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Smart design and super materials are stretching bridges

from Popular Mechanics

In December, the world's widest cable-stay bridge, weighing more than 72,000 tons and measuring more than 213 feet wide, opened to traffic. Port Mann Bridge, outside Vancouver, British Columbia, is the second-longest cable-stay span in North America at 2800 feet, but this is no suspension bridge as is the Brooklyn Bridge or the Golden Gate. Port Mann is the evidence of cable-stay bridges taking over - and doing the job for less - where once only suspension bridges came to play. more

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