Live Chat I-90 Community Nearby Traffic I 90 exit 390 2024-04-26 Roadnow Weather | Gas | Restaurants | Hotels | Car Repair | Convenience Stores Cities close to I-90 Exit 390 Humboldt, SD 9.96 Buffalo Ridge, SD 12.47 Crooks, SD 12.77 Interstate highway exits close to I-90 Exit 390 Exit 387, i90 0.74 Exit 390, i90 5.12 Exit 379, i90 11.32 Interstate highways close to I-90 Exit 390 i90 map 0.74 i29 map 14.86 i229sd map 18.94 State roads close to I-90 Exit 390 US 81 SD map 34.78 US 18 SD map 37.11 IA 9 map 38.18