Assessment of the information gain of several monitoring techniques for bridge structural examination

Abstract The examination of existing civil structures must be differentiated from designing new structures. To have sustainable and circular asset management, the behavior these better understood to avoid unnecessary maintenance replacements. Monitoring data collected through bridge load testing, structural health monitoring, non-destructive tests may provide useful information that could significantly influence their structural-safety evaluations. Nonetheless, monitoring techniques are often elaborate, costs not always justify benefits gained. Additionally, it is challenging quantify expected gain before especially when combining several techniques. This paper proposes definitions metrics gained evaluate A full-scale case study in Switzerland used illustrate multiple On this structure, static tests, three years strain weigh-in-motion measurements, were performed between 2016 2019. on evaluated for each combination Results show technique provides unique optimal depends selected definition gain. When combined, significant reserve capacity determined.