What Does Poor Rating For Collapsed Pittsburgh Bridge Mean For Others?

Infrastructure spending advocates note there are thousands of bridges across the U.S. with the same poor designation as the bridge that collapsed.

A 50-year-old bridge that collapsed in Pittsburgh had been rated as poor on a recent inspection report, but transportation officials and engineering experts cautioned that doesn't necessarily signal imminent danger for the thousands of other U.S. bridges with the same designation.

Investigators from the National Transportation Safety Board and the Federal Highway Administration have been combing through rubble from the collapse early Friday of the Forbes Avenue Bridge, looking for what caused it.

President Joe Biden, who was in Pittsburgh on Friday to promote a $1 trillion infrastructure law, said it was miraculous that there were no fatalities and that only a few people were injured.