The Third Avenue Bridge is a swing bridge that carries southbound road traffic on Third Avenue over the Harlem River, connecting the boroughs of Manhattan and the Bronx in New York City.

On the Manhattan side, the bridge funnels traffic into three locations: East 128th Street; the intersection of East 129th Street and Lexington Avenue; or FDR Drive in Manhattan.

[5] As part of a major NYCDOT reconstruction project from 2001-2005, a new swing span was floated into place on October 29, 2004.

The New York City Fire Department sprayed water onto the bridge to cool it down.

[8] The Third Avenue Bridge carries the M125 bus route operated by MTA New York City Transit.