurrent with US 151 for its entire length.

Interstate 541 (I-541) - Runs from I-41/241 and US 10/41 in Fox Crossing to US 10 and Wisconsin Highways 54/49 in Waupaca. I-541 runs concurrent with US 10 for its entire length.

Interstate 794 (I-794) - Runs from I-43/94 and US 41 in Milwaukee to Wisconsin Highway 794 in Milwaukee.

UPDATE (February 24, 2024): Added I-241, I-341 & I-541 to this page.

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