Did you know? The Spirit of America’s keel is built with steel from the World Trade Center towers. The boat entered service in 2006.
Water from 40 miles away in Westchester County used to cross the bridge en route to a reservoir in Manhattan. Completed in 1848, it’s the oldest bridge in New York City.
Did you know? The Manhattan Bridge was the first suspension bridge built on deflection theory. It opened to traffic on December 31, 1909. 続きを読む
The Williamsburg Bridge was the first bridge with all-steel towers. The 310-foot steel towers support four cables, each measuring 18 inches in diameter and weighing 4,344 tons!
