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
Public Involvement
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
SD511.org Traveler Information
Forms & Publications
Bid Letting Contractors
Maps & GIS
Public Meetings
Careers
How Do I?
Press Releases
Informational Meeting Scheduled for Spearfish (Exit 10) Reconstruction Project on Interstate 90
On Thursday, June 18, 2026, the South Dakota Department of Transportation (SDDOT) in collaboration with the project contractor, Tru-Form Construction, Inc., will hold an informational meeting to discuss the upcoming reconstruction project at Spearfish (exit 10) on Interstate 90. Read MoreMultiple Chip Seal and Fog Seal Projects Scheduled to Begin in the Pierre Area
On Monday, June 8, 2026, crews will begin a chip seal and fog seal project on several routes in the Pierre area. Read MoreRoad Closure Scheduled for S.D. Highway 38 Grading Project East of Mitchell
Beginning on Monday, June 8, 2026, S.D. Highway 38 will be closed to through traffic from 421st Avenue to S.D. Highway 25 east of Mitchell. Read MoreCrack Seal Project Scheduled to Begin on S.D. Highway 75 Between the North Dakota Border and S.D. Highway 20
Beginning Monday, June 8, 2026, crews will begin a pavement preservation project by sealing cracks on S.D. Highway 75 between the North Dakota border and S.D. Highway 20. Read MoreSDDOT Reminds Public about Mowing Regulations for State Right of Way
The South Dakota Department of Transportation (SDDOT) reminds landowners of mowing regulations for the state right of way per Administrative Rule 70:04:06:06. Read MoreShoulder Chip Seal Project Scheduled to Begin in Custer and Pennington Counties
Beginning on Wednesday June 3, 2026, a chip seal project is scheduled to begin on various shoulder segments of U.S. Highway 16 and U.S. Highway 385 in Custer and Pennington Counties. Read MoreRamp Closures Planned at Western Avenue and Interstate 229 in Sioux Falls
Beginning Thursday, June 11, 2026, exit ramp closures will begin at the Western Avenue (exit 2) northbound off-ramp and at Interstate 229 to Minnehaha County Road 125/476th Avenue in Sioux Falls. Read MoreFeatured Resources
2026 Planned Construction MapCOMMONLY ASKED QUESTIONS:
Motor Vehicle Registration and Licensing:
SD Department of RevenueDriver Licensing:
SD Department of Public SafetyCommercial Driver Licensing (CDL):
SD Department of Public SafetyMap of Region and Area Boundaries
Contact info
South Dakota Official State Homepage:
Stay Connected
Meetings & Events
June 10, 2026 - S.D. Highway 22 East of Interstate 29 Public Meeting Near Clear Lake
6/10/2026 4:30 PM MT / 5:30 PM CT
The South Dakota Department of Transportation (SDDOT) will hold a public meeting open house to discuss and receive public input on the above project. The open house will be informal, with one on-one discussion with SDDOT design staff.
View DetailsTransportation Commission Meeting 06/11/2026
6/11/2026 8:00 AM MT / 9:00 AM CT
The agenda and corresponding attachments for the meeting, as well as additional information about the Commission, can be found here Boards and Commissions
View DetailsAeronautics Commission Meeting 06/18/2026
6/18/2026 1:00 PM MT / 2:00 PM CT
The agenda and corresponding attachments for the meeting, as well as additional information about the Commission, can be found here: Boards and Commissions
View DetailsThursday, June 18, 2026, Informational Meeting - Spearfish (exit 10) on Interstate 90
6/18/2026 5:00 PM MT / 6:00 PM CT
On Thursday, June 18, 2026, the South Dakota Department of Transportation (SDDOT) in collaboration with the project contractor, Tru-Form Construction, Inc., will hold an informational meeting to discuss the upcoming reconstruction project at Spearfish (exit 10) on Interstate 90. This reconstruction project includes modifying the exit 10 intersection and adding new traffic signals and luminaires.
View Details