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Press Releases

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

On Tuesday, April 7, 2026, S.D. Highway 46 from the east edge of the City of Beresford to 297th Street (Hudson Curve) is scheduled to close to complete the surfacing portion of the project. Read More

Reconstruction Project on I-229 Near Cliff Avenue (Exit 4) Resumes in Sioux Falls

Beginning Monday, March 30, 2026, lane closures will be in place for southbound traffic on I-229 to allow crews to install traffic control devices, concrete barriers, and pavement markings for two-way traffic in the southbound lanes. Read More

2026 Spring Load Limit Restrictions – Press Release #2

(Restrictions scheduled for REMOVAL the week of March 23 – 27, 2026) Read More

Construction Scheduled to Resume on S.D. Highway 46 Project through Wagner

On Wednesday, March 18, 2026, construction work is scheduled to resume on S.D. Highway 46 through the town of Wagner. Work on phase two of the project includes rebuilding the roadway and storm sewer from Grant Avenue SE to the west end of the Wagner City limits. Read More

Interstate 29 and Interstate 90 Reopened - Sunday, March 15, 2026

(Winter Storm Release #2) Read More

Interstate 29 and Interstate 90 Closures Scheduled for Saturday, March 14, 2026 (Winter Storm Release #1)

Interstate 29 and Interstate 90 Closures Scheduled for Saturday, March 14, 2026 (Winter Storm Release #1) Read More

Public Information Meeting Scheduled as Grading Project Resumes on S.D. Highway 73 South of Kadoka

On Thursday, March 26, 2026, the South Dakota Department of Transportation (SDDOT) will be hosting a public informational meeting at 5:30 p.m. (MT) to share information as the multi-year reconstruction project resumes on S.D. Highway 73 south of Kadoka. 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