Earthquake-Ready Burnside Bridge Replacement Underway

October 30, 2023

H&H will serve as the lead movable bridge designer and engineer of record for the earthquake-ready replacement for the Burnside Bridge in Multnomah County. The project will replace a nearly century-old structure with a bridge designed to have a 100-year service life and be seismically resilient, designed to withstand a Cascadia subduction earthquake. At the completion, it will become one of the longest bascule bridges in the world. H&H has been providing engineering services on the bridge for many decades and most recently supported the NEPA environmental process that led to this final design phase.

The new H&H-designed movable bascule span will include four lanes, a combined bicycle path, and pedestrian space, and it will be designed to accommodate future streetcar service. H&H has been providing engineering services for the NEPA process and continues our service through the final design and construction phases.

The project is being advanced through the Construction Manager/General Contractor (CM/GC) procurement model. H&H, as part of the architecture and engineering design team, is working closely with the County, their owner’s representative as well as the CM/GC joint venture to develop a cost-effective design that meets the project goals.

Learn more here:  Burnside Bridge