State Trunk Highway 80 (abbreviated as Highway 80, STH-80 or WIS 80) is a state highway in the U.S. state of Wisconsin. It runs north–south in southwest and west central Wisconsin from just south of Marshfield, near the geographic center of the state to the Illinois border near Hazel Green.

This article relies largely or entirely on a single source. (October 2022)

Quick Facts State Trunk Highway 80, Route information ...

State Trunk Highway 80
WIS 80 highlighted in red
Route information
Maintained by WisDOT
Length	175.73 mi (282.81 km)
Major junctions
South end	IL 84 in Hazel Green
Major intersections	US 151 in Platteville US 18 in Montfort US 18 in Cobb US 14 in Richland Center US 12 / WIS 16 in New Lisbon I-90 / I-94 in New Lisbon
North end	US 10 in Marshfield
Location
Country	United States
State	Wisconsin
Counties	Grant, Iowa, Richland, Vernon, Juneau, Wood
Highway system
Wisconsin State Trunk Highway System Interstate US State Scenic Rustic
← WIS 79 → WIS 81

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This section about roads may need to be written in a south-to-north or west-to-east direction.

WIS 80 begins at a roundabout with U.S. Highway 10 (US 10) just south of Marshfield, running south through the farmlands of Wood County before combining with WIS 73 and heading east for 2.5 miles (4.0 km) to Pittsville, where it turns south through town and comes within a few hundred yards of the geographic center of the state. South from Pittsville, the terrain is flat as WIS 80 passes along the Necedah National Wildlife Refuge, through the center of Necedah, and into New Lisbon just past the junction with Interstate 90/Interstate 94 (I-90/I-94). South of New Lisbon, it enters the Driftless Area with many rolling hills and curves. WIS 80 meets up with WIS 82 heading into Elroy, southern trailhead of the Elroy-Sparta Trail, and then to Union Center where WIS 33 also runs concurrently into Hillsboro. At Hillsboro, WIS 33/WIS 82 heads west and WIS 80 continues south into Richland County, through Hub City and into Richland Center.^[1]

WIS 80 crosses the Wisconsin River into Muscoda,^[1] which bills itself as the "Morel mushroom capital of Wisconsin".^{[citation needed]} WIS 133 joins WIS 80 east five miles (8.0 km) before WIS 80 heads south again to Highland and Cobb, where the land continues to be hilly but becomes less forested and more rolling farmland. At Cobb, WIS 80 follows US 18 west for five miles (8.0 km) before heading south along the Iowa–Grant county line past Livingston and into Platteville, where it meets WIS 81 in town and US 151 south of town at the freeway bypass. South of Platteville, WIS 80 occasionally aligns itself along the Grant–Lafayette county line as it heads through Cuba City and Hazel Green, where WIS 11 joins for a few miles. South of Hazel Green, WIS 80 ends at the Illinois state line, where it meets Illinois Route 84 (IL 84) one-half mile (0.80 km) west of the state's "Point of Beginning",^[1] the location from which most public land surveys in Wisconsin originated.^{[citation needed]}

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