| State Trunk Highway 171 | ||||
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| Route information | ||||
| Maintained by WisDOT | ||||
| Length: | 33.39 mi (53.74 km) | |||
| Major junctions | ||||
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| East end: |
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| Location | ||||
| Counties: | Crawford, Richland | |||
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State Trunk Highway 171 (often called Highway 171, STH 171 or WIS 171) is a state highway in the U.S. state of Wisconsin. It runs east–west in southwest Wisconsin from near Ferryville to Boaz.