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
Interstate 90 Closure Extending to Sioux Falls at 5 p.m. (CT) on Thursday, Dec. 22, 2022
December 22, 2022
Interstate 90 (both eastbound and westbound) remains closed from Rapid City to Chamberlain due to sustained high winds causing blizzard-like conditions. As high winds move east, low visibility and drifting snow are worsening. The current closure on I-90 will be extended to Sioux Falls at 5 p.m. (CT) on Thursday, Dec. 22, 2022.
Interstate 90 Closing From Rapid City to Chamberlain
December 21, 2022
A closure on Interstate 90 (both eastbound and westbound) is planned from Rapid City (Box Elder exit 67) to Chamberlain beginning at 6 p.m. (MT) / 7 p.m. (CT) on Wednesday, Dec. 21, 2022, due to snow and high winds causing blizzard-like conditions.
S.D. Highway 38 Closure Planned at Interstate 90 near Hartford for Bridge Repair
December 20, 2022
Repair work is scheduled to begin on the Interstate 90 eastbound bridge structure over S.D. Highway 38 (exit 390 at Hartford).
New Construction Material Requirements for Build America, Buy America Act Begin in January
December 19, 2022
The Infrastructure Investment and Jobs Act (IIJA) included the Build America, Buy America Act (Act). The Act is intended to strengthen Made in America Laws and ensure many of the materials used on federal aid projects are produced in the United States. The Act added requirements for construction materials to be manufactured in the United States.
Illegally Dumped Snow Causes Safety Issues
December 19, 2022
The South Dakota Department of Transportation (SDDOT) reminds the public and commercial snow removal operators that it is illegal to place or dump excess snow on highway right-of-way, which includes driving surfaces, shoulders, and ditches.
