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Press Releases
Rock Excavation Blast Scheduled for Backslope Repair Project on U.S. Highway 14A near Deadwood
On the afternoon of Wednesday, Dec. 17, 2025, rock excavation blasting is scheduled on U.S. Highway 14A approximately four miles east of Deadwood. Read MoreOvernight Lane Closures Planned on Interstate 90 at Hartford - Exit 387
Beginning at 8 p.m. on Wednesday, Dec. 17, 2025, through 6 a.m. on Thursday, Dec. 18, 2025, the eastbound lanes of Interstate 90 at exit 387 (Hartford) will be temporarily closed to allow crews to set bridge girders over the eastbound lanes. Read MoreEuclid Avenue Reopening to Through Traffic in Pierre
At approximately 6 p.m. (CT) on Friday, Dec. 5, 2025, Pierre Street, Pleasant Avenue, and Euclid Avenue will be reopened to through vehicular traffic in Pierre. Read MoreSDDOT Seeks Public Input on Preliminary Recommendations for Tripp County Master Transportation Plan
The South Dakota Department of Transportation (SDDOT) in conjunction with Tripp County will hold a public meeting open house on Wednesday, Dec. 10, 2025, from 5:30 to 7 p.m. (CT) to present and receive public input on the preliminary recommendations for the Tripp County Master Transportation Plan. Read MoreSouthbound On- and Off- Ramps on Interstate 229 at Cliff Avenue Scheduled to Reopen in Sioux Falls
Beginning on Friday, Dec. 5, 2025, the southbound on- and off-ramps at Cliff Avenue (exit 4) on Interstate 229 are scheduled to reopen to traffic. Read MoreSDDOT Seeks Public Input on Interstate 90 Exit 48 Interchange Modification Study Near Summerset
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. Read MoreS.D. Highway 46 to Reopen in Southeast South Dakota to the Iowa State Line
On Wednesday, Nov. 19, 2025, S.D. Highway 46 from S.D. Highway 11 to the Iowa state line is scheduled to reopen to traffic. Read MoreFeatured Resources
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
SD Railroad Board Meeting 12/17/2025
12/17/2025 10:00 AM MT / 11:00 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 DetailsTransportation Commission Meeting 12/18/2025
12/18/2025 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 01/15/2026
1/15/2026 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 DetailsRailroad Board & Authority Meeting 01/21/2026
1/21/2026 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.
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