OVERVIEW

BRIDGING SEATTLE COST | SCHEDULE ENVIRONMENT

The West Seattle Bridge Reimagined in Mass Timber Summer 2020

THE BEST OPTION

It’s time to bring a new kind of infrastructure to Seattle.

W e’ve proposed a bridge constructed of mass timber steel composites. It would accommodate vehicular traf fic, light rail, pedestrians, and bike traffic, and it could be a beautiful, symbolic representation of Seattle’s dedication to sustainability and our relationship with trees and timber . The benefits include longer lifespan than the typical concrete bridge, smaller carbon footprint, and the potential for immensely positive economical effect in the Pacifi c Northwest.

A mass timber bridge also gets cars over the bridge and into West Seattle faster than the cast-in-place concrete option. B+H and SMEC partnered with industry veteran Lane Construction to assemble this cost and schedule comparison of West Seattle Bridge options. What we found

is that a mass timber steel composite West Seattle Bridge can be finished in 28 months - 16 months faster than castin place concrete.