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Ramp Reconstruction Work Scheduled on Interstate 90 Near Vivian

On Tuesday, April 22, 2025, work is scheduled to begin on the eastbound and westbound ramps at exit 214 on Interstate 90 east of Vivian. Read More

Structure Work Scheduled on Interstate 29 at 26th Street in Sioux Falls

On Monday, April 21, 2025, work is scheduled to begin on the Interstate 29 northbound structure over Skunk Creek in Sioux Falls. Read More

Interstate 90 Exit 10 (Spearfish) Eastbound Off-Ramp Closure Scheduled

On Monday, April 28, 2025, work will begin to install a High Friction Surface Treatment (HFST) to the Interstate 90 exit 10 (Spearfish) eastbound off-ramp and bridge. Read More

S.D. Highway 25 Closure Scheduled for Grading Project Near Bradley

On Monday, April 21, 2025, crews will begin grading on S.D. Highway 25 near Bradley from the junction of S.D. Highway 20 to the south for six miles. Read More

Signals at Crazy Horse Memorial and Oreville Junction to be Activated in Custer

Beginning Monday, May 5, 2025, traffic signals at Crazy Horse Memorial and U.S. Highway 16/S.D. Highway 244 at Oreville Junction will once again be activated for the summer tourist season. Read More

Bridge Repairs Scheduled to Begin on Interstate 90 West of Sturgis

On Tuesday, April 15, 2025, repair work is scheduled to begin on eastbound and westbound bridge decks and approach slabs on Interstate 90 approximately three miles west of Sturgis. Read More

Lane Closures Scheduled on U.S. Highway 18 and S.D. Highway 407 Reconstruction Project in Pine Ridge

Traffic lane closures are scheduled to begin on Monday, April 14, 2025, for the north and south section of Highway 18 and Highway 407 from Cherry Hill Court to Whitetail Deer Road. Read More

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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