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Traffic Switch Scheduled on Interstate 90 at Exit 357 Near Bridgewater

On Monday, April 28, 2025, a two-way traffic configuration will be placed on the eastbound lanes of at exit 357 on Interstate 90 near Bridgewater/Canova. Read More

Structure Work Scheduled on Interstate 90 East of Mitchell

On Monday, April 28, 2025, work is scheduled to begin on the Interstate 90 eastbound and westbound structures over Riverside Road (exit 325) and Wolf Creek (one mile east of exit 350). Read More

Ramp Closures on Interstate 90 at Exit 390 Scheduled Near Hartford

The Interstate 90 eastbound on- and off-ramps and the westbound on-ramp at exit 390 are scheduled to be closed during the morning hours on Monday, April 28, 2025. Read More

Interstate 90 Rest Area at Chamberlain Reopened to Public Following Remodel

As of Wednesday, April 23, 2025, the Chamberlain Rest Area located on Interstate 90 has been reopened after a scheduled project was completed to remodel the facility. Read More

Glacial Lakes and Whetstone Valley Rest Areas Temporarily Closing for Annual Cleaning

The Glacial Lakes (Rosholt) Rest Area on Interstate 29 will be temporarily closing on Tuesday, April 29, 2025, at 6 a.m. CT for annual spring cleaning. Read More

Planned Road Closure Scheduled for U.S. Highway 385 in Custer Area

On Monday, April 28, 2025, a complete road closure is scheduled to begin on U.S. Highway 385 between Be Still Road and Calumet Road in the Custer area. Read More

S.D. Highway 37 and S.D. Highway 46 Intersection Project Begins in Bon Homme County

Work has begun on the S.D. Highway 37 and S.D. Highway 46 intersection lighting and signing project in Bon Homme County. Read More

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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