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Press Releases
Spearfish (Exit 10) Intersection Project on Interstate 90 Begins Final Phase of Northern Median Construction
Beginning Monday, Nov. 9, 2026, the loon turnaround at exit 10 on Interstate 90 near Spearfish will open to traffic. A loon is a paved bulb-out designed to allow vehicles to turn around. Read MoreS.D. Highway 127 Reopens to Traffic Following Bridge Replacement Project Near Sisseton
On Friday, Nov. 6, 2026, the bridge over the Little Minnesota River on S.D. Highway 127 will reopen to traffic. This section of Highway 127 was closed for the installation of new box culvert structures and to replace the existing bridge. Read MoreSDDOT Seeks Public Input for Proposed Interstate 90 Reconstruction Projects West of Wasta
The South Dakota Department of Transportation (SDDOT) will hold a public meeting open house on Tuesday, Nov. 17, 2026, at 5:30 p.m. (MT) to inform area residents of the proposed reconstruction projects on Interstate 90 from two miles east of New Underwood to four miles west of Wasta. Read MoreSDDOT Seeks Public Comment on Draft Section 4(f) De Minimis Evaluation for Proposed Project on S.D. Highway 28 in Hamlin County
The South Dakota Department of Transportation (SDDOT) has proposed to reconstruct S.D. Highway 28 in Hamlin County from 192nd Street east of Lake Poinsett to 1.2 miles west of Estelline. Read MoreGrading Projects Scheduled to Begin on U.S. Highway 16A and S.D. Highway 87 Near Custer
Beginning Tuesday, Nov. 3, 2026, two curve-straightening projects are scheduled to begin on U.S. Highway 16A and S.D. Highway 87 in Custer State Park. Read MoreSDDOT Seeks Public Input for Proposed Project on S.D. Highway 50 near Avon
The South Dakota Department of Transportation (SDDOT) will hold a public meeting open house on Tuesday, Nov. 17, 2026, from 5:30 to 6:30 p.m. (CT) to inform area residents of the proposed project on S.D. Highway 50 from approximately one-quarter mile to the west and one-half mile to the east of Avon. Read MoreInterstate 90 Nighttime Closures Planned for Reconstruction Project at Piedmont (Exit 46)
Beginning Tuesday, Nov. 3, 2026, eastbound Interstate 90 will be closed nightly from 9 p.m. to 6 a.m. through Thursday, Nov. 5, 2026, for the installation of girders for the new overpass bridge at exit 46. Eastbound traffic will be detoured via exit 46 onto Sturgis Road, then to Stagestop Road, and back onto I-90 at exit 48. Read MoreFeatured Resources
2027-2030 Statewide Transportation Improvement Program (STIP)
There will be a hearing before the South Dakota Transportation Commission on Thursday, Oct. 29, 2026, to consider amendments to the following administrative rule: 70:01:02:01– Minnehaha County speed zone rule.
More information about the rule amendment may be found at the following link on the OpenSD website: https://rules.sd.gov/agency?agency=DOT%20%20Department%20of%20Transportation
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Meetings & Events
Transportation Commission Meeting 11/12/2026
11/12/2026 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 DetailsPublic Information Meeting: S.D. Highway 50 from .2 miles west and .5 miles east of Avon
11/17/2026 4:30 PM MT / 5:30 PM CT
The South Dakota Department of Transportation (SDDOT) will hold a public meeting open house on Tuesday, Nov. 17, 2026, from 5:30 to 6:30 p.m. (CT) to inform area residents of the proposed project on S.D. Highway 50 from approximately one-quarter mile to the west and one-half mile to the east of Avon. The public meeting open house will be held at the Avon Fire Hall, located at 106 1st Ave. E., in Avon.
View DetailsRailroad Board & Authority Meeting 11/18/2026
11/18/2026 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
View DetailsAeronautics Commission Meeting 11/19/2026
11/19/2026 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
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