SIOUX FALLS, S.D. (KELO) — The South Dakota Department of Transportation has 394 full-time snow plows, 23 road graders with V-plows, 105 snow blowers, 26 tow plows and 51 spare snow plows. Wh… ...

The Interstate 90 speed limit will drop from 75 mph to 65 mph from west of exit 55 (Deadwood Avenue) in Rapid City to west of ...

The South Dakota Department of Transportation is inviting the public to provide input on the proposed replacement of two bridges on S.D. Highway 44 near Cliffside Park in Rapid City.

Public meetings are now set for SDDOT’s 2026 work plan by: Bob Mercer Posted: Jun 26, 2025 / 12:49 PM CDT Updated: Jun 26, 2025 / 12:49 PM CDT ...