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
Westbound Interstate 90 Nighttime Closures Scheduled at Exit 37
August 18, 2023
The westbound lanes of Interstate 90 will be closed from 9 p.m. to 6 a.m. beginning Monday, Aug. 21 through Wednesday, Aug. 23, 2023. The closure is necessary for the removal of the old exit 37 overpass bridge. Interstate traffic will be routed around the closure via the exit 37 ramps.
Interstate 90 Westbound Exit Ramp Week-long Closure Scheduled at Humboldt
August 16, 2023
Beginning on Thursday, Aug. 17, 2023, work is scheduled for the Interstate 90 off-ramp at Humboldt (exit 379).
2023 Sturgis Rally Final Vehicle Count
August 14, 2023
Final vehicle traffic counts from the South Dakota Department of Transportation (SDDOT) for vehicles entering Sturgis for the 83rd Annual Sturgis Motorcycle Rally which ran from Aug. 4-13, 2023, have been tallied.
2023 Sturgis Rally Vehicle Count - Through Day Seven
August 11, 2023
STURGIS, S.D. – The South Dakota Department of Transportation (SDDOT) will provide daily traffic counts for vehicles entering Sturgis for the 83rd Annual Sturgis Motorcycle Rally which runs from Aug. 4-13, 2023. The traffic counts to date at nine locations entering Sturgis for the 2023 Rally are as follows:
2023 Sturgis Rally Vehicle Count – Through Day Seven
August 11, 2023
STURGIS, S.D. – The South Dakota Department of Transportation (SDDOT) will provide daily traffic counts for vehicles entering Sturgis for the 83rd Annual Sturgis Motorcycle Rally which runs from Aug. 4-13, 2023. The traffic counts to date at nine locations entering Sturgis for the 2023 Rally are as follows:
