Chicago’s manhole covers have been made at same foundry since at least 1920
CHICAGO — Walk on any city sidewalk or street, and you’ll likely stroll over the works of Wisconsin-based company Neenah Foundry Co.
The foundry has been supplying Chicago with most of its manhole covers and inlet grates — which allow water to flow into below-ground sewers — since 1920, and possibly earlier than that. Chicago is one of the largest cities in the world where Neenah sends its products, Neenah engineer Ryan Bonell said.
“We found documentation [with Chicago] dating back to 1920, but it is possible we have provided castings dating back to 1904,” Bonell said. “In the last eight years Neenah Foundry has sold [more than $1 billion] worth of castings. The City of Chicago has accounted for a significant portion of these sales.”
Click to listen: