These were taken from the NYC-bound platform at the Spuyten Duyvil Metro-North Railroad station. The official name of the bridge is the "Inwood Movable bridge." Thanks to Jersey Mike for that info.

The middle (swing) span of the Spuyten Duyvil swing bridge. Photo taken by Brian Weinberg, 8/2/2005.
The middle (swing) span of the Spuyten Duyvil swing bridge. Photo taken by Brian Weinberg, 8/2/2005.
The middle (swing) span of the Spuyten Duyvil swing bridge. Photo taken by Brian Weinberg, 8/2/2005.