Live Chat I-90 Community Nearby Traffic I 90 exit 400 2024-03-29 Roadnow Weather | Gas | Restaurants | Hotels | Car Repair | Convenience Stores Cities close to I-90 Exit 400 Greycliff, MT 18.41 Absarokee, MT 21.09 Columbus, MT 24.36 Interstate highway exits close to I-90 Exit 400 Exit 392, i90 0.34 Exit 396, i90 7.36 Exit 384, i90 10.76 Interstate highways close to I-90 Exit 400 i90 map 0.34 i94 map 90.01 i15 map 206.06 State roads close to I-90 Exit 400 MT 78 map 21.35 MT 298 map 34.28 US 191 MT map 34.51