An Innovative Bridge Inspection Technique through Drive-by Vehicles – A Special Application on Prestress Loss Identification

Prestress force loss in prestressed concrete bridge is inevitable; however it is the amount of the prestress force loss matters, which determines the safety of load-carrying members.More than 60% of all new and replaced bridges built in US are prestressed concrete bridges since the year 2000, which demands a fast and accurate inspection technique to monitor their prestress loss.