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SDDOT Providing Virtual and In-Person Engagement Opportunities for Tentative 2026-2029 STIP

The South Dakota Department of Transportation (SDDOT) will offer various virtual and in-person public engagement options for the Tentative 2026-2029 Statewide Transportation Improvement Program (STIP). All Tentative 2026-2029 STIP information is provided through a highly interactive, virtual meeting room on the SDDOT website at https://dot.sd.gov/projects-studies/planning/tentative-statewide-transportation-improvement-program-stip Read More

State Transportation Funding Allows Counties and Cities to Prioritize Local Transportation Needs

The South Dakota Department of Transportation (SDDOT) provided nearly $40 million in state highway funding to counties and Class I city governments in June 2025. The funds will be provided to the local governments in either state highway funds or through federal aid projects. Read More

Inslope Repair Project Scheduled to Begin on S.D. Highway 89 in Custer Area

On Monday, June 30, 2025, an inslope repair project is scheduled to begin on S.D. Highway 89 in the Custer area near Sylvan Lake. Read More

Work Scheduled to Begin on U.S. Highway 212/S.D. Highway 79 in Newell

On Thursday, June 26, 2025, crews will begin a sidewalk and ADA improvement project on Dartmouth Avenue (U.S. Highway 212/S.D. Highway 79) in Newell. Read More

Bridge Improvement Project Scheduled to Begin on U.S. Highway 14/U.S. Highway 281 Near Wolsey

On Monday, June 23, 2025, a bridge improvement project is scheduled to begin on U.S. Highway 14 and U.S. Highway 281 approximately two miles north of Wolsey over Cain Creek. Read More

Temporary Closure Scheduled on Interstate 190 in Rapid City

At 5 a.m. (MT) on Saturday, June 21, 2025, the final temporary closure on Interstate 190 and exit 57 in Rapid City is scheduled to take place. Both I-190 and exit 57 are scheduled to reopen on Sunday, June 22, 2025, at 8 p.m. (MT). Read More

Interstate 90 Lane Closures and Traffic Diversions Planned at Brandon

Beginning at 7 p.m. on Wednesday, June 25, 2025, the eastbound and westbound lanes on Interstate 90 at exit 406 (Brandon) will be temporarily closed for crews to set bridge girders. Read More

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Featured Resources

View Detailed Active Featured Construction Project Information
View All Planned 2025 Construction Projects
View the 2026-2029 Tentative STIP Materials and Meeting Room
- Tuesday, July 15, 2025, at 2 p.m. (CT). Virtual and in-person public meeting. Join us at your local region office. Zoom Meeting Registration Link
- Thursday, July 17, 2025, at 7 p.m. (CT). Virtual meeting - online only. Zoom Meeting Registration Link
Sign Up for Project Update Text Notifications
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

Rules adopted by the South Dakota Aeronautics Commission on June 12, 2025, concerning ARSD Chapter 70:02:04 – Airport Licensing, will be considered by the Interim Rules Review Committee on July 15, 2025. More information may be obtained at: 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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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