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Temporary Traffic Devices and Speed Reductions to be Placed During 2026 Sturgis Motorcycle Rally
The 86th Annual Sturgis Motorcycle Rally is scheduled for Aug. 7-16, 2026. With increased traffic volumes expected during the annual Rally, the SDDOT will activate temporary traffic signals and place speed limit reductions. Read MoreClosure Scheduled for S.D. Highway 11 and 258th Street Intersection Near Corson
On Wednesday, July 22, 2026, the intersection of S.D. Highway 11 and 258th Street (County Highway 130) will close to complete grading and asphalt pavement near Corson. This intersection is anticipated to be closed until Friday, Oct. 16, 2026. Read MorePipe Replacement and Asphalt Paving Project Scheduled to Begin on S.D. Highway 471 Near Edgemont
On Thursday, July 16, 2026, a pipe replacement project will begin on S.D. Highway 471 near Edgemont. Read MoreSDDOT to Host Information Meeting for U.S. Highway 16/16B/Catron Boulevard Interchange Construction Project in Rapid City
On Tuesday, Aug. 4, 2026, the South Dakota Department of Transportation (SDDOT) will hold an informational meeting at 5 p.m. to share information on the background and phases for the U.S. Highway 16/16B/Catron Boulevard interchange construction project in Rapid City. Read MoreCambell Street Bridge Repair Project Scheduled to Begin in Rapid City
Beginning Monday, July 20, 2026, crews will close the northbound St. Joseph Street ramp under the Cambell Street viaduct bridge in preparation for upcoming bridge repair work in Rapid City. Read MorePavement Repair Project Scheduled to Begin on Interstate 90 West of Spearfish
Beginning Monday, July 13, 2026, a pavement repair project is scheduled to begin on the eastbound lanes of Interstate 90 west of Spearfish. Read MoreSDDOT Seeks Public Input for Proposed Project on S.D. Highway 25 Near Scotland
SDDOT will hold a public meeting open house on Tuesday, July 28, 2026, for a proposed grading, surfacing, and structure project on S.D. Highway 25 from two and one-half miles north of S.D. Highway 50 to U.S. Highway 18 near Scotland. Read MoreFeatured Resources
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Meetings & Events
Transportation Commission Meeting 07/23/2026
7/23/2026 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 DetailsJuly 28, 2026 - Public Meeting - S.D. Highway 25 from 2.5 miles north of S.D. Highway 50 to U.S. Highway 18 near Scotland
7/28/2026 4:30 PM MT / 5:30 PM CT
Open House Public Meeting for S.D. Highway 25 from two and one-half miles north of S.D. Highway 50 to U.S. Highway 18 near Scotland, SD The public is encouraged to attend.
View DetailsDimock Master Transportation Plan Study Public Meeting
8/3/2026 3:00 PM MT / 4:00 PM CT
The South Dakota Department of Transportation (SDDOT), in collaboration with the town of Dimock, will hold a public meeting open house from 4 p.m. to 5:30 p.m. (CT) on Monday, Aug. 3, 2026, at City Hall located at 505 S. Main St. in Dimock. The public meeting is designed to discuss and receive input regarding the preliminary recommendations for the Master Transportation Plan being developed for Dimock.
The public meeting open house will be informal, allowing for one-on-one discussions with the study team. A short presentation will be given at the beginning of the meeting.
The overall goal for the study is to develop a long-range plan for the town of Dimock. The study area includes all roads, sidewalks, and other transportation related infrastructure within the Dimock city limits.
View DetailsEthan Master Transportation Plan Study Public Meeting
8/3/2026 5:30 PM MT / 6:30 PM CT
The South Dakota Department of Transportation (SDDOT), in collaboration with the town of Ethan, will hold a public meeting open house from 6:30 to 8 p.m. (CT) on Monday, Aug. 3, 2026, at the Town Hall located at 218 W. Main St. in Ethan. The public meeting is designed to discuss and receive public input regarding the preliminary recommendations for the Master Transportation Plan being developed for the town of Ethan. The study area includes all roads, sidewalks, and other transportation‑related infrastructure.
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