Filmed in 1979 and scheduled for broadcast in 1980 but not broadcast until 1983.
Aired the same night as the final episode of MASH, "Goodbye, Farewell and Amen".
The brief opening scenes of the fictional Madison Bridge are the Astoria-Megler Bridge (U.S. Route 101), which spans the Columbia River between Oregon and Washington.
At 3m 05s on part one you can see the camera on the lower right hand side of the screen, capturing the squash action from a different angle.