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Tsable River Bridge

Vancouver Island, British Columbia

Market Sector

Bridge

Type

Segmental

Services Provided

Construction Phase Services, Design

Region

Americas

T.Y. Lin International designed this 400-meter-long, four-lane highway bridge that crosses the environmentally sensitive Tsable River Valley 60 meters above the valley floor. The Tsable River Bridge is one of the largest single-cell box structures in North America.

Project Highlights:

  • The Tsable River Bridge is one of the largest single-cell box structures in North America.

Because the bridge is located in an area of seismic activity, engineers took great care in reducing the weight of the superstructure as much as possible. The single-cell box girder configuration eliminated the need for a central web wall, thus minimizing the amount of concrete needed to construct the bridge.

Minimizing environmental impact also played a key role in determining the structure type, and engineers found that the simplified single-cell design allowed construction to take place at the top of the gorge, without compromising old-growth trees on the valley floor and damaging the salmon-rich river below.

Awards
Honor Award, 2000
Consulting Engineers and Land Surveyors of California (CELSOC)
National Honor Award, 2000
American Council of Engineering Companies (ACEC)
Engineering Excellence Award, 1999
Consulting Engineers of British Columbia (CEBC)