Monitoring and evaluation of an interstate highway bridge using a network of optical fiber sensors

A multiplexed Bragg grating optical fiber monitoring system is designed and retrofitted to an in-service interstate highway bridge. The test bridge, the I-10 over University in Las Cruces New Mexico, is a two span continuous multi-girder steel bridge. A network of optical fiber Bragg grating sensors is used to monitor the strain at several locations in the bridge, with sensors bonded to the web and flanges of the girders. Preliminary data obtained from the system is evaluated. (A) For the covering abstract see ITRD E127016.