By Ben Fractenberg
The bridge started its trip on July 13 from Albany with the help of two barges. It will travel up the East River under the Brooklyn Bridge on its route to the Harlem River.
The $612 million restoration of the 109-year-old Willis Avenue Bridge, which connects Harlem to the South Bronx, is scheduled for completion in 2012.
The replacement swing bridge will allow the connection to remain open during construction.
Construction of the new bridge is scheduled to begin Aug. 2.