The Walt Whitman Bridge is a green-colored single-level suspension bridge spanning the Delaware River from Philadelphia to Gloucester City, in Camden County, New Jersey, United States. Named after the poet Walt Whitman, who resided in nearby Camden toward the end of his life, the Walt Whitman Bridge is one of the larger bridges on the east coast of the United States. The bridge is owned and operated by the Delaware River Port Authority.Construction on the bridge began in 1953, and it opened to traffic on May 16, 1957. The bridge has a total length of 11,981 feet (3,652 m), and a main span of 610 metres (2,000 ft). The bridge has seven lanes, three in each direction and a center lane that is shifted variably (via a zipper barrier) to accommodate heavy traffic.