US 41 in Wisconsin


US 41
Begin Kenosha
End Marinette
Length 223 mi
Length 359 km

  • Kenosha
  • Racine
  • Oak Creek
  • Milwaukee
  • Menomonee Falls
  • Cedarburg
  • Bottom of the lake
  • Oshkosh
  • Appleton
  • Green Bay
  • Marinette


US 41 is a US Highway in the US state of Wisconsin. Forming a north-south route in the east of the state, the road runs from the Illinois border along with Interstate 94 to Milwaukee , and follows Interstate 41 from Milwaukee north of Green Bay, before continuing for a while. walk to the Michigan border at Marinette. The total route is 359 kilometers long.

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Travel directions

The split of US 41 and US 141 at Abrams.

Interstate 94

See Interstate 94 in Wisconsin for the main topic.

Milwaukee – Green Bay

See Interstate 41 in Wisconsin for the main topic.

Green Bay – Michigan

North of Green Bay, US 41 continues as a freeway until Abrams, where US 141 continues straight to Iron Mountain, turning off US 41 to Marinette at the Michigan border.


US 41 was created in 1926 and was one of the primary north-south routes of the United States. Beginning in the 1960s, much of US 41 north of Milwaukee has been upgraded to a freeway and has been numbered Interstate 41 since 2015.

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Stadium Freeway

The Stadium Freeway is one of the older freeways in Wisconsin. US 41 ran on its northern part, from the Stadium Interchange with I-94 to Lisbon Avenue. The first part of this opened in 1961, from National Avenue to Vliet Street. The southern portion of this is numbered as State Route 341. In 1962 the rest of the highway opened from Vliet Street to Lisbon Avenue.

The Stadium Freeway was originally planned as a much longer highway, from the Airport Freeway (I-894/I-43) north to Cedarburg, paralleling and west of I-43. Most of this route has not been built, so the Stadium Freeway is now just a spur, numbered partly US 41, partly SR-341. In 2015, US 41 in Milwaukee shifted over newly assigned I-41, which in turn follows I-894. The old section between the Stadium Interchange with I-94 and I-41 via Lisbon Avenue and Appleton Avenue has been renumbered as State Route 175.

Freeway Lake Bottom

The Fond du Lac Freeway is part of several routes. The portion east of US 45 in Milwaukee is numbered as State Route 145. Between SR-145 and Richfield Interchange, the route is numbered I-41/US 41/US 45. This route was opened in 1953 as a divided highway. However, it was not a highway, there were level intersections. From the 1960s to the 1970s, intersections were replaced by connections and the Fond du Lac Freeway was created. In 1971, US 41 between Milwaukee and the fork of US 41/45 was a freeway.

The part outside the Milwaukee metropolitan area, from the US 41/US 45 junction to Fond du Lac, was built in the 1950s as a new two-lane road avoiding the villages on the route. This was then quickly doubled to a 2×2 divided highway, in 1958 most of US 41 up to Fond du Lac had 2×2 lanes. However, this was not a freeway, most intersections were at ground level, with or without traffic lights. From the 1960s, intersections on this route were replaced by grade-separated intersections. This was a lengthy process that lasted more than 35 years. US 41 between Milwaukee and Fond du Lac has been a full-fledged freeway since about 1997-1998. Since 2013, this part is also included as part of theInterstate 41 considered.

Bottom of the Lake – Appleton

I-41 / US 41 in Fond du Lac.

US 41 was upgraded to a 2×2 divided highway mainly in the 1950s between Fond du Lac and Appleton. In 1955, the Lake Butte des Morts Causeway opened to traffic, part of the Oshkosh bypass. It was doubled in 1969 and numerous connections were also opened around Appleton during the 1960s. The highway through Oshkosh was completed in 1973. In 1975, US 41 between Oshkosh and Appleton was granted freeway status after all intersections were replaced with connections. In 1999, the last intersection between Fond du Lac and Oshkosh was replaced by a junction, completing the highway between Fond du Lac and Appleton.

A 40-kilometer stretch from the south side of Oshkosh to the west side of Appleton has been widened to 2×3 lanes. The section between Neenah and Appleton was widened to 2×3 lanes as early as the 1990s. In about 2010, a major project to widen US 41 to 2×3 lanes between Oshkosh and Neenah began and was completed by 2012, and the Oshkosh bypass was widened to 2×3 lanes, which was completed by 2015.

Appleton – Green Bay

Appleton’s bypass dates back to the 1930s. The first section of Appleton’s two-lane bypass opened in 1937 and was completed in 1948. Construction was delayed by the Second World War. During the 1960s, the Appleton bypass was upgraded to freeway.

In 1953, the Green Bay bypass opened to traffic. In 1958, the route just south of Green Bay was upgraded to a 2×2 divided highway with intersections. The Green Bay bypass was upgraded to freeway in 1968. In 1974 the bypass was extended south to De Pere. For a long time there were intersections with traffic lights between Appleton and Green Bay. Between 1999 and 2001 the last intersections here were replaced with connections, and since 2001 the highway between Milwaukee and Green Bay has been completed.

The entire passage of Green Bay has been widened to 2×3 lanes over a length of 21 kilometers. This was an extensive project that was carried out in the period 2011-2016, in which connections and nodes were also reconstructed.

Traffic intensities

77,000 vehicles drive daily on the Illinois border, rising to 87,000 vehicles at Racine and 160,000 vehicles at the Milwaukee airport. The double-numbered I-43 along the south side of Milwaukee has 133,000 vehicles per day. After that, 160,000 vehicles drive along the west side of Milwaukee, just north of I-94. This drops to 120,000 vehicles in the northern suburbs and 40,000 vehicles until the split with US 45. After that, 30,000 to 35,000 vehicles drive to Fond du Lac.

Fond du Lac has a maximum of 38,000 vehicles, increasing to a maximum of 62,000 vehicles in Oshkosh and 59,000 vehicles between Oshkosh and Appleton. This rises to 77,000 vehicles in Appleton and 52,000 vehicles between Appleton and Green Bay.

US 41 in Wisconsin