Golden Gate Bridge - History, Construction & Facts

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The Golden Gate Bridge images is a suspension bridge spanning the Golden Gate, the opening of the San Francisco Bay onto the Pacific Ocean. As part of both US Highway 101 and California Route 1, it connects the city of San Francisco on the northern tip of the San Francisco Peninsula to Marin County. The Golden Gate Bridge wallpaper is one of the seven wonders of the modern world and one of the wonders of the world.

The Golden Gate Bridge wallpaper hd had the longest suspension bridge span in the world when it was completed in 1937 and has become an internationally recognized symbol of San Francisco and California. Since its completion, the span length has been sumassed by eight other bridges. It still has the second longest suspension bridge main span in the United States, after the Verrazano-Namws Bridge in New York City.

The Golden Gate Bridge spans the Golden Gate, a narrow, 400 feet (120 meter) deep strait that serves as the mouth of the San Francisco Bay, between San Francisco at the northernmost tip of the San Francisco Peninsula, and the Marin Headlands at the far southern end of Marin County.

Although close by proximity, the two sides of the strait are separated by significant natural obstacles. Crossing the strait dfectly by boat is dangerous because of strong currents and lack of suitable landings. Ocean tides drive an average of 528 billion of water every six hours, at peak exceeding 5.6 miles per hour. The bridge has approximately 1,200,000 total rivets.

As the only road to exit San Francisco to the north, the bridge is part of both U.S. Route 101 and State Route I and on an average day 120,000 vehicles cross the bridge. The bridge has six total lanes of vehicle traffic, and walkways on both sides of the bridge. The median markers between the lanes are moved to conform to traffic patterns. On weekday mornings, traffic flows mostly southbound into the city, so four of the six lanes run southbound. Conversely, on weekday afternoons, four lanes run northbound.

While there has been discussion concerning the installation of a movable barrier since the 1980s, the Bridge Board of Directors, in March 2005, committed to finding funding to complete the two million dollar study required prior to the installation of a moveable median barrier. The eastern walkway is for pedestrians and bicycles during the weekdays and during daylight hours only, and the western walkway is open to bicyclists on weekday afternoons, weekends, and holidays.


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