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An image of the construction of the retaining wall for the Liberty Bridge's northern approach near Forbes Avenue. Buildings along Shingiss Street can be seen in the image</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-0096/">https://historicpittsburgh.org/islandora/object/pitt:20180813-hpichswp-0096/</a>