Interstate 94 (I-94) is an east–west Interstate Highway, which links Billings, Montana, to the Canada–US border in Port Huron, Michigan. The portion in the US state of Montana is long, linking seven counties through the central part of the state. The speed limit has been since January 2016, except near Billings where it is . Route description Yellowstone County I-94 starts in Yellowstone County in Billings at I-90 and travels northeast to the towns of Huntley, Ballantine, Pompeys Pillar, and Custer. Treasure, Rosebud, and Custer counties Entering Treasure County, I-94 passes near the small towns of Bighorn and Hysham; there is a little ranch access at milemarker 63.01. After entering Treasure County, the next county is Rosebud County, about east. There are two intersections of US Highway 12 (US 12) and Montana Highway 59 (MT 59) before entering Forsyth, after that is Custer County which is the east end of US 12 after crossing the city of Miles City. Prairie, Dawson, and Wibaux counties After entering Prairie County after passing the small towns of Terry and Fallon, the next county is Dawson County, entering the cities of Glendive which connects with MT 16 and entering the city of Wibaux before entering the North Dakota state line. History Exit list References Montana 94 Transportation in Yellowstone County, Montana Transportation in Treasure County, Montana Transportation in Rosebud County, Montana Transportation in Custer County, Montana Transportation in Prairie County, Montana Transportation in Dawson County, Montana Transportation in Wibaux County, Montana