what we do

Bridges & Structures

Designing bridges and structures that work

Bridges and structures provide critical connections for our transportation system. Parametrix’s structural engineers develop solutions that balance technology and complex site considerations to reduce cost, construction time, and impacts to the human and natural environment. We help clients locate, survey, design, inspect, and maintain bridges, highway structures, and other unique structures.

Tolt Bridge Emergency Repairs | Parametrix
Tolt Bridge Emergency Repairs
Carnation, Washington
Client: King County

The 962-foot-long Tolt Bridge is a five-span bridge across the Snoqualmie River, with two 300-foot-long steel truss spans over the main river channel. Following new FHWA and WSDOT rating criteria requiring the review of gusset plate connection, King County rated the bridge and found discrepancies between the design calculations and the built structure. Parametrix designed and provided construction for emergency repairs of the structure including retrofitting joint connections on the steel truss spans. Our team proactively coordinated with WSDOT and FHWA to get their buy-in, providing strong support for King County’s decision-making and helping to keep the project on schedule. Construction was staged to allow one lane of traffic to remain open.

 

VIEW OUR BRIDGES & STRUCTURES PROJECTS

  • Burnside Bridge

    Earthquake Ready Burnside Bridge

  • SR 520 West Connection Bridge | Parametrix

    SR 520 West Connection Bridge

  • Deschutes River Trail Boardwalk | Parametrix

    Deschutes River Trail Boardwalk

  • SH-51 Snake River Bridge Replacement | Parametrix

    SH-51 Snake River Bridge Replacement

  • Tolt Bridge Emergency Repairs | Parametrix

    Tolt Bridge Emergency Repairs

  • Idaho Highway 16 Extension | Parametrix

    Idaho Highway 16 Extension

Transportation