The Golden Gate Bridge was the world's longest suspension bridge once it was completed. For over 30 years, it was the world's longest suspension bridge. The Golden Gate Bridge spans 1,280 meters. It connects San Francisco, California, to Marin County, California, and is part of the Golden Gate National Recreation Area. The main span is 565 feet long with 29 traffic lanes.
The Hoover Dam Bridge is the longest cable-stayed bridge in the United States. It carries four lanes of automobile and pedestrian traffic across the Colorado River between Arizona and Nevada. The main span is 717 feet long with 14 traffic lanes.
The Zhongshan Bridge is the longest cable-stayed bridge in China. It crosses the Zhujiang River near the center of Guangzhou city and connects the southern Chinese province of Guangdong with the northern city of Jiangmen. The main span is 984 feet long with 24 traffic lanes.
The Akashi Kaikyo Bridge is the longest cable-stayed bridge in Japan. It crosses the Kaiyō Canal near the center of Tokushima City on the island of Shikoku and connects the cities of Tokushima and Ono. The main span is 1020 feet long with 16 traffic lanes.
The Queen Elizabeth II Bridge is the longest cable-stayed bridge in the world.
4,200-foot According to the website, "from the time of its construction in 1937 until New York City's Verrazano Narrows Bridge opened on November 21, 1964, the 4,200-foot long suspension bridge of the Golden Gate Bridge was the largest span in the world."
The Golden Gate Bridge is still the longest suspension bridge. The world's second-longest suspension bridge, the Zhongshan Bridge in China's Guangzhou city, is only 930 feet long. The third-longest suspension bridge, the Huaning Bridge in China's Guizhou province, is only 870 feet long.
The Verrazano-Narrows Bridge, which connects Brooklyn to Staten Island, New York, has a main span of 1,595 feet but also includes outriggers that add another 2,000 feet to its length. The Golden Gate Bridge was originally planned as a three-span structure with main spans of 1,000 feet, but after tests showed it would be too heavy for its anchors, the designers increased the number of spans to four. A fifth span was added later when it was realized that the weight of the original design could not be supported by the existing towers.
The main challenge in building the Golden Gate Bridge was finding a way to support its massive weight over an extremely busy body of water.
According to the website, "from the time of its construction in 1937 until New York City's Verrazano Narrows Bridge opened on November 21, 1964, the 4,200-foot long suspension bridge of the Golden Gate Bridge was the largest span in the world."
However, the claim is not accurate. The claim assumes that the Golden Gate Bridge was a single structure from end to end when in fact it has three separate sections: the north tower, the central section, and the south tower.
The central section is 1 mile long and connects the north and south towers. The southern section is 0.5 mile long and connects with the northern section at its eastern end. The western end is disconnected from the rest of the bridge by the tidal waters of the Bay Area Ocean.
When it was first built, the Golden Gate Bridge was believed to be a revolutionary new design capable of withstanding powerful winds and huge loads. Its main cable was said to be made of stainless steel wire with a diameter of only 3/8 of an inch - almost invisible today but then considered incredibly strong. The roadbed under the bridge was also supposed to be unique. It was made of thick reinforced concrete which to this day is used as a standard for other bridges.
But within a few years it became clear that the bridge was not durable enough to last forever.
It was the world's longest suspension bridge, dethroning San Francisco's Golden Gate Bridge, and it is still the longest in the United States. Its central section, which connects the two 693-foot towers, runs 4,260 feet. The main span is 1,595 feet.
Its construction began on July 16, 1964, and it was opened to traffic the following year. The total cost was $150 million at that time; today it would be about $7 billion. It is part of Interstate 95, which runs from Maine to Florida; however, no longer than most other major bridges over this route. The Verrazano-Narrows Bridge has three separate ownership entities: the New York State Department of Transportation, which owns the roadway portion; the Port Authority of New York and New Jersey, which owns the land under the bridge; and finally Columbia University, which operates the university center in Manhattan as its headquarters.
The bridge is named after Giovanni Antonio da Verrazano, an Italian explorer who discovered the future site of Brooklyn in 1524. He also probably first saw the Narrows, now a body of water between New York City and New Jersey, and they thought very dangerous at the time. Later explorers confirmed that this area was not only safe for vessels to pass through, but was in fact a great place for trade with the indigenous people.
Golden Gate Bridge The Golden Gate Bridge, a 1.7-mile-long symbol of the San Francisco Bay region, links San Francisco to Marin County, California. When it was finished in 1937, the suspension bridge was regarded as an engineering wonder, with the longest main suspension bridge span in the world. It has been listed on the National Register of Historic Places.
The Golden Gate Bridge is the only remaining link between San Francisco and Marin County. In addition to being a major transportation asset and popular tourist attraction, the bridge also plays an important role in keeping San Francisco connected to its surrounding sister cities to the east. Without this vital connection, commuters would have no way to get to their jobs in less than an hour, students would be denied access to university campuses, and visitors to San Francisco's famous landmarks could not reach them easily.
Originally known as the Golden Gate International Exposition Bridge, the iconic structure was built by the American Bridge Company for $33 million ($150 million in today's dollars). Its length at that time was considered a record for a steel arch bridge. The main purpose of the bridge was to connect San Francisco to the newly constructed city of Sausalito, which is adjacent to Marin County. It does so by crossing the estuary of the same name. The bridge's official name was changed in 1975 to honor the site where it stands: the Golden Gate Bridge.
It takes about 15 minutes to walk across the Golden Gate Bridge.