Golden Gate Bridge The Most Famous Bridge In The World

The Golden Gate Bridge connects the Pacific Ocean to the San Francisco Bay. It is most likely the most famous bridge in the world, some people say it is the most beautiful bridge in the world, but I think there are other contenders to this title. One fact that is certain, is that it had a deep impact on the development of the region.

The bridge was instrumental to the fame of San Francisco enjoys around the world. The enormous structure that connects Sausalito to San Francisco was financed by the Works Projects Administration, an initiative of Président Theodore D. Roosevelt as a means to face the economic crisis in 1929. A competition was opened and several firms applied. Joseph B. Strauss a Chicago Engineer won the competition. The cost for construction rose to 35 million dollars, and the bridge opened in May 1937.

Until 1964, the Golden Gate Bridge was considered the longest bridge in the world. Today it is ranking number 9, but we cannot discount its impact or its beauty. The length of the bridge is 4200 ft.

A Monumental Construction

The bridge is suspended 230 ft above the water and like a gigantic hammock it is supported by two main towers as high as a 65 story building (746 ft).

Two cables support more than 1 million tons of concrete and steel. Each of these cable is 36 3/8” in diameter, made of 27572 galvanized steel wires . The length of one cable is 7,650 ft, but the total length of the steel wires that make up one cable could go around the earth 3 times.

If you have a few minutes to spare watch this video, it is very interesting “Building the Bridge: Tales from Original Golden Gate Bridge Workers.”

The conception of the Golden Gate Bridge is based on three elements, the cables, the supporting towers and the anchors. Simple but incredibly complex.

The towers were built with some flexibility, to allow for the possible violent seismic activity.

The bridge has 6 lanes of traffic, and two lanes on the sides for pedestrians and bicycles. Many people jog or walk on the bridge to admire the amazing landscape on the bay. These two lanes are closed at night.

I could give you many more statistics on concrete and other technical information about the bridge but these are available on the Official Site of the Golden Gate Bridge so I would much rather write about what makes the Golden Gate Bridge such an amazing bridge besides its structural prowess.

It is a sight not to be missed.

The first you will notice is that it is not golden but “international red” a vermillion red. It was selected for its ability to blend in the natural setting surrounding it, but it is also useful when the fog wraps itself on the bridge. The paint was lead based in the past but was replaced twice since the bridge was built, with newer lead free compositions. It does require constant touch up and long term maintenance on a regular schedule. 40 men are employed to maintain the paint on the bridge and use 4000 gallons of paint every year.

This majestic bridge is the most photographed bridge in the world and has been in more movies than any other bridge.

It is a fabulous monument that fuse esthetics of Art Deco and functionality, and can truly be called one of the wonders of the modern world.

Upon its completion Chief Engineer Joseph B. Strauss wrote a poem entitled “The Mighty Task is Done.

List of movies featuring the Golden Gate Bridge

List of movies featuring the Golden Gate Bridge

  • Going the Distance (2010)
  • Star Trek (2009)
  • Mega Shark vs. Giant Octopus (2009)
  • Monsters vs. Aliens (2009)
  • X-Men: The Last Stand (2006)
  • The Core (2003)
  • Boys and Girls (2000)
  • Homeward Bound II – Lost in San Francisco (1996)
  • Murder in the First (1995)
  • Interview with a Vampire (1994)
  • Final Analysis (1992)
  • Star Trek VI: The Undiscovered Country (1991)
  • Star Trek IV: The Voyage Home (1986)
  • A View to a Kill (1985)
  • Superman (1978)
  • High Anxiety (1977)
  • Herbie Rides Again (1974)
  • It Came From Beneath the Sea (1955)
  • Dark Passage (1947)
  • Escape in the Fog (1945)
  • The Maltese Falcon (1941)

Golden Gate Bridge 75th Anniversary

On May 27, 2012 the Golden Gate Bridge will celebrate 75 years in service. This is a major milestone and details will be added as I get them:

The Marin County Fair, June 30 to July 4, 2011, is the official kick-off for the Golden Gate Bridge 75th anniversary celebrations! Join us there! Learn more about this summer’s fun at the Marin County Fair here: http://www.marinfair.org.

