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Press Releases
Closure Scheduled for S.D. Highway 11 and 258th Street Intersection Near Corson
On Wednesday, July 22, 2026, the intersection of S.D. Highway 11 and 258th Street (County Highway 130) will close to complete grading and asphalt pavement near Corson. This intersection is anticipated to be closed until Friday, Oct. 16, 2026. Read MorePipe Replacement and Asphalt Paving Project Scheduled to Begin on S.D. Highway 471 Near Edgemont
On Thursday, July 16, 2026, a pipe replacement project will begin on S.D. Highway 471 near Edgemont. Read MoreSDDOT to Host Information Meeting for U.S. Highway 16/16B/Catron Boulevard Interchange Construction Project in Rapid City
On Tuesday, Aug. 4, 2026, the South Dakota Department of Transportation (SDDOT) will hold an informational meeting at 5 p.m. to share information on the background and phases for the U.S. Highway 16/16B/Catron Boulevard interchange construction project in Rapid City. Read MoreCambell Street Bridge Repair Project Scheduled to Begin in Rapid City
Beginning Monday, July 20, 2026, crews will close the northbound St. Joseph Street ramp under the Cambell Street viaduct bridge in preparation for upcoming bridge repair work in Rapid City. Read MorePavement Repair Project Scheduled to Begin on Interstate 90 West of Spearfish
Beginning Monday, July 13, 2026, a pavement repair project is scheduled to begin on the eastbound lanes of Interstate 90 west of Spearfish. Read MoreSDDOT Seeks Public Input for Proposed Project on S.D. Highway 25 Near Scotland
SDDOT will hold a public meeting open house on Tuesday, July 28, 2026, for a proposed grading, surfacing, and structure project on S.D. Highway 25 from two and one-half miles north of S.D. Highway 50 to U.S. Highway 18 near Scotland. Read MoreLane and Road Closures Scheduled for Interstate 229 and Cliff Avenue at Exit 4 in Sioux Falls
Beginning Monday, July 13, 2026, temporary lane and road closures are scheduled on Interstate 229 (I-229) and Cliff Avenue at exit 4 in Sioux Falls to allow crews to set bridge girders for the new northbound I-229 bridge. Read MoreFeatured Resources
2026 Planned Construction Map
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Meetings & Events
Aeronautics Commission Meeting 07/16/2026
7/16/2026 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 by clicking the link below.
View DetailsTentative 2027-2030 STIP Public Meeting July 16
7/16/2026 6:00 PM MT / 7:00 PM CT
Live virtual presentations will be provided to share statewide project information for the Tentative 2027-2030 STIP.
Thursday, July 16, 2026, at 7 p.m. CT/6 p.m. MT
Register in advance to participate virtually by clicking this Zoom link: https://state-sd.zoom.us/meeting/register/pnQObf20R6CwNStMPjAZVw
View DetailsTransportation Commission Meeting 07/23/2026
7/23/2026 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 DetailsJuly 28, 2026 - Public Meeting - S.D. Highway 25 from 2.5 miles north of S.D. Highway 50 to U.S. Highway 18 near Scotland
7/28/2026 4:30 PM MT / 5:30 PM CT
Open House Public Meeting for S.D. Highway 25 from two and one-half miles north of S.D. Highway 50 to U.S. Highway 18 near Scotland, SD The public is encouraged to attend.
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