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Temporary Traffic Devices and Speed Reductions to be Placed During Sturgis Motorcycle Rally

The 85th Annual Sturgis Motorcycle Rally is scheduled for Aug. 1-10, 2025. Due to the increased traffic volumes expected during the annual Rally, the South Dakota Department of Transportation (SDDOT) will activate temporary traffic adjustments. Read More

Intersection of Capitol Avenue and Euclid Avenue Closing for Asphalt Surfacing in Pierre

On Thursday, July 24, 2025, crews will begin final asphalt surfacing on Euclid Avenue between Pleasant Drive through Capitol Avenue in Pierre. Read More

Cold Milling and Asphalt Resurfacing to Begin on S.D. Highway 1806 in Pierre

On Thursday, July 24, 2025, crews will begin asphalt milling and resurfacing on S.D. Highway 1806 between the junction of U.S. Highway 14 and Highway 1806 to the west end of the Oahe Dam (S.D. Highway 204). Read More

Lane Closure Scheduled for Eastbound Interstate 90 Over Interstate 229 in Sioux Falls

Beginning on Wednesday, July 23, 2025, the Interstate 90 eastbound passing lane on the bridge over Interstate 229 in Sioux Falls will be temporarily closed. Read More

Chip Seal and Fog Seal Projects Planned in the Mitchell Area

Beginning on Wednesday, July 23, 2025, chip seal and fog seal applications will be applied to several highways in the Mitchell surrounding area. Read More

Rockfall Mitigation Project Scheduled to Begin on U.S. Highway 14A in Spearfish Canyon

On Tuesday, July 22, 2025, crews will begin a rockfall mitigation project on U.S. Highway 14A in Spearfish Canyon. Read More

Lane Closure Scheduled for Minnesota Avenue at Interstate 229 in Sioux Falls

Beginning at 8:30 a.m. on Wednesday, July 16, 2025, the northbound outside lane of Minnesota Avenue will be closed between the Interstate 229 northbound on-ramp and the I-229 southbound off-ramp. Read More

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Updated Move Over Law in South Dakota

South Dakota’s updated Move Over Law became effective as of Tuesday, July 1, 2025. The updated law now applies to all vehicles occupying the shoulder using amber, yellow, or blue warning lights. Read More

Diverging Diamond Interchange

The LaCrosse Street Diverging Diamond Interchange (DDI) in Rapid City and the 41st Street DDI in Sioux Falls were designed to enhance safety and address future travel needs in high volume intersections within two communities experiencing population growth. The DDI design improves safety by reducing vehicle conflict points. Read More

Make our Roads Safer: We challenge you. Buckle Up, Phone Down!

South Dakota is one of 28 states that participate in the Buckle Up Phone Down (BUPD) safety campaign. The Buckle Up Phone Down challenge is simple: when you get into any vehicle, buckle up your seatbelt. If you are a driver, put the cell phone down. Turn it off if you have to. Every trip, every time! Read More

2024 South Dakota Strategic Highway Safety Plan (SHSP)

The 2024 South Dakota Strategic Highway Safety Plan (SHSP) details a vision for highway safety in South Dakota and outlines interim objectives to progress toward a safer transportation system. Throughout the Plan, there are many informative graphics that help illustrate the importance of highway safety. Read More