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Private company

Hardesty & Hanover

Logo: Hardesty & Hanover, CC BY-SA 4.0, via Wikimedia Commons3

Transportation engineering company in New York City

H&H is an American infrastructure engineering company specializing in the design and management of bridges and other transportation and architecture projects. The firm was founded in 1887 by John Alexander Low Waddell, a structural engineer who pioneered the design of large-scale moveable bridge.2 Wikipedia text CC BY-SA 4.0

Last updated Oct 21, 2026.

Overview

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H&H is an American infrastructure engineering company specializing in the design and management of bridges and other transportation and architecture projects. The firm was founded in 1887 by John Alexander Low Waddell, a structural engineer who pioneered the design of large-scale moveable bridge.2

The story

Founded by John Alexander Low Waddell.1

Leadership

Who has led Hardesty & Hanover, and when. Pick a name to see everywhere that person has worked.

Sources

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