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Traffic Shift and Overnight Lane Closures Scheduled on Interstate 90 at Hartford (Exit 387)
Beginning on Thursday, Oct. 16, 2025, traffic will be shifted onto the new pavement and bridge on Western Avenue over Interstate 90 at exit 387 (Hartford). Read MoreSDDOT Seeks Public Input for Proposed S.D. Highway 25 Reconstruction Project (S.D. Highway 34 to the Hanson/Miner County Line)
The South Dakota Department of Transportation (SDDOT) will hold a public meeting open house on Tuesday, Oct. 28, 2025, from 5:30 – 7 p.m. (CT) to inform area residents of the proposed S.D. Highway 25 reconstruction project from S.D. Highway 34 to the Hanson/Miner County line. Read MoreSDDOT Seeks Public Input for Proposed Reconstruction Project at U.S. Highway 85 and Colorado Boulevard Intersection in Spearfish
The South Dakota Department of Transportation (SDDOT) will hold a public meeting open house on Tuesday, Oct. 28, 2025, at 5:30 p.m. (MT) to inform area residents of the proposed project to reconstruct the intersection of U.S. Highway 85 and Colorado Boulevard in Spearfish. Read MoreRoad Closure Scheduled for U.S. Highway 385 from Pactola Dam to Taylor Ranch Road Near Hill City
Beginning on Monday, Oct. 20, 2025, U.S. Highway 385 from the south end of Pactola Dam to Taylor Ranch Road will be closed to through traffic. Read MoreSDDOT Seeks Public Input for S.D. Highway 115 Corridor Study in Sioux Falls Area
Open houses are scheduled for Tuesday, Oct. 21, 2025, from 5 – 6:30 p.m. at The Riverside, located at 317 E. 4th St. in Dell Rapids; and Wednesday, Oct. 22, 2025, from 5 – 6:30 p.m. at Special Olympics South Dakota, located at 800 E. Interstate Ln. in Sioux Falls. Read MoreSouthbound Lanes on Interstate 29 Scheduled to Reopen Near Brookings
On Friday, Oct. 10, 2025, the southbound lanes on Interstate 29 are scheduled to reopen to traffic. Read MoreSDDOT 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 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
S.D. Highway 115 Corridor Study Public Meeting
10/21/2025 4:00 PM MT / 5:00 PM CT
The corridor being studied includes Highway 115 from the intersection with 4th Street in Dell Rapids to East Dike Place/Dike Drive in Sioux Falls. Open houses are scheduled for Tuesday, Oct. 21, 2025, from 5 – 6:30 p.m. at The Riverside, located at 317 E. 4th St. in Dell Rapids; and Wednesday, Oct. 22, 2025, from 5 – 6:30 p.m. at Special Olympics South Dakota, located at 800 E. Interstate Ln. in Sioux Falls.
View DetailsS.D. Highway 115 Corridor Study Public Meeting
10/22/2025 4:00 PM MT / 5:00 PM CT
The corridor being studied includes Highway 115 from the intersection with 4th Street in Dell Rapids to East Dike Place/Dike Drive in Sioux Falls. Open houses are scheduled for Tuesday, Oct. 21, 2025, from 5 – 6:30 p.m. at The Riverside, located at 317 E. 4th St. in Dell Rapids; and Wednesday, Oct. 22, 2025, from 5 – 6:30 p.m. at Special Olympics South Dakota, located at 800 E. Interstate Ln. in Sioux Falls.
View DetailsTraffic Incident Management System (TIMS) - Brandon, SD
10/27/2025 5:00 PM MT / 6:00 PM CT
The National Traffic Incident Management Responder Training was created by responders for responders. This course provides first responders a shared understanding of the requirements for safe, quick clearance of traffic incident scenes; prompt, reliable and open communication; and motorist and responder safeguards. First responders learn how to operate more efficiently and collectively.
View DetailsPublic Meeting - S.D. Highway 25 From S.D. Highway 38 to the Hanson and Minor County Line
10/28/2025 4:30 PM MT / 5:30 PM CT
Improvement Type: Grading, Interim Surfacing
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