Durable materials, creative designs make longer bridges

01/4/2013 | PopularMechanics.com

The use of more durable concrete, stainless-steel rebar, post-tensioned steel strand and smart designs could allow construction of "cheaper, cable-stayed bridges to cover longer spans," according to this piece. Advanced carbon-composite technology could allow cable-stayed bridges to continue to be built at increasingly longer lengths. "As man has more experience, accumulates more research data and better analytical tools, the spans keep going higher and higher," said Patrick Cassity, vice president of Parsons, designer of Washington state's New Tacoma Narrows Bridge and the John James Audubon Bridge in Louisiana. "It feeds into man’s natural ego to build the longest spans ever."

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