As with previous inspections, the Sept. 29 examination rated the steel K-frame bridge a 4 on a scale from 0 to 9, which is deemed a poor rating.
“This bridge’s design relies on the quality of frame elements alone without any back-up support [known as redundancy] and reports show deterioration that did not warrant closure, but supported the imposition of a posted weight limit to restrict the weight of loads,” Campbell said in an email.is one of six bridges with similar designs in the state. Campbell said the reasons it failed and collapsed remain unclear and are the subject of investigations.
There were no fatalities, but a few people required hospital treatment, and as of Monday one adult was still getting care inside a UPMC facility, a hospital system spokesperson said. Tyrone and Velva Perry’s windshield cracked and their airbags deployed, Erin Perry said. When Tyrone Perry saw the bridge buckling, he figured he was about to die.She said the Pittsburgh couple both suffered fractured vertebrae and were in a lot of pain but good spirits. Tyrone Perry sees the collapse whenever he closes his eyes, and Velva Perry still has a feeling she is falling.
Natural gas lines along the bridge ruptured, causing a large gas leak and evacuation of nearby homes.
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