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Lane 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 MoreAsphalt Paving Project Scheduled on S.D. Highway 271 Near Artas
On Wednesday, July 15, 2026, asphalt paving will begin on S.D. Highway 271, from S.D. Highway 10 to the North Dakota border. Read MoreLane Closures Scheduled on Interstate 29 and S.D. Highway 115 near Dell Rapids
On Wednesday, July 8, 2026, lane closure will be placed on Interstate 29 from mile marker 70 to 62, and on S.D. Highway 115 for three miles near Dell Rapids. Read MoreS.D. Highway 44 East of Lennox Scheduled to Reopen to Traffic
On Wednesday, July 1, 2026, S.D. Highway 44 from 279th Street to 280th Street on the east side of Lennox will reopen to traffic on a primed gravel surface. Read MorePaving Project Scheduled to begin on S.D. Highway 27 South of Langford
On Monday, June 29, 2026, an asphalt concrete paving project is scheduled to being on S.D. Highway 27, approximately two miles south of Langford. Read MoreReconstruction Project Underway on Interstate 90 at Piedmont (Exit 46)
A reconstruction project on Interstate 90 at Piedmont (exit 46) began in mid- June 2026. Read MoreSDDOT Providing Interactive Public Engagement Opportunities for Tentative 2027-2030 STIP
The SDDOT will offer virtual and in-person public engagement options for the Tentative 2027-2030 Statewide Transportation Improvement Program (STIP). Read MoreFeatured Resources
2026 Planned Construction Map
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Meetings & Events
Public Informational Meeting for Reconstruction Project on Interstate 90 at Piedmont (Exit 46)
7/8/2026 5:30 PM MT / 6:30 PM CT
The South Dakota Department of Transportation (SDDOT) will hold a public informational meeting on Wednesday, July 8, 2026, at 5:30 p.m. for this reconstruction project. The informational meeting will be held in the old gymnasium at the Piedmont Valley Elementary School, located at 16159 N. 2nd St. in Piedmont.
View DetailsTentative 2027-2030 STIP Public Meeting July 14
7/14/2026 1:00 PM MT / 2:00 PM CT
Live virtual presentations will be provided to share statewide project information for the Tentative 2027-2030 STIP.
Tuesday, July 14, 2026, at 2 p.m. CT/1 p.m. MT
Register in advance to participate virtually by clicking this Zoom link: https://state-sd.zoom.us/meeting/register/dzpIN9s1TTaSK8NsQ6iyLA
View DetailsRailroad Board & Authority Meeting 07/15/2026
7/15/2026 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 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 here: Boards and Commissions
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