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Published August 2, 2026 at 8:00 PM

Updated August 8, 2026

Demolition, site work and new construction of a civil project in Seattle, Washington. Completed plans call for the construction of a bridge / tunnel.

Replacement of Portage Bay Bridge with two new parallel variable depth segmental box girder bridges, replacement of SR 520 eastbound off-ramp to Montlake Boulevard East, replacement of 10th Ave E and Delmar E under-crossings with a new Roanoke Lid Bridge, construction of approximately 75 retaining walls, extension of transit/HOV system, and construction of a cross-lake bicycle and pedestrian trail. Set-asides: 5% SBE, 10% MBE, 6% WBE.

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$3,000,000.00

Public - State/Provincial

Plans and Specifications are not available for this project. If that changes, they will be made available here.

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July 31, 2026

September 29, 2026

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SR 520, I-5 to Montlake, Seattle, WA

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