DOT - South Dakota Department of Transportation
09/18/2026 | Press release | Distributed by Public on 09/18/2026 06:41
Cliff Avenue (Exit 4) Northbound Off-Ramp on Interstate 229 Scheduled to Reopen in Sioux Falls
Cliff Avenue (Exit 4) Northbound Off-Ramp on Interstate 229 Scheduled to Reopen in Sioux Falls
For Immediate Release:
Friday, Sept.18, 2026
Contact:
Mike Schmidt, Project Engineer, 605-940-1000
SIOUX FALLS, S.D. - Beginning on Thursday, Sept. 24, 2026, the northbound off-ramp at Cliff Avenue (exit 4) on Interstate 229 in Sioux Falls is scheduled to reopen to traffic. The scheduled reopening date is weather dependent. After exiting the Interstate, travelers will only be allowed to turn right onto Cliff Avenue until paving of Cliff Avenue has been completed in late October or early November 2026.
The northbound auxiliary lane and ramp were recently reconstructed as part of an overall interchange reconstruction project at Cliff Avenue (exit 4). The northbound mainline Interstate and on-ramp at Cliff Avenue (exit 4) will remain closed until late November when all paving and bridge work has been completed.
Southbound I-229 will remain in its current two-lane configuration until all barriers, cones, and barrels are removed by crews and pavement can be restriped. This work should be completed by early December 2026.
Motorists are reminded to use caution and reduce their speed while workers and equipment are present.
The prime contractor for this $48 million project is T&R Contracting, Inc. of Sioux Falls, SD. The overall project completion date is June 2027.
Featured Project Information:
Find additional information about this project on the SDDOT website at https://dot.sd.gov/i229exit4.
Sign Up for Text Notifications:
For updates on major traffic changes on this reconstruction project, subscribe to a free text-in service. To subscribe, simply text "I229Exit4" to 605-566-4041. Subscribers can unsubscribe at any time.
About SDDOT:
The mission of the South Dakota Department of Transportation is to provide a safe and efficient public transportation system.
For the latest on road and weather conditions, road closures, construction work zones, commercial vehicle restrictions, and traffic incidents, please visit https://sd511.org or dial 511.
Read more about the innovative work of the SDDOT at https://dot.sd.gov.
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DOT - South Dakota Department of Transportation published this content on September 18, 2026, and is solely responsible for the information contained herein. Distributed via Public Technologies (PUBT), unedited and unaltered, on September 18, 2026 at 12:41 UTC. If you believe the information included in the content is inaccurate or outdated and requires editing or removal, please contact us at [email protected]