SR 99 - NB Duwamish River Bridge - Select Grid Deck Replacement - Project map

A small map showing the location of the SR 99 Duwamish River Bridge select grid deck replacement project.

In summer 2020, contractor crews replaced 14 grid deck panels on the northbound SR 99 Duwamish River Bridge. The work improves traction on the bridge and provides a smoother ride for travelers. To limit effects on traffic, work took place at night.