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
Highways
About Highways
Access Management
Geotechnical
Highway Classification
Highway Safety
Traffic Data
South Dakota Toward Zero Deaths (TZD)
Public Transit
General Information / Notices
Procurement
Provider Network
Rural Transit
Specialized Transit
Urban Transit Planning Program Units
Forms, Policies, and Publications
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
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
South Dakota Transportation Commission Awards Economic Development Grants for Infrastructure Improvement
October 05, 2026
The South Dakota Transportation Commission recently awarded approximately $2.36 million in economic development grants for infrastructure improvements to rural communities across the state.
Weekend Road Closure Scheduled for U.S. Highway 14A Near Broken Boot Gold Mine Southwest of Deadwood
September 29, 2026
A weekend road closure is scheduled to begin on Friday, Oct. 9, 2026, at 10 p.m. for pipe installation on U.S. Highway 14A at the Broken Boot Gold Mine southwest of Deadwood.
Road Closure Scheduled on U.S. Highway 16A in Keystone
September 28, 2026
Beginning Monday, Oct. 5, 2026, U.S. Highway 16A in Keystone will be closed at the intersection of U.S. Highway 16A and S.D. Highway 40 for a bridge replacement project.
Pedestrian Crossing Change and Traffic Shift Planned for North Euclid Avenue in Pierre
September 25, 2026
The week of Monday, Sept. 28, 2026, the temporary pedestrian crossing at 5th Street and Euclid Avenue will move back to 4th Street and Euclid Avenue. Pedestrian signs will also be placed at 4th Street.
RESCHEDULED: Closure Scheduled on S.D. Highway 11 Near Canton for Railroad Crossing Improvement Project
September 25, 2026
Beginning at 7 a.m. on Monday, Sept. 28, 2026, a closure is scheduled on S.D. Highway 11 near Canton for replacement of the railroad crossing one-half mile north of U.S. Highway 18.
