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)
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
Lane Closures Planned on Interstate 229 in Sioux Falls
January 26, 2024
Starting Monday, Jan. 29, 2024, lane closures will be in place on northbound and southbound Interstate 229 near the Cliff Avenue exit. Lane closures will be placed as road conditions allow. The lane closures are planned from 9 a.m. to 4 p.m. from Monday, Jan. 29 through Thursday, Feb. 1, 2024.
Secondary Highway Closures Planned Across Southeast South Dakota (Jan. 13, 2024 – Release #2)
January 13, 2024
~ No Travel Advisories (NTA) are being issued throughout the southern part of the state.
~ Secondary road closures are planned for the southeast corner of the state.
No Travel Advisories Anticipated Across Southern South Dakota (Jan. 13, 2024)
January 13, 2024
Strong winds, gusting over 40 mph, are causing drifting on roadways and blizzard-like conditions today, Saturday, Jan. 13, 2024. Motorists should be aware that many of the state highways in southcentral and southeastern South Dakota continue to experience substantial drifting and limited visibility.
Illegally Dumped Snow Causes Safety Concerns
January 08, 2024
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.
SDDOT Seeks Public Input on Interstate 90 Exit 48 Interchange Modification Study
January 08, 2024
The South Dakota Department of Transportation (SDDOT) in conjunction with the Rapid City Area Metropolitan Planning Organization (MPO), City of Summerset, and Meade County will hold a public meeting open house on Wednesday, Jan. 24, 2024, from 5:30 – 7 p.m. MT to inform area residents and business owners of the proposed interchange modification study at Interstate 90, exit 48 (Stagestop Road).
About SDDOT
Aeronautics Commission
Careers at the SDDOT
Careers - SDDOT Scholarships
Careers - Seasonal Positions
Divisions
Mission & Vision
Organizational Chart
Transportation Commission
Railroad Board and Railroad Authority
SD Administrative Rules
SD Codified Law
Region & Area Offices
Forms & Publications
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
Of Interest
© 2025 State of South Dakota. All Rights Reserved.
South Dakota Department of Transportation
Becker-Hansen Building
700 E. Broadway Ave.
Pierre, SD 57501
Becker-Hansen Building
700 E. Broadway Ave.
Pierre, SD 57501
Powered by:
Modern Logic
Modern Logic
Region & Area Offices
Travelers
© 2025 State of South Dakota. All Rights Reserved.
South Dakota Department of Transportation
Becker-Hansen Building
700 E. Broadway Ave.
Pierre, SD 57501
Becker-Hansen Building
700 E. Broadway Ave.
Pierre, SD 57501
Powered by:
Modern Logic
Modern Logic