Quensboro Bridge  aka Koch Bridge  is a cantilever double deck bridge over the East River.  This bridge has 2 separate cantilever spans over each side of the Roosevelt Island.  The bridge opened in 1909.

      The bridge connects Long Island City Neighborhood in.the burrough of.Queens with East Midtown and Upper East Side of Manhattan.

    On the upper level, pair of 2 lane roads.  Lower level with four vehicular lanes and a pedestrian lane and a bicycle.lane.

     The architects were Henry Hornbostel and Gustav Lindenthal.  The bridge was listed on.the National Register of Historic Places on December 20, 1978.

    Total length.was 7449 feet.  Width is 100 feet.  5 spans.