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Granville Bridge Seismic Retrofit and Renewal


Vancouver, British Columbia




Bridge Rehabilitation & Retrofit

Seismic Evaluation & Retrofitting


Associated Engineering developed a bearing replacement scheme to address the removal of PCB contaminants in the main truss span bearings of this highly visible eight-lane structure.

Mandatory bearing replacement offered the ideal opportunity to upgrade the steel truss spans by installing base isolation bearings and enhancing seismic performance.

Seismic base-isolation design was carried out to extract optimal performance from the existing capacity-limited substructure. Key to bearing replacement was to develop a scheme to jack up the steel trusses, which had no jacking provision.  Innovative designs were prepared for the complex temporary work needed to replace bearings of up to 7 MN load capacity.

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City of Vancouver

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Project Highlights

Key services included:

  • Inspection of the truss spans.
  • Preliminary and detailed design for the bearing replacements.
  • Integration of construction staging and public safety into the designs.
  • Load rating of the truss spans using 3-D BIM and structural modeling.
  • Structural evaluation, design, and construction services for concrete pier strengthening.
  • Seismic assessment using modern bridge performance criteria.
  • Development of environmental authorization applications, and liaison with Federal Agencies regarding application of PCB regulations to bridges.
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A career step in the right direction

We are recognized as one of Canada’s Best Managed Companies for 14 consecutive years but our achievements and reputation are only possible because of our amazing staff. We believe that a supported staff allows them to excel at what they do best, and provide the best possible service to our clients and communities.