Triboro Bridge: Fixed Truss Span
Perhaps the least glamorous part of the Triboro Bridge is the truss section connecting the Bronx with the main interchange on Randalls Island. The main span over Bronx Kill is a 383-foot-long subdivided Warren Truss span with a clearance above mean high water of 55 feet. The approach truss spans are 1,217 feet giving a total anchorage-to-anchorage length of 1,600 feet.
At the time of construction, Bronx Kill was not navigable and the Corps of Engineers permitted use of a fixed span with the proviso that it be built in a way that would permit conversion to a lift span at a later time. Subsequently much of Bronx Kill has been filled in to expand parkland, leaving the tidal estuary little more than a shallow canal. The Kill can be navigated by canoe between the Harlem River on the west and East River on the east at high tide.
Under the deck in Port Morris
Under the deck in Port Morris
Trusses leading away from Port Morris
One of the approach trusses in Port Morris
The handicapped accessible ramp on the west side of the bridge in Port Morris
Handicapped-accessible ramp
Non-handicapped-accessible pedestrian ramp on east side
Bicycle Riders Prohibited?
The pedestrian walkway on the east side of the bridge
One of the approach truss spans viewed from the pedestrian path
The eastern pedestrian path leading to the north tower
Art Deco detailing on one of the concrete bridge piers
Bronx Kill running east under the NYC Connecting Railroad approach to the Hell Gate Bridge
Pedestrian walkway descending onto Randalls Island
Northeast main span pier
Pedestrian walkways joining under the south approach
Bronx Kill under the truss span
Closeup of northeast pier
East walkway descending from the bridge
Pedestrian walkways joining under the south approach
Bronx Kill flowing from the west
Pedestrian walkways joining under the south approach
The truss span
The truss span
The truss span
Unused ramp to pedestrian walkway on the viaduct over the island