Live Chat I-90 Community Nearby Traffic US 18 SD 2024-05-23 Roadnow Weather | Gas | Restaurants | Hotels | Car Repair | Convenience Stores Cities close to US 18 SD Delmont, SD 16.31 Corsica, SD 16.63 Ravinia, SD 19.37 Interstate highway exits close to US 18 SD Exit 310, i90 44.30 Exit 319, i90 44.32 Exit 308, i90 46.02 Interstate highways close to US 18 SD i90 map 44.30 i29 map 126.23 i229sd map 128.06 State roads close to US 18 SD US 281 SD map 0.96 US 18 SD map 6.73 US 281 NE map 48.39