Walt Whitman, Ben Franklin bridges among 5 in Philadelphia area to be evaluated for collapse risk, NTSB says
An NTSB list of 68 bridges that should be evaluated for collapse risk includes five in the Philadelphia area that cross the ...
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Walt Whitman, Ben Franklin bridges among 5 in Philadelphia area to be evaluated for collapse risk, NTSB says
These are the five Philadelphia-area bridges that NTSB says will need an assessment: Benjamin Franklin Bridge, built in 1926 Delaware River Turnpike Bridge, built in 1956 Walt Whitman Bridge ...