Rendering Courtesy of T.Y. Lin International
The new 2073-m (6,801-ft)-long Port Mann Bridge will carry the Trans Canada Highway (TCH) with ten lanes of traffic across the Fraser River in Vancouver, BC. The crossing includes an 850-m (2,789-ft)-long cable-stayed main span unit with 1223-m (4,012-ft)-long precast concrete segmental box girder approaches.The cable-stayed structure includes a main span of 470 m (1,542 ft) and side spans of 190 m (623 ft). The 65-m (213-ft)-wide superstructure consists of two five-lane decks, separated by a 10-m (32-ft) median where the central pylons are located. Each separate roadway is supported by two planes of stay cables and consists of a composite structure with steel edge girders and floor beams, with precast concrete panels.
The single mast concrete pylons house anchorages for all 4 planes of cables. Pylons reach a height of about 160 m (524 ft) over the water, with the upper 40 meters (131 ft) reserved for the stay anchorage housings made of a composite steel concrete structure. The approach spans consist of three parallel precast segmental box girders with cantilever construction above the water and span-by-span construction on land. Foundations for the new Port Mann Bridge are generally 1.8-m (5.9-ft) steel piles or drilled shafts, supported on a firm ground till layer under the loose sand deposits at a depth below the river.
Owner: Ministry of Transportation, British Columbia, Canada
Design-Build Contractor: Peter Kiewit Sons Co. / Flatiron Constructors
Consultants: T.Y. Lin International in collaboration with IBT
IBT's Role: Detailed design, construction engineering, construction supervision