Integration of Remote Sensing Data with Bridge Geometric and Numerical Models for Detection of Unusual Behaviours.

Bridge owners are faced with the challenge of maintaining an ageing and deteriorating asset portfolio. There is an increasing amount of InSAR data becoming available for built environment monitoring, with the opportunity to leverage free ESA Sentinel-1 data for regular monitoring. By understanding the potential to augment existing modelling tools used in common bridge engineering practice, InSAR can provide valuable additional insights and spot potential problems. In this paper we study Hammersmith Flyover, a concrete bridge in London, United Kingdom. We combine geometric models, structural models and InSAR data within a GIS environment and demonstrate how these systems can be used to regularly monitor specific behaviors including thermal expansion.