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
Ramp Closures Planned for Interstate 29 at 41st Street DDI Project in Sioux Falls
September 13, 2023
On Thursday, Sept. 14, 2023, the southbound off-ramp at Interstate 29 (exit 77) at 41st Street is scheduled to temporarily close at 6 a.m. The I-29 northbound on-ramp at exit 77, which has been closed for grading and paving work, is scheduled to reopen during the afternoon hours on Thursday, Sept. 14, 2023.
Interstate 90 Westbound Entrance Ramp Closure Scheduled Near Humboldt
September 13, 2023
Beginning at 5 p.m. on Wednesday, Sept. 13, 2023, work is scheduled on Interstate 90 at the Humboldt Interchange (exit 379).
Public Meeting Scheduled for Resurfacing and Intersection Modification Project Near Madison
September 13, 2023
The South Dakota Department of Transportation (SDDOT) will hold a public meeting open house on Thursday, Sept. 28, 2023, to discuss and receive public input on a resurfacing and intersection modification project at the intersection of S.D. Highway 34 and 457th Avenue near Madison.
Asphalt and Subgrade Repair Scheduled to Begin in Southwest South Dakota
September 12, 2023
Asphalt and subgrade repairs will begin at two locations in southwestern South Dakota on Wednesday, Sept. 13, 2023.
S.D. Highway 25 Phase Two Closure Planned North of De Smet
September 11, 2023
On Wednesday, Sept. 13, 2023, S.D. Highway 25 will be closing for the planned construction from just north of De Smet to the north S.D. Highway 28 junction.
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