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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
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 05/14/2026
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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