ABSTRACT
Bridge Weigh-in-motion (BWIM) is an established technology that allows estimating the wheel weights, axle spacing and velocity of travelling vehicles moving at full speed. It relies on the structural response of a bridge to infer the desired vehicle properties. These systems provide an enormous amount of information on the traffic’s characteristics that can be used to develop accurate site-specific road traffic models. However, BWIM technology has matured sufficiently and there is a trend to find additional uses, not only for the traffic data obtained, but also for existing instrumentation on the bridge. In particular, various recent publications suggest that the information extracted from such systems can also be used for the purpose of SHM. The integration of the vehicle loading characteristics should further extend the capabilities and reduce the cost of SHM systems.
