Verrazzano-Narrows Bridge Island with the rest of the city. Various issues delayed the start of construction until 1959. The bridge opened on November 21, 1964, and a second deck beneath the existing span was opened in June 1969. The New York City government began a $1.5 billion reconstruction of the bridge's two decks in 2014. The Verrazzano-Narrows Bridge has a central span of . It was the longest suspension bridge in the world from 1964 until it was surpassed by the Humber Bridge in the United Kingdom in 1981. The bridge has the 13th longest main span in the world, as well
Underspanned suspension bridge heavy cross-braces. The only remaining underspanned Suspension bridge in the United States is the Kellams Bridge crossing the upper Delaware River between New York and Pennsylvania. Underspanned suspension bridge An underspanned suspension bridge (also upper deck suspension bridge) is a rare type of suspension bridge that was developed in the early 19th century. It differs from its ancestor, the simple suspension bridge, in that the deck is raised on posts above the main cables. The raised deck is less stable than a deck laid on or hung below the cables, and very few underspanned suspension bridges have been built. Examples