MARTA CN915 BRIDGE

The MARTA CN915 light rail bridge experienced cracking and various structural deficiencies. This project consisted of preparing bridge strengthening plans using carbon fiber polymer (CFRP) and installing a 128-channel remote monitoring data acquisition system. The instrumentation consisted of strain and temperature sensors and was distributed over four spans that formed one of the bridge’s continuous units. A full 3-D finite element analysis was performed prior to proceeding with the instrumentation plan. SDR also conducted onsite load testing and has been remotely monitoring the bridge behavior since 2008.