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Traffic Signals at U.S. Highway 212 and 33rd Street SE in Watertown to be Set for Flashing Operation Mode
Beginning Tuesday, April 7, 2026, the traffic signals located at U.S. Highway 212 and 33rd Street SE in Watertown will be set to a flashing yellow/red operation mode. Read MoreTurn Lane Project Scheduled to Begin on U.S. Highway 85 and Crook City Road in Spearfish
Beginning Tuesday, April 7, 2026, crews will begin constructing left-turn lanes on U.S. Highway 85 at Crook City Road, located south of Interstate 90 (exit 17) in Spearfish. Read MoreSDDOT Seeks Public Input on Reconstruction of S.D. Highway 48 and 50 Interchanges with I-29 in Union County
The South Dakota Department of Transportation (SDDOT) will hold a public meeting open house on Tuesday, April 14, 2026, from 5:30 – 6:30 p.m. (CT) to discuss and receive public input on the proposed reconstruction of the S.D. Highway 48 and S.D. Highway 50 interchanges with Interstate 29 in Union County. The public meeting open house will be held at the Vermillion Fire EMS Department, located at 820 N. Dakota St. in Vermillion. Read MoreBridge Repair Projects to Begin on S.D. Highway 47 at White River and S.D. Highway 53 at Willow Creek in Winner Area
On Monday, April 6, 2026, a bridge repair project is scheduled to begin on the White River Bridge on S.D. Highway 47. Read MoreU.S. Highway 16A in Custer State Park Scheduled to Reopen
Beginning Friday, April 3, 2026, the two-mile closure on U.S. Highway 16A in Custer State Park will reopen to traffic. Read MoreSouth Dakota Transportation Hall of Honor Committee Accepting 2026 Nominations
The committee seeks nominees who have gained the admiration of their peers and earned distinction in the transportation field. Read MoreElizabeth Street Scheduled to Close for City Utility Work and Reconstruction of S.D. Highway 1889 (Euclid Avenue) in Pierre
On Wednesday, April 1, 2026, Elizabeth Street, between Euclid Avenue and Grand Avenue, is scheduled to close to accommodate placement of city utilities and reconstruction of the street. Read MoreFeatured Resources
Notice of Public Hearing:
Pursuant to the authority vested in the South Dakota Transportation Commission by South Dakota Codified Law chapter 1-26, the Transportation Commission will hold a public hearing in the Commission Room of the Becker Hansen Building at 700 E. Broadway Ave. in Pierre, on Thursday, April 23, 2026, at 9 a.m. (CT) to consider amendments to Administrative Rule of South Dakota numbered: 70:01:02:44 – Lincoln County speed zone rule
The South Dakota Transportation Commission is considering whether to reduce the speed limit on South Dakota Highway 115 around its intersection with South Veterans Parkway in Lincoln County, South Dakota. The current speed limit in that area is fifty-five miles per hour, but a reduced speed limit would be more appropriate in this urban area. The purpose of reducing the speed limit is to enhance safety.
View here: https://rules.sd.gov/
2026 Planned Construction Map
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Meetings & Events
Transportation Commission Meeting 04/09/2026
4/9/2026 8:00 AM MT / 9:00 AM CT
The agenda and corresponding attachments for the meeting, as well as additional information about the Commission, can be found here:
View DetailsTraffic Incident Management System (TIMS) – Sioux Falls, SD – 4/9/26
4/9/2026 5:30 PM MT / 6:30 PM CT
This training provides instruction on safe, efficient, and coordinated response to traffic incidents. The course emphasizes responder safety, quick incident clearance, and effective interagency communication to reduce risks and restore normal traffic operations as quickly as possible.
View DetailsInterstate 29 - Exit 26, S.D. Highway 50, and Exit 31, S.D. Highway 48 Interchanges over I-29 Public Meeting
4/14/2026 4:30 PM MT / 5:30 PM CT
The South Dakota Department of Transportation (SDDOT) will hold a public meeting open house to discuss and receive public input on the above project. A short presentation will take place at 5:30 p.m.
View DetailsRailroad Board & Authority Meeting 04/15/2026
4/15/2026 10:00 AM MT / 11:00 AM CT
The agenda and corresponding attachments for the meeting, as well as additional information about the Board, can be found here Boards and Commissions.
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