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Press Releases
Accelerated Construction Schedule Planned for Eastbound Interstate 90 Project Between Kennebec and Reliance
A 15 mile shoulder project is scheduled to begin Tuesday, April 28, 2026, on eastbound Interstate 90 between Kennebec and Reliance. Read MoreSDDOT Reminder: Election Signs Not Allowed in State Right of Way
Illegal signs create a safety hazard and may distract motorists from seeing important regulatory or directional signing. Read MoreSDDOT in Search of Borrow Material Providers for S.D. Highway 45 Project near Miller
The SDDOT is reaching out to area landowners to generate interest as a borrow provider. 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. 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 MoreFeatured Resources
On Tuesday, May 5, 2026, the Interim Rules Review Committee of the South Dakota Legislature will be considering changes adopted by the South Dakota Transportation Commission concerning the following administrative rules: 70:01:02:44 – Lincoln County speed zone rule. More information about the rule changes may be found at: https://rules.sd.gov/agency.aspx?agency=DOT%20%20Department%20of%20Transportation
National Work Zone Awareness Week April 20-24, 2026
2026 Planned Construction Map
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Meetings & Events
Transportation Commission Meeting 05/14/2026
5/14/2026 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 DetailsMay 19, 2026 - Interstate 29 Corridor Study Public Meeting
5/19/2026 3:30 PM MT / 4:30 PM CT
The public meeting open house will be informal, allowing for one-on-one discussion with the study team. A prerecorded presentation will play on a continuous loop for the duration of the open house. Informational display boards will also be provided.
View DetailsRailroad Board & Authority Meeting 05/20/2026
5/20/2026 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 05/21/2026
5/21/2026 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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