Over the last year, the NTSB identified 68 bridges built before 1991 that don't have a "current vulnerability assessment" and ...
The NTSB said that nearly 70 bridges should be assessed to prevent a catastrophe like the one that happened when a container ...
The National Transportation Safety Board says dozens of bridges are vulnerable to collapse, a determination it made as it investigated what led to the failure of the Francis Scott Key Bridge in ...
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