The Night the Bridge Fell Down is an American disaster film starring James MacArthur, Desi Arnaz Jr., and Leslie Nielsen. The movie was produced by Irwin Allen in 1979 in association with Warner Bros. Television for NBC but was not aired in the United States until February 28, 1983 – the same night the final original episode of M*A*S*H ("Goodbye, Farewell and Amen") aired on rival network CBS. (ABC showed American Gigolo).

The fictional Madison Bridge is represented by the Astoria-Megler Bridge on the Columbia River, the longest continuous truss bridge in North America.