3.-+Bridges-Project


 * //__GOLDEN GATE BRIDGE, SAN FRANCISCO, CALIFORNIA __//**

Golden Gate Bridge is one of the most famous bridges in the United States of America, located in California, connecting the northern peninsula of San Francisco to southern Marin County and constructed with a length of 2,737 meters above the Strait "Golden Gate", which gets its name. And at a height of 243 meters above sea level.  The construction of the bridge began on January 5, 1933 under the Works Projects Administration program (WPA), a public works program initiated by the government of Franklin D. Roosevelt in period of the Great Depression. The project chief was engineer Joseph Strauss. It was also at the time of its completion in 1937, the longest suspension bridge, and remained so for 27 years. The initial work cost $ 35 million at the time.  Hung between two elegant towers, the two main cables of the bridge weighing 11,000 tons each, and consist of 25,000 individual wires. Besides supporting the suspended street, cables transmit compression to the towers and mooring of the bridge on either end of the building. And the mooring on each side were foundations in steel.  It has a six-lane road (three in each direction) and has protected lanes for pedestrians and bicycles available. The bridge also carries for a canal and for the other large the amount of energy required for the development of the area where power lines and fuel lines.  With its characteristic color, which harmonizes with the beauty of the surrounding landscape. It is said that the Golden Gate bridge is one of the most photographed objects in the world.  San Francisco has the Golden Gate Bridge not only a major engineering work as a means of transport, but also one of the main symbols that identify the city of western California, U.S..