South DakotaDepartment of Transportation
Transportation
Aviation
About Office of Aeronautics Services
Office of Aeronautics Services
Airports Conference
Aerospace Education
Airport Information
Links
Aviation Systems Plan
Bridges
Office of Bridge Design
Design & Plans
Historical Bridges
Inventory & Inspection
Posted Structures
Reference Information
SD Bridge Photos
Doing Business
Certification & Accreditation
About Certification & Accreditation
SDDOT Accreditation Certification List
Approved Products
Manuals & Documents
Welding Certifications
Training
Contractors
Bid Letting Information
Concrete Pipe Release
Contractors/Suppliers
Prequalified Contractors
CMS Web Reports
Disadvantaged Business Enterprise (DBE)
Fuel Price Index
Labor Compliance
Materials
Preconstruction Meetings
Price Adjustment Guidelines
Standard Specifications
Subcontract Requirements
Forms & Documents
Webinars
Alternative Contracting
Engineering/Design Services
Consultant Services
Downloadable Files
Manuals
News & Updates
Right of Way / Relocation Assistance
Standard Bid Items
Standard Plates
Surveyors
Utility Coordination
Environmental
About Environmental
Agreements
Endangered Species
Environmental Assessments
Forms
Public Involvement
Stormwater
Wetland Mitigation
Local Governments
About Local Governments
Bridge Improvement Grants
City/County Fund Balances
Emergency Relief (ER)
Local Federal Bridge Program
Forms & Documents
Secure Accounts Billing
Transportation Economic Development Grants
Urban Systems
Rural Access Infrastructure Fund Program
Traffic Incident Management
Training
Projects & Studies
Planning
Carbon Reduction Strategy
Freight Plan
Long Range Plan
Metropolitan Planning Organization
Non-state Public Road Inventory
Pavement Condition Monitoring
Pavement Management
South Dakota EV Fast Charging Plan
Statewide Transportation Improvement Program – STIP
Tentative Statewide Transportation Improvement Program – STIP
Transportation Asset Management Plan (TAMP)
Construction Projects
Inside SDDOT
Forms & Publications
Brochures
Forms
Manuals
Maps
Newsletters
Reports
SDDOT Engagement Opportunities
Join One of Our Contact Lists
Press Releases
Media Kits
News Stories
Branding and Identity Guidelines
Learn More about the SDDOT Logo
SDDOT Blog
Press Releases
Temporary Traffic Devices and Speed Reductions to be Placed During 2026 Sturgis Motorcycle Rally
July 20, 2026
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.
Closure Scheduled for S.D. Highway 11 and 258th Street Intersection Near Corson
July 16, 2026
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.
Pipe Replacement and Asphalt Paving Project Scheduled to Begin on S.D. Highway 471 Near Edgemont
July 15, 2026
On Thursday, July 16, 2026, a pipe replacement project will begin on S.D. Highway 471 near Edgemont.
SDDOT to Host Information Meeting for U.S. Highway 16/16B/Catron Boulevard Interchange Construction Project in Rapid City
July 15, 2026
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.
Cambell Street Bridge Repair Project Scheduled to Begin in Rapid City
July 13, 2026
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.
