This article relies largely or entirely on a single source. (November 2021) |
Route information | ||||
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Maintained by WisDOT | ||||
Length | 92.83 mi[1] (149.40 km) | |||
Major junctions | ||||
South end | IL 78 in Gratiot | |||
North end | I-39 / I-90 / I-94 in Portage | |||
Location | ||||
Country | United States | |||
State | Wisconsin | |||
Counties | Lafayette, Iowa, Green, Dane, Sauk, Columbia | |||
Highway system | ||||
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State Trunk Highway 78 (often called Highway 78, STH-78 or WIS 78) is a state highway in the U.S. state of Wisconsin. It runs north–south in south central Wisconsin from the Illinois border near Gratiot to Portage.