U.S. Route 87
Overview
 
U.S. Highway 87 is a north–south United States highway (though it is signed east–west in New Mexico
New Mexico
New Mexico is a state located in the southwest and western regions of the United States. New Mexico is also usually considered one of the Mountain States. With a population density of 16 per square mile, New Mexico is the sixth-most sparsely inhabited U.S...

) that runs for 1,998 miles (3,215 km) from northern Montana
Montana
Montana is a state in the Western United States. The western third of Montana contains numerous mountain ranges. Smaller, "island ranges" are found in the central third of the state, for a total of 77 named ranges of the Rocky Mountains. This geographical fact is reflected in the state's name,...

 to southern Texas
Texas
Texas is the second largest U.S. state by both area and population, and the largest state by area in the contiguous United States.The name, based on the Caddo word "Tejas" meaning "friends" or "allies", was applied by the Spanish to the Caddo themselves and to the region of their settlement in...

. Most of the portion from Billings, Montana
Billings, Montana
Billings is the largest city in the U.S. state of Montana, and is the principal city of the Billings Metropolitan Area, the largest metropolitan area in over...

, to Raton, New Mexico
Raton, New Mexico
Raton is a city in Colfax County, New Mexico, United States. The population was 7,282 at the 2000 census. It is the county seat of Colfax County. The city is located just south of Raton Pass.-Name:...

, is co-signed along Interstates 90
Interstate 90
Interstate 90 is the longest Interstate Highway in the United States at . It is the northernmost coast-to-coast interstate, and parallels US 20 for the most part. Its western terminus is in Seattle, at Edgar Martinez Drive S. near Safeco Field and CenturyLink Field, and its eastern terminus is in...

 and 25
Interstate 25
Interstate 25 is an Interstate Highway in the western United States. It is primarily a north–south highway. I-25 stretches from Interstate 10 at Las Cruces, New Mexico, , to Interstate 90 in Buffalo, Wyoming, .Interstate 25 is the main north–south expressway through...

. It is also co-signed along the majority of Interstate 27
Interstate 27
Interstate 27 is an intrastate Interstate Highway, located entirely in the U.S. state of Texas, running north from Lubbock to Interstate 40 in Amarillo. These two cities are the only control cities on I-27; other cities and towns served by I-27 include New Deal, Abernathy, Hale Center, Plainview,...

 in Texas.

As of 2004, the highway's northern terminus is Havre, Montana
Havre, Montana
Havre is a city in, and the county seat of, Hill County, Montana, United States. It is said to be named after the city of Le Havre in France. The population was 9,621 at the 2000 census.-History:...

, at U.S. Highway 2. Its southern terminus is Port Lavaca, Texas
Port Lavaca, Texas
Port Lavaca is a city in Calhoun County, Texas, United States. The population was 12,248 at the 2010 census. The County had a 3.6% growth which brought the county population to 21,381. The city itself is bringing in more business into the area. It is the county seat of Calhoun County...

.
US 87 continues in a northwesterly direction in New Mexico
New Mexico
New Mexico is a state located in the southwest and western regions of the United States. New Mexico is also usually considered one of the Mountain States. With a population density of 16 per square mile, New Mexico is the sixth-most sparsely inhabited U.S...

, and is signed by NMDOT primarily as an east–west route.
 
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