Live Chat I-90 Community Nearby Traffic United States Post Office (Amenity postoffice) 2024-05-19 Roadnow Weather | Gas | Restaurants | Hotels | Car Repair | Convenience Stores Cities close to United States Post Office (Amenity Postoffice) Ellsworth AFB, SD 2.98 Rapid City, SD 9.57 New Underwood, SD 21.94 Interstate highway exits close to United States Post Office (Amenity Postoffice) Exit 67, i90 1.12 Exit 63, i90 4.44 Exit 61, i90 7.47 Interstate highways close to United States Post Office (Amenity Postoffice) i90 map 1.12 i25 map 236.88 i94 map 307.84 State roads close to United States Post Office (Amenity Postoffice) US 14 SD map 0.63 US 16 SD map 13.70 US 385 SD map 34.18