Underdeck

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    The part of a bridge that lies beneath the deck, or surface.

    "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."

Example

More examples

"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."

Etymology

From under- + deck.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.