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I think Brooklyn Bridge wonder of the world because of its unique design and construction of an interesting story. Many refer to this bridge an example of the industrial power of the United States of the 19th century, and the crowning of progress for its time.
Length of the bridge - 1825 meters, width - 26 meters and a maximum height above the waters of the East River - 41 meters. Bridge Road hold four fabric rope diameter of about 40 centimeters, and each of them consists of more than 5000 steel strands. These carrier cables rely on two built in the Gothic style pylon towering over the water at 84 meters.
In 1855, engineer John Roebling suggested that the city authorities project a suspension bridge, which, after much debate, was adopted only in June 1869. Soon during the examination site of the future construction of John Roebling was seriously injured and died. Guide the construction of the bridge passed to his son, Washington Roebling.
In January 1870, work began on construction of the bridge. At the bottom of the strait lowered huge airtight cylinders - caissons. Of these, pumped water, dredged mud and started the construction of towers. The caissons people suffered from many illnesses, fires and explosions, twenty people died and several were seriously injured, including Washington Roebling. Now the construction site commanded his wife, Emily. It not only passed on instructions to workers paralyzed husband, but also to study higher mathematics, strength of materials and other engineering disciplines required for the control of construction.
Construction of the bridge was completed in 1883 and on May 24, he was inaugurated, the first held by him Emily Roebling. Now traffic on the Brooklyn Bridge allowed for cars, pedestrians and cyclists. Brooklyn Bridge is the only bridge of its time, does not require reconstruction, thanks to the unique structure of ligaments, which, without knowing it, was designed by Roebling. Additional support cables were built just for reassurance, and perform more aesthetic role, making Brooklyn Bridge even more original. Unique in its design, this bridge in the Gothic style is considered also an architectural masterpiece to emphasize this fact, the special illumination was installed, which emphasizes the benefit main aesthetic features of the building. Today, the Brooklyn Bridge is listed in the list of major US national interest,
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