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Road Closure Scheduled for S.D. Highway 46 Reconstruction Project Near Beresford

Beginning on Monday, March 31, 2025, S.D. Highway 46 will be closed to through traffic from S.D. Highway 11 to 297th Street (Hudson Curve). Read More

Closure Scheduled on S.D. Highway 38 for Bridge Approach Replacement Project Near Mitchell

On Monday, March 31, 2025, a bridge approach slab replacement project is scheduled to begin over the James River and Firesteel Creek Bridges on S.D. Highway 38 east of Mitchell. Read More

Bridge Replacement Project Scheduled to Begin on U.S. Highway 12 East of Mina

Beginning on Monday, April 7, 2025, a bridge replacement project is scheduled to begin over Snake Creek on U.S. Highway 12 east of Mina. Read More

Urban Reconstruction Project Scheduled to Begin on U.S. Highways 14/83 (Euclid Avenue) in Pierre

On Monday, March 31, 2025, the U.S. Highway 14/83 (Euclid Avenue) urban reconstruction project within the city of Pierre is scheduled to begin in multiple locations. Read More

Construction Scheduled to Resume on S.D. Highway 37 Near Mitchell

On Monday, March 24, 2025, construction work will resume on S.D. Highway 37 from the bridge at the Lake Mitchell Spillway through the intersection of Main Street and the S.D. Highway 37 Bypass. Read More

Construction Begins on S.D. Highway 73 Near Kadoka

On Monday, March 17, 2025, construction work began on S.D. Highway 73 from Kadoka to the south for eight miles. Read More

Lane Closures Scheduled on I-90 and Exit 406 at Brandon

On Monday March 24, 2025, lane closures will be placed on westbound Interstate 90 at Brandon (exit 406) as part of the Diverging Diamond Interchange (DDI) reconstruction project. Read More

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Featured Resources

Condensed External Winter Highway Maintenance Plan

Full External Winter Highway Maintenance Plan

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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2024 Annual Report

Many stories of collaboration and advancement are featured in the 2024 report ranging from new interchanges, public engagement improvements, a coordinated response to a natural disaster, and much more. 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

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

Centerline Rumble Strips (CLRS)

The South Dakota Department of Transportation (SDDOT) will begin to deploy Centerline Rumble Strips (CLRS) on rural roads with 500 or higher Average Daily Traffic (ADT) in order to further prevent head-on and sideswipe crashes. Read More