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Uploaded on Jul 20, 2011
COLLEGE PARK, Md. - Millions of U.S. drivers cross faulty or obsolete bridges every day, U.S. highway statistics show, but it's too costly to fix all these spans or adequately monitor their safety, says a University of Maryland researcher who has developed a new, affordable early warning system.
This wireless technology could avert the kind of bridge collapse that killed 13 and injured 145 along Minneapolis' I-35W on Aug. 1, 2007, he says - and do so at one-one-hundredth the cost of current wired systems.