underdeck

English

Etymology

From under- +‎ deck.

Pronunciation

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Noun

underdeck (plural underdecks)

1. The part of a bridge that lies beneath the deck, or surface.
   • 2007 August 13, Samuel I. Schwartz, “Catch Me, I’m Falling”, in New York Times‎^[1]:

     During my nearly 20 years as an engineer with the New York City Department of Transportation, I witnessed numerous bridge failures, including the collapse of the West Side Highway in 1973, the fatal snap of a Brooklyn Bridge cable in 1981, and the 1989 fall of a concrete slab from the underdeck of Franklin D. Roosevelt Drive, which crushed a Brooklyn dentist in his car.