what we do

Bridges & Structures

Designing innovative structural solutions

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.

Burnside bridge
Earthquake Ready Burnside Bridge
Portland, Oregon
Client: Multnomah County
Partner: HDR Engineering

The Burnside Bridge, built in 1926, over the Willamette River is designated as the primary east-west emergency transportation route through Portland in the case of a major earthquake. Multnomah County is conducting this feasibility study and NEPA EIS to either replace or rehabilitate the structure to create a seismically-resilient Burnside Street lifeline crossing of the river. Parametrix is providing engineering services as part of a larger team to identify alternatives that balance stakeholder input, technical needs, costs, and County values as well as environmental impacts and benefits. Public input and criteria scoring have reduced the number of options from more than 100 to 4 alternatives (1 retrofit and 3 replacement), which are being further evaluated in the NEPA EIS phase.

Project Website:  https://multco.us/earthquake-ready-burnside-bridge



  • Burnside Bridge

    Earthquake Ready Burnside Bridge

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