Williamsburg Bridge

The Williamsburg Bridge is one of the major crossings of the East River, carrying approximately 140,000 motorists, 92,000 transit riders, 600 bikers and 500 pedestrians between the boroughs of Manhattan and Brooklyn and serving some of the busiest arteries in New York City. When it opened in 1903, the Williamsburg Bridge was the longest suspension bridge in the world, with a span of 1600 feet and a total length of 7308 feet and the first with all-steel towers. The 310-foot steel towers support four cables, each measuring 18_ inches in diameter and weighing 4,344 tons. In all, nearly 17,500 miles of wire are used in the cables that suspend the bridge 135 feet above the East River. The massive stiffening trusses were designed not only to withstand high winds, but also to support rail traffic on the deck. The bridge links the New York City boroughs of Manhattan and Brooklyn. Carrying rail, trolley and roadways for carriages and pedestrians, it was one of the last major bridges designed for the horse and carriage. By the 1920s, the automobile was the major mode of transportation and the trolley tracks were replaced with roadways.Currently, the bridge carries four two-lane vehicular roadways, a South Roadway (Inner and Outer) and North Roadway, (Inner and Outer), with two rapid transit tracks (J,M.Z, subway lines) sandwiched in between. A walkway and a bikeway also runs across the bridge.