Sweet Grass, Montana

Sweet Grass (also Sweetgrass) is an unincorporated community in Toole County, Montana, United States. It is on the Canada-United States border. It is the northern end of Interstate 15. Interstate 15 is an important route connecting western Canada, the western United States, and Mexico.
In 2004, a joint border facility opened at the Sweetgrass port of entry and Coutts, Alberta. It has both Canadian and American federal authorities.