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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For updates on MAJOR traffic changes, subscribe to a free text-in service. To subscribe, simply text the keyword listed below to 605-566-4041. Subscribers can unsubscribe at any time. 

Text "I90Exit406" to 605-566-4041


Project Timeline:

Spring 2024 - Overall Completion Date: June 2026

Minor clean-up work to be completed in 2026


Project Updates:

Oct. 3, 2024 - Press Release:

Beginning at 7 p.m. on Wednesday, Oct. 9, 2024, the South Dakota Department of Transportation (SDDOT) will temporarily close eastbound and westbound lanes on Interstate 90 and divert traffic through the on and off-ramps at Brandon (exit 406). This traffic diversion will be maintained through the overnight until 6 a.m. on Thursday, Oct. 10, 2024. This traffic pattern switch is being scheduled to remove forms from the exit bridge. 

Traffic on S.D. Highway 11 will be maintained during this overnight traffic diversion. Flaggers will be posted to guide Highway 11 traffic as Interstate traffic will have priority through this traffic pattern shift. Depending on the work completed during the first night, motorists should be aware that a second night of traffic diversion is possible.

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Sept. 20, 2024:
 

Aug. 15, 2024 – Sept. 15, 2024, Completed Work: Pavement on the southbound lanes of Highway 11 is very near complete, south of the exit bridge, and traffic has been switchedA large portion of the I-90 westbound lanes have been completed. Approximately one third of the large panel retaining wall on the east side of Highway 11 is complete. All phase one girders on new exit bridge have been set. The western most pier of the railroad bridge has been completed. 

Anticipated work Sept. 15, 2024 – Oct. 15, 2024: The pavement on the exit bridge deck will be completedPhase one pavement on the westbound lanes of I-90 will be completedThe large panel retaining wall on the east side of Highway 11 will be completed as well as grading and pavement on northbound lanes of Highway 11 south of the exit. The contractor plans to completthe eastern most pier on the railroad bridge and begin gradingThey also plan to complete the large block wall at the railroad bridge. 

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Aug. 28, 2024 - Press Release

On Friday, Aug. 30, 2024, a traffic switch is scheduled on S.D. Highway 11 south of the bridge at Interstate 90 (exit 406) at Brandon. Traffic that is currently placed in the northbound lane of Highway 11 will be switched to the southbound lane to allow work to begin south of the bridge.

Motorists on Highway 11 will be switched to the two southbound lanes beginning at Redwood Boulevard to the south end of the bridge. Access to businesses on the east side of Highway 11 will be maintained during operations through direct access or by detour routes. This traffic diversion will be in place for approximately three weeks until grading and paving work in the northbound lane of Highway 11 is completed.

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April 25, 2024:

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.
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