U.S. Route 51 in Wisconsin

U.S. Highway 51
US 51 highlighted in red
Route information
Maintained by WisDOT
Length	316.59 mi[1] (509.50 km)
Existed	November 11, 1926 (1926-11-11)–present
Major junctions
South end	US 51 in Beloit
Major intersections	US 14 in Janesville I-39 / I-90 / WIS 73 in Edgerton I-39 / I-90 in Stoughton US 12 / US 18 in Madison US 151 in Madison I-39 / I-90 / I-94 in Madison I-39 in Portage US 10 / WIS 66 in Stevens Point I-39 / WIS 29 in Rothschild US 8 in Bradley
North end	US 2 in Hurley
Location
Country	United States
State	Wisconsin
Counties	Rock, Dane, Columbia, Marquette, Waushara, Portage, Marathon, Lincoln, Oneida, Vilas, Iron
Highway system
United States Numbered Highway System List Special Divided Wisconsin State Trunk Highway System Interstate US State Scenic Rustic
← WIS 50 → WIS 51
← US 10 WIS 10 → WIS 11

U.S. Highway 51 (US 51) in the U.S. state of Wisconsin runs north–south through the central part of the state. It enters from Illinois at Beloit, and runs north to its northern terminus in Hurley at a roundabout junction with US 2. Some of the route of US 51 runs concurrently with Interstate 39 (I-39).