Interstate 90 - Exit 406 (Brandon)
Project Summary:
This project includes the reconstruction of exit 406 (Brandon) with added lighting, signals, and mainline Interstate work. This project also includes three structure replacements.
- The interchange will be reconstructed as a diverging diamond configuration.
- Westbound Interstate 90 lanes (along with the railroad structure on I90) will be reconstructed in 2024 and the eastbound lanes (and railroad structure in 2025). The interchange itself and new structure over I90 will be reconstructed between 2024 and 2025.
- S.D. Highway 11 traffic will be maintained across Interstate 90 during construction.
- The westbound on-ramp and eastbound off-ramp are expected to be open to traffic for the majority of the project. Closures for the westbound off-ramp and eastbound on-ramp are planned for 2025.
- Work will extend on S.D. Highway 11 down to Redwood Boulevard. That work includes adding a shared use path on the west side, approach and side street work, a retaining wall on the east side north of Ash St, and other items.
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Project Timeline:
Spring 2024 - Overall Completion Date: June 19, 2026
Minor clean-up work to be completed in 2026
Project Updates:
May 3, 2024 - Press Release:
Beginning Tuesday, May 7, 2024, the Interstate 90 eastbound off-ramp at exit 406 (Brandon) will be closed between 9 a.m. and 3 p.m. The off-ramp closure is necessary for Xcel Energy to perform transmission line work. This work is anticipated to last up to five days. Traffic on S.D. Highway 11 over the Interstate or exiting east to I-90 will also be stopped periodically with the use of flaggers.
Motorists should be prepared for delays and are encouraged to use alternate routes. A detour will also be in place utilizing exit 410 by directing motorists back to exit 406 in the westbound lanes. Drivers are asked to be aware of workers adjacent to the driving lanes and to slow down through the work zone.
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April 25, 2024:
April 15, 2024:
March 15, 2024 – April 15, 2024, Completed Work: The project started on Thursday, March 28, 2024. Traffic control was in place on April 5. Removals have begun on Interstate 90 and S.D. Highway 11 and will continue for a few weeks as portions of new grade have been started in areas that have minimal impact to traffic. Pavement removal began on the southbound lanes of Highway 11. Work on the storm sewer on Express Avenue is under way and nearing completion.
Anticipated work in April 15, 2024 – May 15, 2024: Grading work along the westbound on ramp will continue as well as pavement removal on I-90. Express Avenue grading will continue, and gravel will begin immediately after the grading. On Highway 11 storm sewer will be placed along the west side and grading will begin as storm sewer is completed.
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March 26, 2024 - Dakota News Now:
Watch the full story here
Project Resources (PDFs):
Interstate 90 Layout
S.D. Highway 11 Layout
DDI Layout
Phasing Year One
Phasing Year Two
Project Photos:
Project Contract Amount:
$41.3 Million
Project Contacts:
SDDOT:
Michael Noonan
605-940-1237
Contractor:
T&R Contracting, Inc. of Sioux Falls, S.D.