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hipoetry t1_j29gz16 wrote on December 30, 2022 at 4:50 PM

I don't know, but I found this article on old manhole covers in DC. Some are from the 1800s! Pretty cool.https://ggwash.org/view/62399/theres-history-to-behold-on-some-of-dcs-old-manhole-covers

Shonuff8 t1_j2bf2d0 wrote on December 31, 2022 at 12:30 AM

Can confirm, have seen some of the sewer manholes stamped with 1880-90 dates around the Navy Yard area.