High Quality Content by WIKIPEDIA articles! The Poughkeepsie Bridge (a.k.a. Poughkeepsie Railroad Bridge, Poughkeepsie-Highland Railroad Bridge, High Bridge) is a steel cantilever bridge spanning the Hudson River between Poughkeepsie, New York on the east bank and Highland, New York on the west bank. Built as a double track railroad bridge, it was completed on January 1, 1889, and went out of service on May 8, 1974. It was listed on the National Register of Historic Places in 1979, updated in 2008. It was opened as Walkway Over the Hudson State Historic Park on October 3, 2009 as a pedestrian walkway, making it the longest footbridge in the world.