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Bridge Deck Replacement Scheduled to Begin Over I-90 on 459th Avenue Near Hartford

On Monday, June 9, 2025, crews will begin work on a bridge deck replacement over Interstate 90 on 459th Avenue near Hartford Read More

Additional Pavement Repair Projects Scheduled to Begin in the Southern Black Hills

Multiple pavement repair projects continue on various highways throughout the southern Black Hills. In conjunction with the current projects, additional pavement repair projects are also scheduled to begin on Monday, June 2, 2025. Read More

Closure Planned on Deadwood Avenue from Calamity Road to Meade County

On Monday, June 2, 2025, a closure is scheduled for Deadwood Avenue from Calamity Road to Meade County until Monday, Sept. 29, 2025. Read More

Planned Temporary Road Closures Scheduled for U.S. Highway 385 Between Clear Creek Road and Horse Creek Road

On Wednesday, May 28 and Thursday, May 29, 2025, controlled rock blasting will occur as part of the U.S. Highway 385 construction project. Read More

Bridge Repair Project Scheduled to Begin on U.S. Highway 212 Near La Plant

On Wednesday, May 21, 2025, repair work will begin on the Virgin Creek Bridge located on U.S. Highway 212 west of La Plant. Work on the project will consist of approach and guardrail replacement. Read More

Cliff Avenue Scheduled to Close at Interstate 229 in Sioux Falls

– Beginning Tuesday, May 27, 2025, Cliff Avenue will be closed to all traffic from north of the existing northbound Interstate 229 exit ramps to 38th Street in Sioux Falls. Read More

Chip Seal and Fog Seal Project Scheduled to Begin on U.S. Highway 12 Near Mobridge

Beginning Tuesday, May 27, 2025, crews will begin a chip seal and fog seal project on U.S. Highway 12 from Mobridge to three miles south of Selby, weather permitting. Read More

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Rules adopted by the Transportation Commission on May 29, 2025, will be considered by the Interim Rules Review Committee on June 10, 2025. Information about the proposed rules can be found at: https://rules.sd.gov/agency.aspx?agency=DOT%20%20Department%20of%20Transportation

The South Dakota Aeronautics Commission will be considering amendment or repeal of the following rules: ARSD Chapter 70:02:04 – Airport Licensing. The rules hearing date is Thursday, June 12, 2025, at 2:00 p.m. Central Time. https://rules.sd.gov/agency.aspx?agency=DOT%20%20Department%20of%20Transportation

On June 26, 2025, the Transportation Commission will consider amendments to Administrative Rule of South Dakota 70:01:02:03 – Brown County speed zone rule. https://rules.sd.gov/agency.aspx?agency=DOT%20%20Department%20of%20Transportation

2025-2028 Statewide Transportation Improvement Program (STIP)
Learn about the South Dakota EV Fast Charging Plan
Highway Needs and Project Analysis Report (Needs Book) 2022 - Interactive Map - (under pavement management products)

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New Move Over Law in South Dakota

South Dakota’s new 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