Nearly 56,000 bridges in the US are listed as structurally deficient List, according to new analysis of Federal Data by American Road & Transportation Builders Association (ARTBA). An analysis of the US Department of Transportation’s (US DOT) recently-released 2016 National Bridge Inventory data finds cars, trucks and school buses cross the nation’s 55,710 structurally compromised bridges 185 million times/day. About 1,900 are on the Interstate Highway System. State transportation departments have identifie