Chicago’s manhole covers have been made at same foundry since at least 1920

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Neenah Foundry in Wisconsin has been making iron products for Chicago since at least 1920, and possibly earlier. (Neenah Foundry / via DNAinfo)

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.

Click here for more on this story from DNAinfo.

“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.”

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