Real-Time Stress Monitoring of Highway Bridges with a Secured Wireless Sensor Network

This research is to monitor the stress of highway bridges in Mahoning County with a light-weight and reliable wireless sensor network by applying state of the arts technologies in wireless networks, sensor technologies, peer-peer communications, embedded systems, and power managements. Due to the degradation of bridge materials, such as concrete and steel, the deflections of the bridge deck due to stress increases during the life span of the bridge. In the proposed Phase I period, a fixed wireless mesh network with twenty sensor nodes and one centralized server will be built and tested on the bridge deck. Wireless nodes will be five meters apart from each other, and the related stress of the bridge over 50 meters span will be collected and mapped. Computer software will be developed to analyze the collected data, evaluate the structural health of the bridge, and predict future longevity of the highway bridge.