Uploaded on 2014-10-20 by Zayyanshah

The Golden Gate Bridge is a suspension bridge spanning the Golden Gate strait, the mile-wide, three-mile-long channel between San Francisco Bay and the Pacific Ocean. The structure links the U.S. city of San Francisco, on the northern tip of the San Francisco Peninsula, to Marin County, bridging both U.S. Route 101 and California State Route 1across the strait. The bridge is one of the most internationally recognized symbols of San Francisco, California, and the United States. It has been declared one of the Wonders of the Modern World by the American Society of Civil Engineers. The main materials used to make the Golden Gate Bridge were 75,293,000 kg of steel; two main cables, each made of 27,572 strands of wire; 600,000 rivets in each of the towers; and concrete. The steel was made in New Jersey, Maryland and Pennsylvania and shipped through the Panama Canal. New Jersey, Maryland and Pennsylvania would have greatly benefitted from mass production of steel. As well as the concrete that is produced in Mansfield which had brought immense economic benefits to it. [1]: https://edxuploads.s3.amazonaws.com/14138071494186607.jpg