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What caused the FIU bridge collapse?

Last updated November 23, 2021 by ZagBot Comment

The probable cause of the Florida International University pedestrian bridge collapse on March 15th, 2018, was load and capacity calculation errors by the bridge designers, according to a National Transportation Safety Board investigation.

The partially-constructed elevated foot bridge was being installed to improve pedestrian access across Southwest 8th Street, an eight-lane highway separating the FIU campus in University Park, a suburb west of Miami, Florida, and student housing neighbourhoods in the adjacent city of Sweetwater. During the days before the collapse, progressive cracking occurred in the post-tensioned concrete bridge, although its structural integrity was not thought to be compromised at the time.

On the afternoon of March 15th, re-tensioning of steel rods was underway when the structure catastrophically failed and the 950-ton, 174-foot span collapsed, crushing eight vehicles on the road below. One bridge worker and five vehicle occupants died, and ten other people were injured.

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FIU Pedestrian Bridge, Southwest 8th Street
Miami
Florida
33199
United States

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