Most Beautiful Bridge In The World

William Wordsworth wrote “Earth has not anything to show more fair…” He was speaking of the Westminster bridge in London. I must say though that there is serious competition for the title of most beautiful bridge in the world: the Golden Gate Bridge comes to mind, the Bridge of Sighs, and the covered bridges without nails of China like the Wind and Rain Bridge.

But we if we have to choose only one bridge to be the most beautiful bridge in the world I might select the Khaju Bridge.


Built in the 17th century (between 1650 and 1667) during the reign of the Safavid Dynasty, it served to connect the two banks, and as a weir on the Zayandeh Rud à Isfahan in Iran. It has two sparkling stories, with arcades covered by tiles. It also comprises two large pavillions and a teahouse built for the chah Abbas II. Today the teahouse is closed but may reopen some day.

The Khaju Bridge is the second largest bridge in Isfahan, with 23 arches and measures 105 meters, and a splendid example of Persian architecture at the height of Safavid cultural influence in Iran.

Today this bridge is the matter of controversy as the renovations currently underway make use of cement instead of the original lime that was used.

This is the bridge I chose as the most beautiful bridge in the world, but you might have other ideas. Please share your opinion, what do you think of this bridge? What bridge do you consider the most beautiful in the world?

Isfahan can also be spelled Ispahan

Photo credits Wikimedia commons

Tower Bridge

Most everyone knows this so often photographed symbol of London the Tower Bridge. The name comes from the fact that it is located close to the London Tower.

In the second half of the 19th century, commerce had so increased to the center of London that a means of exchange between the two sides of the Thames became a necessity. A fixed bridge was out of question because of the ships on the river had to deliver goods. In 1870 a tunnel under the river was constructed for pedestrian crossing. It is only in 1886 that a project of a mobile bridge designed by Horace Jones was able to provide a solution. The building of the bridge began, and for a period of 8 years, 432 workmen used 70 000 tons of stone, and 11 000 tons of steel to construct a 244 m bridge comprised of 2 halves that can be lifted to an 83 degree incline.

In a Gothic Victorian style the London Tower Bridge was a feat of architectural and technical achievement. It illustrate perfectly the style imposed by Queen Victoria a mix of architecture and engineering, of history and technology.

Today most of the original working mechanisms have been replaced by an hydraulic system. But, this exploit of Victorian ingenuity worked until 1976. Today they only elicit a historic interest. To see the bridge raising up one has to visit the Tower Bridge Experience.

To satisfy the demands of tourists, the pedestrian passage above the bridge was reopened in 1982 after it was rehabilitated into an exhibit. It had been closed since 1910 due to a lack of interest.

If you visit London you will surely take the walk on the bridge and see the mechanisms that used to open it. Of course the best part is walking along the pedestrian passage above it. It offers a spectacular view on London, specially as the night lights come on the city.

Information to visit the Tower Bridge in London

Adress : The Tower Bridge Exhibition, London SE1

Tél : 020 7403 3761

Tower Bridge Opening Times:

Apr. 1 ~ Sep. 30 : 10h-18h30

Oct. 1 ~ Mar. 31 : 9h30-18h

Closed from Dec. 24 to Dec. 26

Please Note : Last admission to the Tower Bridge is one hour prior to closing time.

Admission is Free

The Tower Bridge is an important feature in the movie Sherlock Holmes, where you can admire in one of the scene the construction of the famous bridge.

Tower Bridge images

 

Photo Credits Wikimedia commons

Photo 1 Myrabella _ Wikimedia Commons _ CC-BY-SA-3.0 & GFDL

Photo 2 Misterzee

Photo 4 Yorick Petey

Other images are in the public domain

Amazing Bridges of China

It is remarkable how many amazing bridges in the world can be found in China.

Donghai Bridge

The Donghai Bridge is a sea bridge that goes from the city of Shanghai to to the Yangshan islands. This bridge is an amazing 32.5 km (20.2 miles) with 26 km (16 miles) over the sea. It was until 2005 the longest sea bridge until it was dethroned by the Hangzhou Bay Bridge also in China. This amazing bridge of China was under construction from 2002 to 2005. As a whole this bridge is not very high but it has two cable-stayed sections that allow ships to pass. The highest part of the bridge is 420 m (1378 ft).

Lupu Bridge

Lupu Bridge is the longest arch bridge in the world, with a length of 3.9km (or 2.4 miles). This highway bridge is over the Huangpu river in Shanghai. It offers an excellent view of the 2010 Exposition complex.

