Federal officials will examine the bridge's “entire history” from design and construction, to maintenance and repair until the day of the collapse.
PITTSBURGH - Federal investigators on Saturday vowed to put a collapsed bridge in a Pittsburgh park “under a microscope” as they examine evidence, including video from a municipal bus that plummeted along the span, prompting rescuers to rappel down a ravine and form a human chain to reach a few occupants.
A crash reconstructionist on Saturday used a drone to map the scene and investigators made an initial inspection of the structure and the legs under the deck of the bridge, looking for signs of corrosion and fatigue cracking and also wanting to see how the structure came to rest. Investigators were also trying to identify areas for closer inspection and may want to take pieces back for laboratory analysis, she said.
“When I look at the bus, and the position of the bus and the position of the vehicles, I’m really thankful that no one lost their lives,” Homendy said.
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