State Trunk Highway 121 | ||||
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Route information | ||||
Maintained by WisDOT | ||||
Length: | 45.07 mi (72.53 km) | |||
Major junctions | ||||
West end: |
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East end: |
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Location | ||||
Counties: | Buffalo, Trempealeau, Jackson | |||
Highway system | ||||
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State Trunk Highway 121 (often called Highway 121, STH 121 or WIS 121) is a state highway in the U.S. state of Wisconsin. It runs in east–west in west-central Wisconsin from Gilmanton to Alma Center.