Dongjin Bridge

The Dongjin Bridge that is located in the Jiangxi province is a pontoon bridge over the Zhang and Gong rivers which was built during the Song Dynasty ( 960 – 1279 ). It is the last pontoon bridge in China and is 400m (1312 ft). If you are wondering what is a pontoon bridge, it is a bridge that float on the water supported by a barge or boat-like pontoons.What is amazing about the Dongjin pontoon bridge is that this type of bridges are normally temporary structures. This one has been around hundreds of years. On the image you can clearly see the boats supporting the bridge. There are about 100 wooden boats, linked to each other with chains, to support it.

Hangzhou Bridge

In the south of China you will find the transoceanic bridge of the Hangzhou Bay which spans between Shangai and Ningbo. It opened in 2008. If you want to use the exact name of the bridge than be ready for a mouthful: The Great Transoceanic Hangzhou Bay Bridge; or in pinyin “Hángzhōu wān kuàhǎi dàqiáo”.

It is a vehicular cable-stayed bridge that hold the title for longest transoceanic bridge in the world. While it was inaugurated in 2007, it was not until one year later that traffic was allowed on it. On the 36 km of the bridge speed limit is 100km/hr or 60 miles per hour.

In the middle of the bridge there is a rest area for people who might feel the effect of gephyrophobia. The rest area is an artificial floating island of about 10 000 m2 with a restaurant, an hotel and other amenities.

Jade Belt Bridge (Yu Dai Qiao)

One of the amazing bridges of China is the Jade Belt Bridge. A name it takes from its distinctive silhouette caused by a particularly high and narrow arch. The body and railings of the bridge are made of carved marble and white stone. Under the bridge flow the waters of the Jade Fountain towards Kunming Lake. In the 18th century the Emperor Qianlong and his wife would float under the bridge to go to the Jade Fountain Hills, the summer palace. It was to accommodate their dragon boat that the arch was made so high.

Lugu Bridge

Lugu Bridge is also known as the Marco Polo Bridge. In the 13th century during his travels to China the famous traveler wrote:

“ On the river there is a beautiful stone bridge, so beautiful in reality, that there is almost no equal in the world” (loosely translated from Marco Polo’s journal).

The baluster of the bridge started in 1189 and it was finished in 1192. 281 pillars support 281 stone lions. The most fascinating about theses beasts is that they hide smaller lions on their heads, backs, bellies, or paws. Studies have been done to determine the total number of lions but results varied from 482 to 496. However documents seem to indicate that there were initially 627 lions. Most of the lions date from the Ming Dynasty and each is different in posture even in age. Not all lions are from the same period, some date from the Yuan Dynasty, a few rare ones are even from second Jin Dynasty.

The bridge, which is 15 km out of Beijing, is not only beautiful it is an architectural wonder. It is built in solid granite, with one large central arch, with 5 smaller arches on each side, each supported by triangular metal pillars to prevent damage from floods and freezing.

The Marco Polo Bridge also features in the history of modern China. It was on this bridge that an incident occurred July 7, 1937, that started the second Sino-Chinese war that lasted 8 years.

The Wind and Rain Bridge is another wonder of architecture and beauty. I have featured this bridge in a post “Amazing Bridges Of The World”.

Finally we must recognize that China holds the title for the longest cable-stayed bridge in the world open to the public in 2008, the Suzhou-Nantong Bridge.

London Bridge The Real Story

Today the Thames can be crossed by using a variety of bridges and you have certainly heard of the most famous of them the Tower Bridge. Another famous bridge is the London Bridge.

The London Bridge as seen today is a modern classic arch bridge with a long and interesting story. The actual bridge seen below is the work of Mott, Hay and Anderson, and was inaugurated by Queen Elizabeth II on March 17, 1973. It was built to replace the previous London Bridge which dated from 1831.

london bridge

However there had been a bridge on this spot since the Roman occupation, more than 2000 years ago. The Roman bridge of which we have no images, was replaced by a “real” bridge in 1209 after 33 years of work. It was a really impressive structure, on which stood stores in 7 story buildings. For about 600 years this medieval bridge was a thriving commercial center. Eventually it was judged that it needed to be replaced as it was too old and narrow for the times. Here is a rendering of the bridge in 1616 by Claes Van Visscher.

