Shamim Pakzad, a professor at Lehigh University in Pennsylvania, and his students are studying the structural integrity of the Easton-Phillipsburg free bridge using wireless sensor networks. "They’re the equivalents of iPhones in communication," Pakzad
said. The small, battery-operated sensors can "make it easier to monitor a structure and allow inspectors to invest less money and time into structures, and achieve the same results," according to one doctoral student.

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