CN rail bridge seismic retrofit project

Project status

Permit issued

On April 1, 2021, a project permit was issued to Canadian National Railway Company (CN) to complete seismic retrofit upgrades to the CN Rail Bridge located at Mile 118.7 on the Fraser River directly upstream of the Pattullo Bridge, British Columbia on federal lands and waters managed by the Vancouver Fraser Port Authority.

The project was approved subject to 55 permit conditions that CN must meet to ensure the project does not result in significant adverse environmental effects.

About the project

Canadian National Railway Company (CN) proposes to complete seismic retrofit upgrades to the CN rail bridge located at Mile 118.7 on the Fraser River directly upstream of the Pattullo Bridge. Upgrades will require the installation of ten new 2750 millimetre diameter steel piles. Two piles each will be installed at pier 6, 7, 8, 9 and 10.  New piles will be connected to the in-water piers using steel girder collars, pile sleeves and caps. Piles will be driven in welded segments by impact hammer from a temporary construction trestle or barge. The purpose of the project is to strengthen the substructure and foundations for increased seismic capacity.

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