Interstate 41 west of the trumpet interchange with Wis 441 (Tri County Freeway) in Appleton. Photo taken 05/30/11.

Interstate 41 travels 172.5 miles north from the Illinois state line at Pleasant Prairie to Howard near Green Bay. The designation was one of four considered for the U.S. 41 and 45 corridor between Milwaukee and Green Bay including I-47, I-594 and I-643. AASHTO ultimately chose I-41, approving it on November 15, 2012. FHWA concurrence followed and signs started to appear along U.S. 41 in May 2015.

Interstate 41 / U.S. 41 Wisconsin Guides

Shields and guide signs for U.S. 41 were vastly changed over to reflect Interstate 41 by November 2015. U.S. 41 only appears now on reassurance and confirming markers alongside I-41 on the freeway mainline and on supplimental signs at major crossroads.

Interstate 41 combines with I-94 in southern Kenosha County. The two overlap northward to Kenosha, Racine and the south Milwaukee suburbs. Once in Milwaukee, I-41 turns west alongside Interstates 43 south and 894 through Greenfield as I-94 continues to Downtown with I-43 north.

Interstates 41 and 894 turn north from the west split with I-43 (Hale Interchange) to West Allis and Interstate 94 at the Zoo Interchange. Multi-year construction through 2018 is currently underway to modernize that exchange, which was designed with left-hand ramps in all directions. I-894 ends there as I-41 & U.S. 45 continue north through Wauwatosa and north Milwaukee to leave Milwaukee County via Menomonee Falls and Germantown.

U.S. 45 takes a freeway of its own north from Germantown to West Bend as Interstate 41 advances northwest along a more rural route to Dodge and Fond du Lac Counties. The city of Fond du Lac, located at the south end of Lake Winnebago, is next. U.S. 151 ties into I-41 there as the freeway bypasses the west side of the city.

Northward, I-41 and U.S. 45 reconvene at the city of Oshkosh on the west side of Lake Winnebago. U.S. 45 leaves the freeway corridor toward New London as Interstate 41 approaches the city of Appleton and U.S. 10. Circling along the west and north sides of the Fox Cities, an urban loop, Wis 441, serves Menasha, south Appleton and Kimberly.

Beyond Appleton, Interstate 41 travels east to Little Chute and Kaukauna before turning northeast to De Pere, Ashwaubenon and Green Bay. I-41 forms the western quadrant of a freeway belt line encircling the city of Green Bay to the northern terminus of Interstate 43. I-41 ends a short distance north of I-43 at Lineville Road within the village of Howard. U.S. 41 emerges there and overlaps with U.S. 141 along a freeway to Sumamico and Abrams. Nearly the remainder of the US route travels an expressway northeast to Oconto, Peshtigo and Marinette. U.S. 41 exits the state via a system of boulevards to the Marinette city center and across the Menominee River into Michigan.

    Connect with:
    Interstate 43
    Interstate 94
    Interstate 794 / State Trunk Highway 794
    Interstate 894
    U.S. 10
    U.S. 45
    U.S. 141
    U.S. 151
    State Trunk Highway 29
    State Trunk Highway 32 - Red Arrow Highway
    State Trunk Highway 54
    State Trunk Highway 172
    State Trunk Highway 441

    Page Updated 10-29-2019.

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