Live Chat I-90 Community Nearby Traffic Cooper Dam (Water dam) 2024-09-25 Roadnow Weather | Gas | Restaurants | Hotels | Car Repair | Convenience Stores Cities close to Cooper Dam (Water Dam) Wyola, MT 15.06 Dayton, WY 19.26 Ranchester, WY 20.52 Interstate highway exits close to Cooper Dam (Water Dam) Exit 1, i90 8.97 Exit 549, i90 12.94 Exit 9, i90 19.07 Interstate highways close to Cooper Dam (Water Dam) i90 map 8.97 i25 map 84.83 i94 map 124.81 State roads close to Cooper Dam (Water Dam) WY 345 map 4.95 WY 343 map 7.61 US 87 MT map 12.52