| State Trunk Highway 121 | ||||
|---|---|---|---|---|
| Route information | ||||
| Maintained by WisDOT | ||||
| Length: | 45.07 mi[1] (72.53 km) | |||
| Major junctions | ||||
| South end: | WIS-88 near Gilmanton | |||
| US-53/CTH-D in Whitehall I-94/CTH-FF in Northfield |
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| North end: | WIS-95 in Alma Center | |||
| Highway system | ||||
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Wisconsin highways
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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.