National Transportation Safety Board investigators spent Saturday on scene investigating the bridge that collapsed in Pittsburgh.
The full investigation is expected to be"long" and"technical," according to the NTSB chairwoman Jennifer Homendy.Three people were hospitalized but no one was killed when the Fern Hollow Bridge collapsed before rush hour Friday. Five cars and a Port Authority bus were on the bridge when the bridge collapsed.
"Our mission here is to determine how this collapse happened, why it happened -- to prevent it from happening again," she said.National Transportation and Safety Board personnel approach one of the cranes that will be used as crews prepare for the cleanup after Friday's bridge collapse, Saturday, Jan. 29, 2022, in Pittsburgh.
"We want to see how the structure came to rest and we're looking for things like signs of corrosion, signs of fatigue cracking," she said.In addition to analyzing the wreckage at the scene, Homendy said her investigators will look at any video evidence and is looking to obtain any video taken from cameras inside the bus that was on the bridge at the time of the collapse.
"We're going to put this bridge under a microscope," Homendy said."We're going to look at the entire history of this bridge -- from the design, construction, maintenance repair, all work up until the day of the collapse."Onlookers look at the bus and vehicles below after Friday's bridge collapse Saturday, Jan. 29, 2022, in Pittsburgh.
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