Repair crews discover 200-year-old wooden water mains in Center City

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The repair work was routine: Replacing a water line on the 900 block of Spruce Street.


What workers found as they dug up the ground was a little more unusual: What looked like old tree trunks.

And what those logs actually were is a bit of history that can only found be found in old cities like Philadelphia: 200-year-old wooden water mains.





The wooden pipes found Wednesday were likely installed around 1812, according to an account of their discovery from the Philadelphia Water Department.

The historic nature of the find was brought to the department’s attention by a passerby. Julie Snell, a self-described “tree geek” who teaches a Temple University class on urban ecosystems, saw the scene while biking and contacted Water Department historian Adam Levine, whom Snell had previously heard speak about wooden water mains.

Snell’s intervention led to the wooden mains being saved for use in educational demonstrations, the department said.




Spruce Street Wooden Water Mains Uncovered

The wood pipes were apparently laid on “Back of Spruce, from Ninth to Tenth” between October 1811 and October 1812, according to a report from the department’s archives. The department said Levine’s research showed that the wood pipe there was replaced in 1831 by a 12-inch cast-iron main. 




Philadelphia began installing cast-iron pipes in 1819 and took its last wooden pipes out of service in 1858, though the pipes were not necessarily removed as they stopped being put to use.



















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