Four bridges over the Chesapeake and Delaware Canal have been designated as potentially at risk for collapse from ship strikes by the National Transportation Safety Board. The Summit, St. Georges ...

The Summit, St. Georges and Reedy Point bridges in Delaware and the Chesapeake City Bridge in Maryland were included in a list of 68 bridges nationwide recommended for vulnerability studies nearly ...

Over the last year, the NTSB identified 68 bridges built before 1991 that don't have a "current vulnerability assessment" and need to be evaluated. Latest U.S.

The list does not mean these bridges are more at risk for a collapse, but the agency urges evaluation of these important structures to observe how vulnerable they may be.

Among the bridges on the unassessed list is the same bridge whose collapse in 1980 spurred the development of the risk assessment standard — the Sunshine Skyway Bridge in Tampa, Florida.

Among the bridges on the unassessed list is the same bridge whose collapse in 1980 spurred the development of the risk assessment standard — the Sunshine Skyway Bridge in Tampa, Florida.