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Press Releases

Interstate 229 Northbound Temporary Lane Closure Scheduled at Cliff Avenue (Exit 4) in Sioux Falls

Beginning at 7 p.m. on Tuesday, Sept. 23, 2025, the northbound lanes of Interstate 229 will be temporarily closed. Read More

Electrical Conduit Repair Scheduled to Begin on I-90 at Exits 10, 14, and 58 (Rapid City Region)

On Monday, Sept. 22, 2025, work will begin to repair conduit attached to the Interstate 90 bridges at exit 10 (Belle Fourche/Spearfish), exit 14 (Spearfish), and exit 58 (Rapid City/Haines Avenue). Read More

Construction Project Scheduled to Begin on U.S. Highway 16A East of Custer

Beginning on Monday, Sept. 29, 2025, a road construction project is scheduled to begin on U.S. Highway 16A near Custer. Read More

S.D. Highway 25 Scheduled to Close for Grading Work in Clark County

On Monday, Sept. 15, 2025, S.D. Highway 25 in Clark County will be closed from S.D. Highway 20 north for three miles. Read More

Temporary Lane Closure Scheduled for Minnesota Avenue at Interstate 229 in Sioux Falls

Beginning at 9 a.m. on Monday, Sept. 15, 2025, the northbound outside lane of Minnesota Avenue will be temporarily closed between the Interstate 229 northbound on-ramp and the I-229 southbound off-ramp in Sioux Falls. Read More

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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

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

National Work Zone Awareness Week (NWZAW) April 15-19, 2024

NWZAW has been observed for more than 20 years and was launched as a public awareness campaign to help everyone understand that they play a role in keeping motorists and roadway workers safe. Read More