There is only one exit along I-90 in Broadwater County, linking MT 2 in the south and US 287 north of the highway before crossing the Broadwater-Gallatin County border at the Missouri River. I-90 parallels S-205, bypassing the towns of Trident, Logan, Manhattan and Belgrade on the north of the highway. A new interchange was constructed just east of Belgrade (Exit #299)that services Bozeman Yellowstone International Airport to the north and the western area of the city of Bozeman. MT 85 travels south from I-90 in Belgrade, providing access to Bozeman Hot Springs. The highway then enters the city of Bozeman, the county seat, and intersects and becomes concurrent with US 191. I-90 exits the county at the Gallatin-Park County border at high Bozeman Pass. US 89 intersects I-90 in the county seat of Livingston, and passing over the Yellowstone River. The highway continues northeasterly, paralleling the river, intersecting S-295 before crossing the Park-Sweet Grass County border.