U.S. Route 287 in Montana

U.S. Highway 287
U.S. Highway 287
	US 287 highlighted in red
Route information
	Maintained by MDT
Length	281.183 mi (452.520 km)
Existed	1965–present
Tourist; routes	Lewis and Clark Trail
NHS	Section south of northern I-15 junction
Major junctions
South end	Yellowstone National Park east of West Yellowstone
	US 20 / US 191 in West Yellowstone; I-90 near Three Forks; US 12 from Townsend to Helena; I-15 from Helena to Wolf Creek; MT 200 near Milford Colony;
North end	US 89 in Choteau
Location
Country	United States
State	Montana
Counties	Gallatin, Madison, Jefferson, Broadwater, Lewis and Clark, Teton
Highway system
	United States Numbered Highway System; List; Special; Divided; Montana Highway System; Interstate; US; State; Secondary;

U.S. Route 287 (US 287) is a 281.183-mile (452.520 km) north-south U.S. Numbered Highway in Montana, United States, that connects Yellowstone National Park's West Entrance iwth to U.S. Route 89 in Choteau, about 100 miles (160 km) south of the Canadian border.

^ Road Inventory and Mapping Section (2019). Montana Road Log (PDF). Helena: Montana Department of Transportation. pp. 6–7, 72–74, 90, 179–181, 242. Archived from the original (PDF) on October 20, 2020. Retrieved December 29, 2020.