Detail of the center swing span of the Amtrak Susquehanna River Bridge (originally built by the Pennsylvania Railroad).  Other bridges visible in this photograph, foreground to background, are: the Thomas J. Hatem US 40 highway bridge, the CSX/B&amp;O railroad bridge, and the Millard E. Tydings I-95 highway bridge.
Photograph taken by Jack E. Boucher for the Historic American Engineering Record
1977-04
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