UPDATE: GoDCer Jerry has correctly pointed out that this is not the Aqueduct Bridge. The National Archives has mislabeled this and it’s actually the Pennsylvania Ave. bridge over Rock Creek. You can see it here. I know leave you to the rest of this incorrect post.

The bridge no longer exists and was dismantled in the 1920s, but a small part still stands on the D.C. side. This part of the bridge is crossing the canal, and is approximately where Key Bridge hits M St. today.

[Click here for larger, high-quality version.]
Aqueduct Bridge in the 1860s
Aqueduct Bridge in the 1860s

Source: Flickr user usnationalarchives

Tom founded Ghosts of DC on January 4th, 2012 as a blog to uncover the lost and untold history of Washington, D.C. He has lived in the city for over a decade and loves exploring every corner of the District.