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The Port Mann Bridge is one of British Columbia’s most significant bridge structures, carrying the Trans-Canada Highway (Canada’s Highway 1) across the Fraser River to the west of Vancouver. As part of the major Port Mann Highway 1 project, which also includes the widening and upgrading of 23 miles (37km) of highway, the bridge is currently being replaced with a new structure, to be opened to traffic at the end of 2012.
The new bridge will carry 10 lanes of traffic, and with its main span of 514 yards (470m) length it will be the second longest cable-stayed span in North America. At 55 yards (50m) wide, the new bridge will also be the widest long span bridge of any type in the world.
mageba has delivered the modular expansion joints required for the entire bridge including both approaches. The joints have up to 11 movement gaps and thus can facilitate movements of up to 35 inches (880mm). Several joints, in noise-sensitive areas, are equipped with noise-reducing “sinus plates” on the surface.
mageba also supplied, in cooperation with R.J. Watson Inc., disc bearings for the bridge. These are designed for loads of up to 19,000 kN and a number feature “double discs” to achieve this load capacity.
The use of “sinus plates” can reduce the noise from over-rolling traffic by up to 80 % by covering the straight transverse gaps in the carriageway
TENSA-MODULAR expansion joints
max. movement 880 mm, some featuring "sinus plates"
Transportati on Investment Corporation
Kiewit Flati ron General Partnership