State Trunk Highway 87 (often called Highway 87, STH-87 or WIS 87) is a state highway in Polk and Burnett counties in the US state of Wisconsin that runs north–south in the northwestern portion of the state from St. Croix Falls to Grantsburg. It was first designated as a state highway in 1924.

Quick Facts State Trunk Highway 87, Route information ...

State Trunk Highway 87
WIS 87 highlighted in red
Route information
Maintained by WisDOT
Length	25.82 mi[1] (41.55 km)
Existed	1924–present
Major junctions
South end	US 8 in St. Croix Falls
Major intersections	WIS 48 in Anderson
North end	WIS 48 / WIS 70 in Grantsburg
Location
Country	United States
State	Wisconsin
Counties	Polk, Burnett
Highway system
Wisconsin State Trunk Highway System Interstate US State Scenic Rustic
← WIS 86 → WIS 88

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The highway begins at an intersection with US Highway 8 (US 8) in St. Croix Falls, just east of the St. Croix River. The highway runs north from the intersection, running along Washington Street in St. Croix. The highway then follows the St. Croix River until it curves to the west. Soon after, the highway swerves to the west and meets County Trunk Highway I (CTH-I), running north from it. It then passes through Eureka Center and a one-mile (1.6 km) concurrency with CTH-G before reaching Cushing, from where it runs one mile (1.6 km) to the west before continuing north. The highway then passes by a few lakes and the community of Trade River, and then runs east of Fish Lake Wildlife Area. While running east of the wildlife area, it runs concurrently with WIS 48. After the wildlife area's boundary ends, the highway passes through Branstad before terminating with WIS 48 at WIS 70 in Grantsburg.^[2]

In 1923, the highway in its entirety was signed as County Trunk Highway F (CTH-F).^[3] The next year, it was signed as WIS 87 alongside WIS 48, which it runs concurrently with near Grantsburg.^[4] The highway was unpaved along its entire route and would stay that way until at least 1956.^[5]

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