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Press Releases
Closure Scheduled on S.D. Highway 11 Near Canton for Railroad Crossing Improvement Project
Beginning at 7 a.m. on Tuesday, Sept. 8, 2026, a closure is scheduled on S.D. Highway 11 near Canton for replacement of the railroad crossing one-half mile north of U.S. Highway 18. Read MoreInslope Repair to Begin on U.S. Highway 14A Near Broken Boot Gold Mine Southwest of Deadwood
Beginning on Tuesday, Sept. 8, 2026, a project is scheduled to repair the inslope adjacent to Deadwood Creek and to replace a pipe on U.S. Highway 14A at the Broken Boot Gold Mine southwest of Deadwood. Read MoreSDDOT Seeks Public Comment on Draft Section 4(f) De Minimis Evaluation for Proposed Project on S.D. Highway 15 in Deuel County
The South Dakota Department of Transportation (SDDOT) has proposed a project to reconstruct S.D. Highway 15 from Clear Lake to the junction of U.S. Highway 212 to increase the shoulder width, re-establish ditch section, and flatten out deficient vertical curves. Section 4(f) of the Department of Transportation Act of 1966 (49 U.S.C. 303) requires a special effort be made to preserve the natural beauty of the countryside and public and recreation lands, wildlife and waterfowl refuges, and historic sites. Read MoreTransportation Commission Awards Funding for Forty Local Bridge Projects
The South Dakota Transportation Commission awarded funding for forty local bridge projects totaling approximately $3.5 million at their regularly scheduled meeting in Pierre on Thursday, Aug. 27, 2026. Read MoreTraffic Signal Improvement Project Scheduled for Sioux Avenue and Pierre Street Intersection in Pierre
From 7 a.m. to 5 p.m. on Sunday, Aug.30, 2026, the traffic signals at the intersection of U.S. Highway 14 (Sioux Avenue) and S.D. Highway 1889 (Pierre Street) will be temporarily turned off while a new traffic signal cabinet is installed. Read MoreSDDOT Seeks Public Comment on Draft Section 4(f) De Minimis Evaluation for Proposed Project on U.S. Highway 385 in Lawrence County
The South Dakota Department of Transportation (SDDOT) has proposed a project to reconstruct a horizontal curve on U.S. Highway 385 located four miles south of U.S. Highway 85 in Lawrence County. Section 4(f) of the Department of Transportation Act of 1966 (49 U.S.C. 303) requires a special effort be made to preserve the natural beauty of the countryside and public and recreation lands, wildlife and waterfowl refuges, and historic sites. Read MoreMultiple Bridge Deck Chip Seal Projects Scheduled to Begin in Rapid City Area
Beginning Monday, Aug. 31, 2026, crews will begin a bridge deck chip seal project at three different locations in the Rapid City area. Read MoreFeatured Resources
2026-2029 Statewide Transportation Improvement Program (STIP)
There will be a hearing before the South Dakota Transportation Commission on Tuesday, Sept. 22, 2026, to consider amendments of the following administrative rules:
- 70:01:02:01 – Minnehaha County speed zone rule;
- 70:01:02:39 – Jackson County speed zone rule;
- 70:01:02:59 – Sully County speed zone rule;
- 70:07:01:01 – Definitions;
- 70:07:04:09 – Reasons for Debarment;
- 70:07:04:10.02 – Hearing request; and
- 70:07:04:15 – Term of debarment.
More information about the rule amendments may be found at the following link on the OpenSD website: https://rules.sd.gov/agency?agency=DOT%20%20Department%20of%20Transportation.
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Meetings & Events
Railroad Board & Authority Meeting 09/16/2026
9/16/2026 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 DetailsAGC of South Dakota and SDDOT Hosting Webinar: Buy America and 2026 Spec Book Updates
9/16/2026 10:00 AM MT / 11:00 AM CT
Wednesday, Sept. 16, 2026 | 11 a.m. CT | Virtual
With the 2026 SDDOT Spec Book taking effect beginning with the letting on Wednesday, Oct. 7, 2026, now is the time to make sure your team understands what’s changing and is prepared! AGC of South Dakota and SDDOT are teaming up for an important member briefing covering Buy America requirements, approved product lists, and key changes included in the 2026 Specifications.
Webinar questions, contact:
Christina Bennett, PE Construction & Maintenance Engineer
Christina.Bennett@state.sd.us or 605-773-4391
Below is a link to the registration:
Aeronautics Commission Meeting 09/17/2026
9/17/2026 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: Boards and Commissions
View DetailsTransportation Commission Meeting 09/22/2026
9/22/2026 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
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