GBM Case Study – 240A
The expansion of the Port Mann Bridge to a 10-lane structure, widening Highway 1, and upgrading the interchanges were made to reduce the area’s traffic congestion and improve air quality in the Vancouver area. This involved the installation of three large-diameter drainage culverts under Highway 1, which benefited the Latimer Creek and Leoran Brook Salmon Habitat Enhancement Culverts project and satisfied one of the Port Mann/Highway 1 Improvement (PMH1) goals, to protect and improve fish passage between habitats.
