Presentation on theme: "Sarah Lewandowski & Lianna Groeneveld"— Presentation transcript:
1Sarah Lewandowski & Lianna Groeneveld Golden Gate Bridge
2Facts about the golden gate bridge Total length: Including approaches, 1.7 feetMiddle span: 4,200 feetWidth: 90 feetClearance above the high water :220 feet
3More facts Total weight today: 887,000 tons Towers: 746 feet above the water.500 feet above the roadway.Each leg is 33 x 54 feetTowers weigh 44,000 tons eachThere are about 600,000 rivets in EACH tower.
4Facts cont.The Golden Gate Bridge was the longest span in the world when it was finished, until the Verrazano Narrows Bridge was built in New York in Now,it still has the seventh longest main span in the world.The Golden Gate Bridge connects San Francisco with Marin County .
5Facts cont.It is a 1.7 mile-long suspension bridge that can be crossed by car, on bicycles or by foot.The Golden Gate Bridge is one of the most photographed, bridges in the world.After 4 years of construction, the golden gate bridge was completed at a cost of $35 million, and was opened to traffic on May 28, 1937 at noon.
6In comparison...Golden Gate BridgeBrooklyn BridgeBrooklyn bridge is the oldest suspension bridge is in the U.S.They both (the Brooklyn and the Golden Gate Bridge) were very dangerous when being built.Both had huge opening celebrations.Brooklyn use to have the longest span.Over 1,200 people have commited suicide on the golden gate bridge since 1939.Only 40 have commited suicide on the brooklyn
7The Steps of building the golden gate bridge The people voted weather or not to build the bridge.Work on the bridge began on January 5, 1933. The south pier had to be built 1,100 feet from land in water 65 feet deepFinished Pier, January 15, 1935At each end of the bridge an anchorage was built to receive the two cables.
8Steps continuedThe first concrete of the bridge was poured January 19, 1937.Just three months before opening day, a scaffold beneath the roadway broke loose, ripping through the net, making it fall into the water.Opening Day, May 27, 1937
9People who worked on the golden gate bridge 200 people worked on itThe engineer was Joseph B. StraussThe Bridge was built by 10 different prime contractors and their subcontractors.Eleven men died while working