Agency to announce suspected cause of 2022 bridge collapse over a Pittsburgh ravine

FILE – A Port Authority bus and a car that were on a bridge when it collapsed Friday Jan. 28, 2022, are visible in Pittsburgh’s East End. Federal regulators are about to determine what they believe caused a bridge to collapse in Pittsburgh more than two years ago, sending vehicles plummeting into a ravine and injuring several people. (AP Photo/Gene J. Puskar, File)