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Detour Route Planned for S.D. Highway 37 North of Mitchell

Beginning on Monday, April 14, 2025, traffic on S.D. Highway 37 will be detoured onto Minnesota Street and 23rd Avenue, north of Mitchell. Read More

SDDOT Seeks Public Input for Northshore Drive Realignment Project in North Sioux City

he South Dakota Department of Transportation (SDDOT) will hold a public meeting open house on Tuesday, April 15, 2025, from 5:30 to 7 p.m. (CT) at the North Sioux City Community Center, located at 205 Sodrac Dr. Read More

SDDOT Seeks Public Input into the I-90/S.D. Highway 38 Corridor Study

The South Dakota Department of Transportation (SDDOT), in collaboration with the City of Hartford, City of Humboldt, City of Sioux Falls, Minnehaha County, Sioux Falls MPO, and the Federal Highway Administration, will hold a public meeting open house on Monday, April 7, 2025, from 6 p.m. to 7:30 p.m. at West Central High School, located at 705 E. 2nd St. in Hartford. Read More

Structure Work Scheduled on Interstate 29 over 12th Street in Sioux Falls

On Monday, April 7, 2025, work will begin on the Interstate 29 northbound structures over 12th Street and the Ellis & Eastern Railroad tracks. Read More

Structure Work Scheduled on Interstate 90 over Interstate 29 in Sioux Falls

On Monday, April 7, 2025, work will begin on the Interstate 90 eastbound structure over Interstate 29. Read More

SDDOT Seeks Public Input for Proposed Reconstruction Project on S.D. Highway 49 in Colome

The South Dakota Department of Transportation (SDDOT) will hold a public meeting open house on Thursday, April 10, 2025, for the proposed reconstruction project on S.D. Highway 49 in Colome. Read More

Pipe Repair Work to Begin on S.D. Highway 79 Near Reva

BELLE FOURCHE, S.D. – On Monday, April 7, 2025, pipe repair work will begin on S.D. Highway 79 north of Reva. Read More

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Featured Resources

Condensed External Winter Highway Maintenance Plan

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2025-2028 Statewide Transportation Improvement Program (STIP)
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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