Wisconsin Highway 175

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State Trunk Highway 175 marker

State Trunk Highway 175
Route information
Maintained by WisDOT
Length: 51.40 mi[1] (82.72 km)
Major junctions
South end: WIS 59 in West Milwaukee
North end: US 151 in Fond du Lac
Counties: Milwaukee, Waukesha, Washington, Dodge, Fond du Lac
Highway system
WIS 173 WIS 178
Former northern terminus

State Trunk Highway 175 (often called Highway 175, STH 175 or WIS 175) is a state highway in the U.S. state of Wisconsin. It runs north–south in central Wisconsin from West Milwaukee to just south of Fond du Lac.

The highway follows the former route of U.S. Highway 41 before 41's current route was created between 1953 and 1955. Portions of the highway were part of the Yellowstone Trail. North Fond du Lac created a park dedicated to the trail, which was the first transcontinental automobile highway through the upper tier of states in the United States.


Commemorative sign along former WIS 175 at Yellowstone Trail Park in North Fond du Lac

The highway was shorted by 17.1 miles (27.5 km) on January 1, 2007. The northern terminus was moved from U.S. Route 45 near Oshkosh to its present location near Fond du Lac. The portion in Winnebago County became County Highway R, and the portion in Fond du Lac County (including through the Van Dyne, North Fond du Lac, and Fond du Lac communities) became County Highway RP.[2]

Numerous segments of the highway are marked for changing to local control, including segments in Washington County.

2015 extension[edit]

Beginning in May 2015, most of U.S. Route 41 in Wisconsin underwent conversion to Interstate 41 and rerouted to follow an existing freeway alignment in Milwaukee County. Beginning the following month, WIS 175 signs began replacing US 41 signs in the Milwaukee area, where the designation was extended beyond I-94 along the Stadium Freeway, also replacing Highway 341 between the Stadium Interchange and WIS 59.[3]

Major intersections[edit]

County Location mi km Exit Destinations Notes
Milwaukee West Milwaukee 0.0 0.0 WIS 59 (National Avenue) Southern terminus; southern end of freeway
Milwaukee 0.5 0.80 Miller Park / Canal Street
1.0 1.6 38 I-94 – Downtown, Madison Only numbered southbound
1.3 2.1 US 18
1.8 2.9 State Street / Vliet Street
2.2 3.5 Washington Boulevard Northbound exit only
2.6 4.2 Lloyd Street No southbound exit
2.8 4.5 Lisbon Avenue Northern end of freeway
5.5 8.9 WIS 190
5.8 9.3 WIS 181
5.8 9.3 WIS 181
9.5 15.3 I-41 / US 41 / US 45 / WIS 100 / Metro Auto Mall No access to southbound I-41 from northbound WIS 175 or northbound I-41 from southbound WIS 175; Metro Auto Mall northbound exit only
Washington Richfield WIS 167 Roundabout
Polk To WIS 164 Grade-separated
Slinger WIS 60 – Hartford, Grafton
WIS 144 north Southern terminus of WIS 144
Town of Hartford WIS 83 south – Hartford Northern terminus of WIS 83
Addison WIS 33 – Horicon, Allenton
Dodge Theresa WIS 28 west / WIS 67 south – Mayville Southern end of WIS 28/WIS 67 concurrency
Town of Theresa WIS 28 east – Kewaskum Northern end of WIS 28 concurrency
Lomira WIS 67 north Northern end of WIS 67 concurrency
Town of Lomira WIS 49 – Brownsville
Fond du Lac Fond du Lac US 151 Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi


  1. ^ Bessert, Chris. "Wisconsin Highways: Highways 170-179 (Highway 175)". Wisconsin Highways. Retrieved 2007-05-16. 
  2. ^ Press release from the Wisconsin Department of Transportation "WIS 175 in Winnebago and Fond du Lac counties being renamed", retrieved May 16, 2007
  3. ^ Marley, Patrick (July 29, 2013). "Highway 41's upgrade to interstate is ahead of schedule". Milwaukee Journal Sentinel. Retrieved August 1, 2013.