london bridge 1616

In 1799 Thomas Telford proposed the construction of a bridge that would be composed of a single metallic arch, however the project was never started as it was thought unfeasible. In 1831 when the a bridge was finally settled upon, it was built about 90 ft west of the Roman Bridge. The new bridge as it became known was designed by John Rennie, and became one of the most popular spot in London. In 1896 about 9000 people per hour would cross the bridge. It was then widened by 12 ft to accommodate the traffic, but the bridge was unable to sustain the additional weight, and it started to sink a couple of inches every eight years. This is where the famous children song “London Bridge Is Falling Down” found its origins. It also meant that the bridge would have to be replaced.

The bridge was not destroyed, instead the city of London had the idea to sell it. In 1967 it was offered for sale and was sold April 18, 1968 to the American entrepreneur Robert P. McCulloch for the price of 2.4 million dollars. It was moved to Lake Havasu City in Arizona.

London Bridge Lake Havasu city

Some have said that McCulloh thought he was buying the Tower Bridge, but he has denied the rumor. The old London bridge has now become a tourist attraction in Arizona, and the actual London bridge is a much less famous, much less interesting bridge, one of many similar modern bridges. The current London Bridge was designed by Mott, Hay and Anderson, constructed by John Mowlem and Co, work started in 1967 and ended in 1972. It comprises three spans of prestressed concrete box girders, and is 928 feet (283 m) long.

Gephyrophobia Or The Fear Of Bridges

A little know word gephyrophobia from the Greek “gephyra” meaning bridge and “phobia” fear, is a bridge fear.

You only need to hear the word “bridge” and you feel faint, your breathing accelerates, your heart is pounding… You are suffering from gephyrophobia or the fear of bridges or more appropriately the fear of crossing bridges. And you are not alone, although there are no statistics about gephyrophobia sufferers, it is a common condition and according to many specialist it is treatable.

What are the symptoms of gephyrophobia?

The symptoms vary and many people are affected differently but they usually are the same symptoms that are found in all anxiety type of phobias.

A panic attack is usually determined by the presence of 4 of any of the following symptoms.

• Accelerate heart beat
• Shaking
• Cold sweat
• Shortness of breath
• Chocking
• Chest pains
• Vertigo
• Tightening of the throat
• Feeling faint
• Tinglings
• Nausea
• Chills or hot flashes
• Feeling of loss of control
• Fearing to die
• Feeling of body disconnection
• Loss of reality

Some bridge management companies recognize the seriousness of this affliction and provide help to drivers who feel panicky at the idea of crossing some bridges. For example in New York the Tappan Zee Bridge, which is about 138 ft over the Hudson is known for causing gephyrophobia symptoms in many drivers. The bridge offers the services of professional drivers to relieve motorists who cannot face the crossing on their own. A similar service is offered at the Mackinac Bridge in Michigan. On the San Francisco – Oakland Bay Bridge a different solution to the bridge phobia is given, when a driver becomes disabled a tow truck is dispatched to rescue fear stricken motorists.

While I said it is treatable I am not a doctor, so I do not provide any medical advice, however like any other phobia some people have found relief with hypnosis and other therapy. The important is to know and understand that it is not rare, that there is help available and that you should discuss it with a therapist you trust.

 

 

Amazing Bridges From Around The World

Amazing bridges can be found in many places around the world. Beautiful, modern or ancient, low or soaring… these amazing bridges are not only built to get over obstacles of nature, they are works of art often built with extreme technical challenges. Here are ten of the most amazing bridges in the world with a few facts that highlight their special characteristics.

1. In 1870 John et Washington Roebling wanted to construct the most beautiful bridge in the world. It was meant to connect Lower Manhattan and Brooklyn over the East river in New York. The bridge opened in 1883 after 13 years of construction, 15.5 millions and it cost the lives of 27 people. Gothic towers stand on submerged caissons where the work had to be done. While working in one of the caissons Washington Roebling was victim of a decompression accident that rendered him paralyzed. Today one of the oldest suspension bridge in the US, the amazing Brooklyn Bridge is one of the symbols of the city of New York, displaying its majestic towers, its cables and braces.

