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SDDOT Invites Proposals for the Sale or Lease of State-Owned Rail Line
The South Dakota Department of Transportation (SDDOT) is announcing the release of an Invitation for Proposals (IFP) seeking qualified parties interested in purchasing or leasing the State-owned Napa Junction to Platte rail line for common carrier freight rail operations. Read MorePavement Repair Project Scheduled to Begin on Interstate 90 in Sioux Falls
On Monday, Oct. 6, 2025, a pavement repair project is scheduled to begin on Interstate 90 in Sioux Falls from the I-90 and Interstate29 interchange to the west just beyond the Marion Road exit. Read MoreLane Reductions and Width Restrictions Planned on Missouri River Bridge at Mobridge for Utility Maintenance
On Monday, Sept. 29, 2025, the Missouri River bridge over U.S. Highway 12 located just west of Mobridge will be reduced to one 12-foot wide lane of traffic. Read MoreSDDOT Seeks Public Input for I-29 Corridor Study (Jefferson to Sioux City)
The South Dakota Department of Transportation (SDDOT), in collaboration with the City of North Sioux City, community of Dakota Dunes, Union County, Iowa DOT, Siouxland Interstate Metropolitan Planning Council, and the Federal Highway Administration (FHWA), will hold a public meeting open house from 4:30 p.m. to 6:30 p.m. on Thursday, Oct. 9, 2025, for the Interstate 29 Corridor Study. Read MoreRepair Work Scheduled to Begin on Interstate 90 Business Loop in Oacoma
On Thursday, Oct. 2, 2025, repair work is scheduled to begin on the Interstate 90 Business Loop (S.D. Highway 248) from Miller Place to just east of Emmett Avenue in Oacoma. Read MoreShoulder Paving Project Scheduled on U.S. Highway 85 Between Belle Fourche and Spearfish
On Thursday, Sept. 25, 2025, a shoulder milling and paving project is scheduled to begin on northbound U.S. Highway 85 between Belle Fourche and Spearfish. Read MoreInterstate 229 Northbound Temporary Lane Closure Scheduled at Cliff Avenue (Exit 4) in Sioux Falls
Beginning at 7 p.m. on Tuesday, Sept. 23, 2025, the northbound lanes of Interstate 229 will be temporarily closed. Read MoreFeatured Resources
View Detailed Active Featured Construction Project Information
The South Dakota Department of Transportation (SDDOT) is announcing the release of an Invitation for Proposals (IFP) seeking qualified parties interested in purchasing or leasing the State-owned Napa Junction to Platte rail line for common carrier freight rail operations.The full IFP, attachments, addenda, and question-and-answer forum are available on the SDDOT website at Bid Letting.
The information is located in the section entitled, “Lettings Currently Advertised for Bids.”
The South Dakota Transportation Commission will hold a hearing on Thursday, Oct. 23, 2025, to consider amendments to the following administrative rules:
70:01:02:26 – Edmunds County speed zone rule
70:01:02:52 – Moody County speed zone rule.More information about the rule amendments may be found on the OpenSD website.
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Meetings & Events
Public Meeting - Interstate 29 Corridor Study Jefferson to Sioux City
10/9/2025 3:30 PM MT / 4:30 PM CT
The goal of this meeting is to share design options for the I-29 corridor, allow the public the opportunity to collaborate with the project team on the design options, and provide information about future corridor projects and development. This input will help the study team to document key community needs to address in design and to validate the timeline for future infrastructure projects associated with I-29.
View DetailsStatewide Active Transportation Plan - Aberdeen Public Meeting
10/14/2025 4:30 PM MT / 5:30 PM CT
The South Dakota Department of Transportation (SDDOT) seeks input from residents and stakeholders to help develop the Statewide Active Transportation Plan. This comprehensive initiative is aimed at enhancing South Dakota’s public transportation system by incorporating active transportation modes such as walking and biking.
View DetailsStatewide Active Transportation Plan - Mitchell Public Meeting
10/15/2025 4:30 PM MT / 5:30 PM CT
The South Dakota Department of Transportation (SDDOT) seeks input from residents and stakeholders to help develop the Statewide Active Transportation Plan. This comprehensive initiative is aimed at enhancing South Dakota’s public transportation system by incorporating active transportation modes such as walking and biking.
View DetailsStatewide Active Transportation Plan - Sioux Falls Public Meeting
10/16/2025 4:30 PM MT / 5:30 PM CT
The South Dakota Department of Transportation (SDDOT) seeks input from residents and stakeholders to help develop the Statewide Active Transportation Plan. This comprehensive initiative is aimed at enhancing South Dakota’s public transportation system by incorporating active transportation modes such as walking and biking.
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