McGraw Street Bridge Seismic Rehabilitation
Location: Seattle, WA
Client: Seattle Department of Transportation
Specialty Contractor: PULLMAN
A seismic retrofit using the CSS V-Wrap™ carbon-fiber system strengthened the historic McGraw Street Bridge, improving load capacity and earthquake resilience for long-term service.
PROJECT DETAILS
The McGraw Street Bridge, built in 1936, is a historic Seattle landmark. As part of the Move Seattle Levy to improve bridge safety, it underwent a major seismic retrofit.
Tstrata provided design support and used the CSS V-Wrap™ system—an innovative carbon fiber solution that significantly boosted the bridge’s load capacity and seismic resistance.
PULLMAN, an exclusive licensee of Tstrata, applied the CSS V-Wrap™ to the bridge deck and columns, along with installing new floor beam bolsters and infill walls.
This retrofit not only preserved the historic bridge but also enhanced its earthquake resilience, ensuring it will remain a key part of Seattle’s infrastructure for years to come.
