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A fracture critical bridge is a bridge or similar span that is vulnerable to collapse of one or more spans as a result of the failure in tension of a single element. While a fracture critical design is not considered unsafe, it is subject to special inspection requirements that focus on the tension elements of its structure.
The bridge inventory is developed for having a unified database for bridges, including the identification information; bridge types and specifications; operational conditions; and bridge data including geometric data, functional description, inspection data, etc. Bridge type and specifications classify the type of the bridge.
List of toll bridges § United States; Category:Lists of bridges documented by the Historic American Engineering Record; Category:Lists of bridges on the National Register of Historic Places; Category:Lists of river crossings in the United States; Other topics. Transport in the United States; Rail transportation in the United States
Around 46,100 of the 617,000 bridges across the United States, or 7.5% of all bridges, ... The Key Bridge was “fracture critical,” the National Transportation Safety Board said Wednesday.
Bridges such as the one in Baltimore are classified as "fracture critical" by the federal government - meaning that if one portion of the bridge collapses, it's likely to take down the rest of the ...
This category includes articles on individual bridges found within the United States, subcategorized by the state in which it is located. Bridges that connect states are found in several subcategories.
But the Key Bridge is one of 17,468 fracture-critical bridges in the US out of 615,000 total bridges, she said, citing the Federal Highway Administration.
The bridge as seen while driving southbound, showing its curved trusswork. This photo was taken two weeks before the collapse. This steel through-truss bridge had a "fracture-critical" design with non-redundant load-bearing beams and joints that were each essential to the whole structure staying intact. An initial failure (perhaps by cracking ...