lesson17

The longest suspension

Verrazano , an Italian about whom little is known ,sailed into New York Harbour in 1542 and named it Angouleme. He described it as 'a very agreeable situation located within two small hills in the midst of which flowed a great river'. Though Verrazano is by no means considered to be a great explorer, his name will porbably remain immortal, for on November 21st, 1964, the longest suspension bridge in the world was after him.
The Verazano Bridge , which was designed by Othmar, which was designed bt Othmar Ammann, joins Brooklyn to Staten Island. It has a span of 4260 feet. The bridge is so long that the shape of the earth had to be taken into account by its designer. Two great towers support four huge cables . The towers are built on immense underwater platforms make of steel and concrete. The platforms extend to a depth of over 100 feet under the sea . These alone took sixteen months to build Above the surface of the water , the towers rise to a height of nearly 700 feet . They support the cables from which the bridge has been suspended .Each of the four cables contains 26108 lengths of wire .It has been estimated that if the bridge were packed with cars ,it wound still only be carrying a third of its total capacity However ,size and strength are not the only important things about this bridge.Despite its immensity, it is designer's dream to create 'an enormous object drawn as faintly as possible .'