Pattullo Bridge, British Columbia, Canada--Rehabilitation of South Approach Viaduct

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Title: Pattullo Bridge, British Columbia, Canada--Rehabilitation of South Approach Viaduct

Author(s): Gordon A. Lang and Anthony G. Martin

Publication: Special Publication

Volume: 128

Issue:

Appears on pages(s): 1135-1150

Keywords: bridge bearings; bridges (structures); cracking (fracturing); falsework; hydraulics; jacking; load transfer; reinforced concrete; repairs; viaducts; Construction

Date: 11/1/1991

Abstract:
A major rehabilitation of the reinforced concrete approach viaduct to the Pattullo Bridge has been successfully completed over the last nine years. A condition inspection revealed that extensive cracking had taken place over the years,especially at the bridge girder ends due mainly to frozen bearings. A program of bearing replacement was carried out at all girder ends along with seismic improvements and general concrete repairs. An elaborate falsework system was designed which was easily adaptable to the varying geometry along the viaduct. Load transfer to the falsework to implement the rehabilitation was achieved using a hydraulic jacking system. The work was carried out in a series of six contracts and the project was completed without any bridge traffic closures during the assignment.