BRANDON On May 5, the westbound off-ramp on Interstate 90 at Brandon (exit 406) will be closing as part of the Diverging Diamond Interchange construction project.
Motorists traveling westbound on I-90 to Brandon should use exit 410 and follow the signed detour south to county Road 138 (Asphalt Boulevard) and then west into Brandon. The westbound exit 406 off-ramp closure and detour will be in place until late June.
The second phase of reconstruction on this DDI project includes completing the remaining on- and off-ramps, the eastbound lanes of I-90, the Exit Bridge, and the replacement of the eastbound I-90 bridge over the BNSF rail line.
The prime contractor for this $41.3 million project is T&R Contracting of Sioux Falls. The overall completion of the DDI reconstruction project at Brandon (exit 406) is June 2026.


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