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Press Releases
Mobridge Area Project Resuming on U.S. Highway 12 and S.D. Highway 1806
On Monday, May 4, 2026, paving operations are beginning for the multi-year project on U.S. Highway 12 from Mobridge to the west approximately 14 miles. Read MoreShoulder Widening Project Scheduled to Begin on S.D. Highway 10 near Britton
Shoulder Widening Project Scheduled to Begin on S.D. Highway 10 near Britton Read MoreShoulder Widening Project Scheduled to Begin on S.D. Highway 10 near Britton
On Monday, May 4, 2026, a shoulder widening project is scheduled to begin on S.D. Highway 10, west of Britton. The contractor will set signs, strip topsoil, and begin shoulder widening operations from Britton, working west three miles. Read MoreCenterline Rumble Stripe Projects Scheduled to Begin in Rapid City Region
Beginning Tuesday, April 28, 2026, crews will begin installing centerline rumble stripes and performing crack sealing on multiple highways throughout the Rapid City region. Read MoreAsphalt Paving Project Scheduled to Begin on U.S. Highway 16A in Custer State Park
Beginning Tuesday April 21, 2026, an asphalt paving project is scheduled to begin on U.S. Highway 16A in Custer State Park over pipe and box culvert replacement areas that have been completed. Read MoreS.D. Highway 25 Closure Planned for Grading Project Near Bradley
On Tuesday, April 21, 2026, crews will begin grading work on S.D. Highway 25 from S.D. Highway 20 north for approximately four miles. Read MoreProject Scheduled to Begin on U.S. Highway 212 between Eagle Butte and La Plant
On Monday, April 20, 2026, a project is scheduled to begin on U.S. Highway 212 from just east of Eagle Butte to La Plant. 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/
National Work Zone Awareness Week April 20-24, 2026
Friday, April 17, 2026, at 2:00 p.m. (CT)
Safe Actions Save Lives: SDDOT 2026 Construction Season Kickoff Webinar Registration
2026 Planned Construction Map
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Meetings & Events
Transportation Commission Meeting 05/28/2026
5/28/2026 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 Boards and Commissions.
View DetailsTransportation Commission Meeting 06/11/2026
6/11/2026 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 Boards and Commissions.
View DetailsRailroad Board & Authority Meeting 06/17/2026
6/17/2026 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
View DetailsAeronautics Commission Meeting 06/18/2026
6/18/2026 1:00 PM MT / 2:00 PM CT
The agenda and corresponding attachments for the meeting, as well as additional information about the Commission, can be found here:
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