As part of the provincial government’s Gateway Program, PCL constructed this southbound connection from Freemont Street, north of Highway 7, to the Mary Hill Interchange, just west of the Pitt River Bridge. The project included expanded polystyrene (EPS) built-up approaches on each side of a cast-in-place concrete portal bridge structure. The EPS build-ups were bounded with precast wall panels seated on a concrete footing and topped with a cast-in-place barrier and anchor slab. The portal allows for future rapid bus lanes to pass underneath the Mary Hill Bypass onramp, the construction of which was performed in partnership with a Qwantlen First Nations earthworks contractor.
The project was complicated by two Metro Vancouver water supply mains that ran directly under the northern approach. The PCL team used a lightweight pumice fill to distribute the loading required for construction, as well as the permanent loading introduced by the new structure.