U.S. Route 185 in Wyoming

U.S. Route 87
Route information
Length:	1,998 mi (3,215 km)
Existed:	1926 – present
Major junctions
South end:	SH 238 in Port Lavaca, TX
	I‑35 at San Antonio, TX I‑10 from San Antonio to Comfort, TX I‑20 at Big Spring, TX I‑27 from Lubbock to Amarillo, TX I‑40 at Amarillo, TX I‑25 from Raton, NM to Buffalo, WY I‑70 / I‑76 at Denver, CO I‑80 at Cheyenne, WY I‑90 from Buffalo, WY to Billings, MT I‑15 in Great Falls, MT
North end:	US 2 at Havre, MT
Location
States:	Texas, New Mexico, Colorado, Wyoming, Montana
Highway system
United States Numbered Highway System List Special Divided Replaced

U.S. Highway 87 is a north–south United States highway (though it is signed east–west in New Mexico) that runs for 1,998 miles (3,215 km) from northern Montana to southern Texas. Most of the portion from Billings, Montana, to Raton, New Mexico, is co-signed along Interstates 90 and 25. It is also co-signed along the majority of Interstate 27 in Texas.

As of 2004, the highway's northern terminus is Havre, Montana, at U.S. Highway 2. Its southern terminus is Port Lavaca, Texas.

US 87 continues in a northwesterly direction in New Mexico, and is signed by NMDOT primarily as an east–west route. It merges with US 64 (and thus the Santa Fe Trail National Scenic Byway) in Clayton, shortly after entering New Mexico. It continues to the northwest until Des Moines, when it takes a more westerly approach to Raton. In Raton, it separates from US 64 and merges with Interstate 25 and US-85, with which it remains concurrent through Raton Pass and into Colorado, though it is unsigned on much of the concurrency.

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Wikipedia