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Bothell Today
By the People, for the People
All Lanes of I-405 Reopen in Bothell After Weekend Ramp Removal
Ramp removal completed as part of ongoing I-405 expansion project.
Published on Mar. 9, 2026
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All lanes of Interstate 405 in Bothell, Washington reopened on Monday morning after a weekend closure that allowed crews to dismantle sections of the northbound ramp over State Route 522 and remove concrete supports for new infrastructure as part of the ongoing I-405 expansion project.
Why it matters
The I-405 corridor is a heavily traveled route in the Seattle metropolitan area, and the expansion project aims to improve traffic flow and safety along this critical transportation artery. Temporary full closures are necessary for the construction work, which can cause significant disruptions for drivers.
The details
The weekend closure allowed crews to safely remove sections of the northbound ramp over SR 522 and remove concrete supports as part of the broader I-405 expansion efforts. Officials stated that full shutdowns are required to protect the bridge deck and ensure worker safety during these infrastructure projects.
- The I-405 lanes reopened on Monday morning, March 9, 2026 after the weekend closure.
- Another full closure is planned starting Friday night, March 13, 2026, when northbound I-405 at SR 522 and southbound I-405 from SR 527 to SR 522 will close.
The players
WSDOT
The Washington State Department of Transportation, the agency overseeing the I-405 expansion project.
What’s next
Overnight ramp closures will continue, with signed detours for drivers, as the broader I-405 expansion work progresses.
The takeaway
Temporary full closures of I-405 are necessary for critical infrastructure projects, but can cause significant disruptions for drivers. The expansion work aims to improve long-term traffic flow and safety along this heavily traveled corridor in the Seattle metro area.
