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S.D. Highway 28 Scheduled to Reopen Near Estelline
S.D. Highway 28 from Estelline east to the S.D. Highway 15 junction is scheduled to reopen to traffic on Saturday, Nov. 15, 2025. Read MoreSDDOT, Highway Patrol, and National Weather Service Hosting Pre-Winter Travel Resource Webinar
On Thursday, Nov. 20, 2025, from 10 - 11 a.m. (CT), the South Dakota Department of Transportation (SDDOT) in conjunction with the South Dakota Highway Patrol and the National Weather Service (NWS), will host an online Pre-Winter Travel Resource and Safety Webinar via Zoom. The virtual resource webinar is open to all media, local and state agencies, as well as the general public. Read More14th Avenue Scheduled to be Closed for Bridge Replacement Work in Watertown
On Monday, Nov. 10, 2025, a bridge replacement project is scheduled to begin on 14th Avenue Northwest on the bridge over the Big Sioux River in Watertown. Read MoreSDDOT Snowplow Naming Contest Returns for Sixth Year
The sixth annual Snowplow Naming Contest hosted by the South Dakota Department of Transportation (SDDOT) is now open through Friday, Dec. 12, 2025. Read MoreLane Restriction Planned on U.S. Highway 12 at West End of Missouri River Bridge Near Mobridge
During the afternoon hours on Wednesday, Oct. 29, 2025, the west end of the Missouri River Bridge over U.S. Highway 12 (located just west of Mobridge) will be reduced to one 11-foot wide lane of traffic. Read MoreSDDOT Seeks Public Input on Environmental Assessment and Section 4f Evaluation for Interstate 229 Exit 3 Interchange in Sioux Falls
The South Dakota Department of Transportation (SDDOT), in collaboration with the Sioux Falls Metropolitan Planning Organization (MPO), and the City of Sioux Falls, will hold an in-person public meeting open house on Wednesday, Nov. 5, 2025, from 5-6:30 p.m. (CT). Read MoreTraffic 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 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 public hearing on Tuesday, Nov. 25, 2025, at 9 a.m. to consider proposed changes to the following rule: 70:01:02:44 – Lincoln County speed zone rule. Petitioners have proposed a reduced speed limit on State Trunk Highway 115 in and around Harrisburg for the purpose of enhancing safety. More information may be found on the OpenSD website.
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Meetings & Events
Transportation Commission Conference Call
11/13/2025 8:00 AM MT / 9:00 AM CT
The agenda and corresponding attachments for the meeting, as well as additional information about the Transportation Commission, can be found at https://boardsandcommissions.sd.gov/Meetings.aspx?BoardID=96.
View DetailsSD Railroad Board Meeting
11/19/2025 10:00 AM MT / 11:00 AM CT
The agenda and corresponding attachments for the meeting, as well as additional information about the Board, can be found here: Boards and Commissions.
View DetailsTransportation Commission Meeting
11/20/2025 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 DetailsInterstate 90, exit 48 Interchange Study Public Meeting
12/3/2025 5:30 PM MT / 6:30 PM CT
The South Dakota Department of Transportation (SDDOT) will host a public meeting open house on Wednesday, Dec. 3, 2025, from 5:30 p.m. to 7 p.m. MT to inform area residents and business owners about the preliminary results of the interchange modification study at Interstate 90 (exit 48) Stagestop Road.
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