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.

Engineer Cal Miller's unauthorized attempt to close off the dangerously unstable Madison Bridge is foiled by the police pursuit of a robbery suspect.

The chase ends in a multi-car accident in the middle of the bridge, which begins falling apart during the confusion.

Miller organizes a rescue operation for the handful of bystanders who find themselves stranded with the armed suspect and a wounded policeman on a short stretch of crumbling pavement high atop a single collapsing pylon.