Live Chat I-90 Community Nearby Traffic US 18 SD 2024-05-13 Roadnow Weather | Gas | Restaurants | Hotels | Car Repair | Convenience Stores Cities close to US 18 SD Delmont, SD 18.06 Scotland, SD 18.95 Parkston, SD 19.07 Interstate highway exits close to US 18 SD Exit 344, i90 51.12 Exit 332, i90 52.78 Exit 335, i90 52.86 Interstate highways close to US 18 SD i90 map 51.12 i29 map 93.29 i229sd map 98.10 State roads close to US 18 SD US 18 SD map 2.39 US 281 SD map 32.78 US 81 SD map 42.74