DESIGN-BUILD
Main Span: 470 m (1,542 ft)
Bridge Length: 2.1 km (6,889 ft)
Width: 65 m (213 ft) (2 x 5 lanes, shoulders, and a sidewalk)
The Port Mann Bridge, spanning 2,073 m (6,801 ft) and carrying the Trans-Canada Highway (TCH) with ten lanes of traffic, stretches across the Fraser River in Vancouver, British Columbia.
The superstructure comprises an 850 m (2,789 ft) long cable-stayed main span unit, featuring a 1,223 m (4,012 ft) precast concrete segmental box girder approach. The cable-stayed structure consists of a 470 m (1,542 ft) main span and 190 m (623 ft) side spans. The 65 m (213 ft) wide superstructure consists of two five-lane decks, separated by a 10 m (32 ft) median that houses the central pylons.
Each individual roadway is supported by two planes of stay cables and incorporates a composite structure of steel edge girders, floor beams, and precast concrete deck panels. The single mast concrete pylons serve as anchorages for all four planes of cables, reaching a height of approximately 160 m (524 ft). The upper 40 m (131 ft) is reserved for the composite steel-concrete stay anchorage housings. The approach spans consist of three parallel precast segmental box girders constructed using cantilever construction above the water and span-by-span construction on land.
The foundations for the Port Mann Bridge typically consist of 1.8 m (5.9 ft) steel piles or 2.5 m (8.2 ft) drilled shafts supported on a firm ground till layer beneath loose sand deposits, situated at a depth below the riverbed.
Awards:
- 2016 ACEC Washington – Engineering Excellence Honor Award
- 2016 ACEC Washington – Engineering Excellence Platinum Award, Structural Systems
