bridge+project

__Golden Gate. __

Project link: []

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__Bridges:__ they are structures that connect one part of a place to another for people and vehicles to get across an obstacle or long distances easily and in a shorter time. The design will vary depending of its use and its materials. Usually bridges are made of wood, concrete, steel, bricks, stone, etc.

__Types of bridges:__ The beam bridge The arch bridge The suspension bridge

The importance of a bridge in a town, city, etc., is that it communicates to different places and make possible for people to go to one place to another and interact with different cultures, get stuff that they won’t find on their own homeplaces, etc. The construction involves precision, hours of work and physics knowledge.

Linking San Francisco with Marin County the Golden Gate Bridge is 8,981 feet long suspension bridge that can be crossed by car, on bicycles or on foot
 * __The Golden Gate. __**

The Golden Gate Bridge Construction began on January 5, 1933. The project cost more than $35 million. The project was finished by may 1937 when it opened to vehicular traffic on May 28 at twelve o'clock noon when President Franklin D. Roosevelt pressed a telegraph key in the White House announcing the event.

The Golden Gate Bridge construction project was carried out by the McClintic-Marshall Construction Co., founded by Howard H. McClintic and Charles D. Marshall

Strauss remained head of the project, overseeing day-to-day construction and making some groundbreaking contributions.

One of the most interesting Golden Gate Bridge facts is that only eleven workers died during construction, a new safety record for the time. In the 1930s, bridge builders expected 1 fatality per $1 million in construction costs, and builders expected 35 people to die while building the Golden Gate Bridge. One of the bridge's safety innovations was a net suspended under the floor. This net saved the lives of 19 men during construction, and they are often called the members of the "Half Way to Hell Club."

The Golden Gate Bridge design echoes an Art Deco Theme. Wide, vertical ribbing on the horizontal tower bracing accents the sun's light on the bridge

<span style="font-family: 'Lucida Sans Unicode','Lucida Grande',sans-serif; font-size: 150%;">The towers that support the Golden Gate Bridge's suspension cables are smaller at the top than at the base, emphasizing the tower height of 500 feet above the roadway.

<span style="font-family: 'Lucida Sans Unicode','Lucida Grande',sans-serif; font-size: 150%;">The bridge's two towers rise 746 feet making them 191 feet taller than the Washington Monument.

<span style="font-family: 'Lucida Sans Unicode','Lucida Grande',sans-serif; font-size: 150%;">The five lane bridge crosses Golden Gate Strait which is about 400 feet deep. Simple yellow markers are used to switch the center lane so that there are three lanes into San Francisco for the morning commute and three leaving The City in the afternoon and evening.

<span style="font-family: 'Lucida Sans Unicode','Lucida Grande',sans-serif; font-size: 150%;">The center span was the longest among suspension bridges until 1964 when the Verrazano-Narrows Bridge was erected between the boroughs of Staten Island and Brooklyn in New York City, surpassing the Golden Gate Bridge by 60 feet. The Golden Gate Bridge also had the world's tallest suspension towers at the time of construction and retained that record until more recently. In 1957, Michigan's Mackinac Bridge surpassed the Golden Gate Bridge's total length to become the world's longest two-tower suspension bridge in total length between anchorages, but the Mackinac Bridge has a shorter suspended span compared to the Golden Gate Bridge.

<span style="font-family: 'Lucida Sans Unicode','Lucida Grande',sans-serif; font-size: 150%;">The weight of the roadway is hung from two cables that pass through the two main towers and are fixed in concrete at each end. Each cable is made of 27,572 strands of wire. There are 80,000 miles of wire in the main cables.