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A view of the support beams for the Pennsylvania Railroad bridge near the Ninth Street Bridge in downtown Pittsburgh. The Ninth Street Bridge, officially known as the Rachel Carson Bridge, is in the background.</div>
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Allegheny County Photography Department</div>
<a rel="nofollow" class="external free" href="https://historicpittsburgh.org/islandora/object/pitt:20180813-hpichswp-0029/">https://historicpittsburgh.org/islandora/object/pitt:20180813-hpichswp-0029/</a>