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Traffic Switch Planned on Northbound I-29 in Sioux Falls as On-Ramp Reopens at 26th Street

On Monday, June 16, 2025, the northbound Interstate 29 on-ramp at 26th Street will be reopened. As structure work continues, northbound traffic on I-29 over the Skunk Creek Bridge will be switched and maintained in the two east lanes. Read More

Pavement Restoration Project to Begin in Lead, Deadwood, and Rapid City

Pavement Restoration Project to Begin in Lead, Deadwood, and Rapid City Read More

SDDOT Seeks Public Input for Environmental Assessment for I-90 (Exits 61-67) Near Box Elder

The South Dakota Department of Transportation (SDDOT), in collaboration with the Federal Highway Administration (FHWA), will hold an in-person public meeting open house on Wednesday, June 18, 2025, from 5-7 p.m. (MT). Read More

Multiple Chip Seal and Fog Seal Projects Scheduled to Begin in the Mitchell Area

On Monday, June 9, 2025, two separate crews will begin simultaneous work on chip seal and fog seal projects on various highways in the Mitchell area. Read More

SDDOT Seeks Public Input for Sidewalk and ADA Improvement Project in Lemmon

The South Dakota Department of Transportation (SDDOT) will hold a public meeting open house on Wednesday, June 25, 2025, from 5:30 – 7 p.m. (MT) to inform area residents of the proposed sidewalk and ADA improvement project in Lemmon. Read More

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

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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)
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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