A structural engineering expert at Drexel University says there's already a big takeaway from the disaster.
A structural engineering expert at Drexel University says there's already a big takeaway from this.Dr. Abi Aghayere says it appears this span collapsed because of the exact spot where the fire erupted under the bridge.
"The thought that came to my mind is that it's a freak accident," Dr. Aghayere explains. "The question is: Should there have been fireproofing provided for this bridge section or any bridge section over a roadway?" Dr. Aghayere explains that when a fire occurs on top of a bridge, the steel is protected by the concrete roadway.
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