| State Trunk Highway 81 | ||||
|---|---|---|---|---|
| Route information | ||||
| Maintained by WisDOT | ||||
| Length: | 123.81 mi[1] (199.25 km) | |||
| Major junctions | ||||
| West end: | WIS 133 / Great River Road in Cassville | |||
| US 61 / WIS 35 in Lancaster US 151 near Platteville WIS 11 / WIS 69 in Monroe] |
||||
| East end: | I-39 / I-43 / I-90 in Beloit | |||
| Highway system | ||||
|
Wisconsin highways
|
||||
State Trunk Highway 81 (often called Highway 81, STH 81 or WIS 81) is a state highway in the U.S. state of Wisconsin. It runs east–west in southwest and south central Wisconsin from Beloit to Cassville. Between Brodhead and Monroe it shares it route with WIS 11 for 13 miles (21 km).