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
Stormwater
Wetland Mitigation
Local Governments
About Local Governments
Bridge Improvement Grants
City/County Fund Balances
Emergency Relief (ER)
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
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
Overnight Lane and Ramp Closures Scheduled on Interstate 90 at Hartford (Exit 387)
July 29, 2025
Beginning at 8 p.m. on Monday, Aug. 4, 2025, through 6 a.m. on Tuesday, Aug. 5, 2025, the eastbound lanes of Interstate 90 at Hartford (exit 387) will be temporarily closed to allow crews to set bridge girders.
SDDOT Seeks Public Input for Proposed U.S. Highway 81 Reconstruction Project Near Madison
July 24, 2025
he South Dakota Department of Transportation (SDDOT) will hold a public meeting open house on Thursday, Aug. 7, 2025, from 5:30 p.m. to 7:30 p.m. to inform area residents of the proposed U.S. Highway 81 reconstruction project, extending from the S.D. Highway 34 junction to north of 9th Street NW in Madison.
Temporary Traffic Devices and Speed Reductions to be Placed During Sturgis Motorcycle Rally (1)
July 23, 2025
The 85th Annual Sturgis Motorcycle Rally is scheduled for Aug. 1-10, 2025. Due to the increased traffic volumes expected during the annual Rally, the South Dakota Department of Transportation (SDDOT) will activate temporary traffic adjustments.
Intersection of Capitol Avenue and Euclid Avenue Closing for Asphalt Surfacing in Pierre
July 23, 2025
On Thursday, July 24, 2025, crews will begin final asphalt surfacing on Euclid Avenue between Pleasant Drive through Capitol Avenue in Pierre.
Cold Milling and Asphalt Resurfacing to Begin on S.D. Highway 1806 in Pierre
July 22, 2025
On Thursday, July 24, 2025, crews will begin asphalt milling and resurfacing on S.D. Highway 1806 between the junction of U.S. Highway 14 and Highway 1806 to the west end of the Oahe Dam (S.D. Highway 204).
