Live Chat I-90 Community Nearby Traffic US 81 SD 2024-05-29 Roadnow Weather | Gas | Restaurants | Hotels | Car Repair | Convenience Stores Cities close to US 81 SD Mission Hill, SD 11.73 Saint Helena, NE 13.17 Utica, SD 15.18 Interstate highway exits close to US 81 SD Exit 31, i29 50.21 Exit 38, i29 50.61 Exit 26, i29 51.74 Interstate highways close to US 81 SD i29 map 50.21 i229sd map 83.72 i90 map 86.59 State roads close to US 81 SD US 81 SD map 1.04 US 81 NE map 3.01 NE 12 map 17.80