Almost 56,000 U.S. bridges structurally deficient: report

Almost 56,000 U.S. bridges are structurally deficient, down slightly from a year ago, with underperforming spans including New York's landmark Brooklyn Bridge, accord to a construction industry report released on Wednesday.About 1,900 structurally deficient bridges are on interstate highways and vehicles cross underperforming U.S. spans 185 million times a day, the analysis of federal data by the American Road and Transportation Builders Association found.