To the south you can see the Park Avenue Bridge, a lift bridge that carries the Metro-North Railroad, including the line beneath Morrisania Air Rights, over the Harlem River between Manhattan and the Bronx. The Madison Avenue Bridge, on the other hand, is a swing bridge. When open, its turning span aligns with the wooden structure visible here, which provides both protection from oncoming vessels and easy access to the underside of the bridge for maintenance.
Day 31
Crossing the Madison Avenue Bridge
January 30th, 2012
Another excellent shot.
You captured quite a lot in this photo, and appreciate the well-annotated description, too, as always.