Live Chat I-43 Community Nearby Traffic Columbia Mills Dam (Water dam) 2024-05-27 Roadnow Weather | Gas | Restaurants | Hotels | Car Repair | Convenience Stores Cities close to Columbia Mills Dam (Water Dam) Grafton, WI 4.78 Mequon, WI 7.94 Thiensville, WI 9.84 Interstate highway exits close to Columbia Mills Dam (Water Dam) Exit 92, i43 6.56 Exit 89, i43 6.80 Exit 93, i43 7.10 Interstate highways close to Columbia Mills Dam (Water Dam) i43 map 6.56 i94 map 30.40 i90 map 98.15 State roads close to Columbia Mills Dam (Water Dam) WI 181 map 2.94 WI 32 map 6.46 WI 100 map 14.19