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UPDATED INFORMATION: Temporary Closure Scheduled for Cliff Avenue at Interstate 229 in Sioux Falls
SIOUX FALLS, S.D. – On Friday, Jan. 9, 2026, South Cliff Avenue at Interstate 229 will be temporarily closed beginning at 9:30 a.m. as contractors remove a temporary bridge over Cliff Avenue. Weather permitting, the work is expected to be completed in one hour. During the closure, drivers should use exits 3 (Minnesota Avenue) and 5 (East 26th Street) as detour routes. Read MoreSouth Dakota Transportation Commission Awards Economic Development Grants
At the South Dakota Transportation Commission meeting held on Thursday, Dec. 18, 2025, commissioners awarded $4 million in economic development grants for infrastructure improvements to counties and smaller communities across South Dakota. Read MoreRock 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 MoreFeatured Resources
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Meetings & Events
Traffic Incident Management System (TIMS) – Pierre, SD
1/14/2026 12:00 PM MT / 1:00 PM CT
Traffic Incident Management Training. This training provides instruction on safe, efficient, and coordinated response to traffic incidents. The course emphasizes responder safety, quick incident clearance, and effective interagency communication to reduce risks and restore normal traffic operations as quickly as possible.
View DetailsTraffic Incident Management System (TIMS) – Pierre, SD Evening Class
1/14/2026 5:00 PM MT / 6:00 PM CT
Traffic Incident Management Training. This training provides instruction on safe, efficient, and coordinated response to traffic incidents. The course emphasizes responder safety, quick incident clearance, and effective interagency communication to reduce risks and restore normal traffic operations as quickly as possible.
View DetailsTraffic Incident Management System (TIMS) – Pierre, SD
1/15/2026 7:00 AM MT / 8:00 AM CT
Traffic Incident Management Training. This training provides instruction on safe, efficient, and coordinated response to traffic incidents. The course emphasizes responder safety, quick incident clearance, and effective interagency communication to reduce risks and restore normal traffic operations as quickly as possible.
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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