Pattullo Bridge

Photo:

​Pattullo Bridge, between New Westminster and Surrey, British Columbia, Canada

​Rehabilitation of the an important commuter gateway.

​The Pattullo Bridge was constructed in 1938 and joins the cities of Surrey and New Westminster. It is a 1221 m (4006 ft.) long bridge, with main and side spans comprising a trussed arch with a suspended deck, that carries four 3 m (10 ft.) traffic lanes and one (downstream) sidewalk that is approximately 1.8 m (6 ft.) wide.

In 2003, COWI Bridge performed a limited economic evaluation of various rehabilitation and replacement alternatives. The primary purpose was to determine whether it would be more cost-effective to continue to maintain and rehabilitate the existing bridge or to construct a new four-lane replacement structure with comparable traffic capacity. For this purpose, COWI Bridge developed life cycle costs for replacement and rehabilitation options. The secondary purpose was to provide preliminary insight into the incremental costs associated with improving traffic capacity at this corridor.

Between 2005 and 2007, COWI Bridge performed an inspection and live load rating of the steel truss structure, designed live load steel upgrades and developed painting/upgrade contract documents.

In 2009, COWI Bridge was retained to help replace a span damaged by fire. In just two days, COWI Bridge designed all the required modifications to the structure and designed piles, pile caps and bearings. Later that year, COWI Bridge began providing bridge engineering services for the “Technical Consultant” team for developing the replacement for the Pattullo Bridge. This involves developing the basic requirements, determining a selected alignment and developing high level cost estimates and a schedule for the replacement of the bridge.

Currently, COWI Bridge is working towards a very aggressive delivery date to procure the isolation bearings and the tender package for the overall rehabilitation and retrofit construction work beginning this fall. Work includes deck rehabilitation, replacing the deck for two spans, pier retrofit of three piers, addition of isolation bearings, and truss strengthening.

LAST UPDATED: 08.11.2016