U.S. Route 51 in Wisconsin
…in red Route information Maintained by WisDOT Length 316.59 mi (509.50 km) Existed November 11, 1926 (1926-11-11)–present Major junctions South end US 51 in Beloit 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…