Since the beginning of construction in 2009, GIG was involved as a preferred subcontractor to the Kiewit Flatiron GP (KFGP) Design-Build team, for the replacement of the original Port Mann Bridge and upgrading of 37km of Highway 1 from Vancouver to Langley.  Primary activities included the construction of replacement overpass structures across Highway 1 at 160th Street and 104th Ave in Surrey. Additionally, GIG has provided utility protection and relocation services throughout the Port Mann/Highway 1 (“PMH1”) corridor, including relocation of City of Surrey trunk sanitary  sewers and watermains for the environmentally sensitive 176th Street and 104th Avenue intersection reconstruction.
As a provincial design-build project, the Project was required to develop and administer a comprehensive Quality Management Plan covering all aspects of design and construction. GIG was required to adhere to this plan and provide all documentation and third party QC testing to satisfy project requirements. In order to keep the existing overpass structures open to traffic until completion of the new overpasses, the new structures were designed to be built immediately adjacent to the old. This required development of site specific temporary shoring to support the 50 year old overpasses while bridge end fills and abutments were constructed for the new structures, arm’s length from the existing. The project required construction of MSE walls for abutment support immediately next to an operating freeway. This required coordination of traffic staging and detours to allow for safe placement of precast bridge deck girder over top of existing highway.