Visiting the Brooklyn Bridge is free to the public and it is open 24/7. It is accessible from the Brooklyn entrances of Tillary/Adams Streets, Sands/Pearl Streets, and Exit 28B of the eastbound Brooklyn-Queens Expressway. Pedestrians who walk the span of the bridge are greeted with one of the most magnificent view on Manhattan Island to the NW and Brooklyn to the SE.

Brooklyn Bridge

 

2. The Rion-Antirion amazing bridge in Greece Corinth Gulf is the second longest cable-stayed bridge in the world with a length of 2352 meters (1.46 mile). It was first the idea of Prime Minister Harilaos Trikoupis, in 1880, to go across the Gulf of Corinth. While the project did not see any progress until 1991, the Prime Minister’s name is the official name of the bridge . From 1991 to 1998 when the first stone was set, only legal, financial and administrative progress was accomplished. The final agreement was that the company Gefyra would conceive, construct, finance and administer all aspects of the bridge until 2039 when the Rion-Antirion Bridge will be returned to the Greek Government who will then administer the bridge and finally collect all revenues. The bridge was officially open in 2004, a week before the Olympic games. What makes the Rion-Antirion amazing besides the length of time it took for its construction from the first idea, is found in the statistics:

According to Nikos Mantzoufas Special Secretary for Public-Private Partnerships, cost of the bridge rose to € 750 000 000. But more importantly is its extraordinary engineering.

It comprises a 600 m viaduct, 4 vertical structures and 4 lanes of highway. Construction included 250 000 m3 (8,828,666 ft3) of concrete, the metal framework weights 172 000 metric tons, and the 4 concrete towers are 227 m (744 ft) high, and carry a total of 368 stayed cables. The Rion-Antirion bridge was the recipient of “The Outstanding Civil Engineering Achievement (OCEA)” award by the American Society of Civil Engineers (ASCE).

Rion-Antirion bridge

3. Bixby Creek Arch Bridge is one of 5 bridges on Highway 1 and it is a beautiful architectural success. Built in 1931-1932 the single arch Bixby Bridge, as it is known, is a structural work that may not be very sound, but that is perfectly integrated into the environment. It is mostly a symbol of the American discovery of the coast as it is the bridge that opened the roadway. Regardless of how it is seen, it is splendid concrete work of art. It spans over a deep canyon where the king of Beatniks and progenitor of the Hippies, Jack Kerouac, looking for peace (for a soul and body racked by drugs and booze,) found a temporary haven where he wrote “Big Sur”.

Bixby Creek Bridge

4. If you happen to be in Brasilia the capital of Brazil you cannot see the Juscelino Kubitschek Bridge, a conception of architect Alexandre Chan and structural engineer Mário Vila Verde. Like many of the futuristic buildings in Brasilia this bridge is a testimony of the twentieth century. It spans across a man made lake, Lake Paranoá. It was built to relieve the traffic conditions in a city that was designed for 500 000 people but in less than 50 years grew to more than 2 million people. With its asymmetric arches that seem to interweave in the air, this metallic structure has become one of the symbols of the City that was awarded the status of Historical and Cultural Heritage of Humanity by UNESCO, in 1987. This amazing bridge opened in 2002 and Alexander Chan received several awards for a beautiful architecture displaying harmony with the environment and esthetic. When I look at this bridge I can only think about skipping stones across the water. There is a path on the bridge for pedestrians and bicycles.

5. The most famous bridge in the world is probably the Golden Gate Bridge, it is certainly the most photographed, and it appeared in more movies than any other bridge. It is indeed a beautiful bridge, one that had a profound impact on the development of the region. San Francisco owes its celebrity status to this amazing bridge. Today it is not the longest, the highest, nor would it be the most technically challenging to build, but in 1937 when it was finished after 4 years of work, it was an accomplishment. It is like a gigantic hammock suspended between two huge pylons the size of 65 stories building. It is considered one of the 7 wonders of the modern world.

Golden Gate Bridge

6. Open in 1991 the Nanpu Bridge in Shanghai is the first steel and concrete girder cable stayed bridge built in China. It is the longest in China and the 4th longest of it kind in the world. The total length is 5.185 miles (8346 m). The center pylons reach a height 492 feet (150 m). It takes its name, like many other bridges in China from an abbreviation of the two districts it connects. Nanshi on the north, and Pudong on the south. What makes this bridge originality is the spiral highway in puxi. This circular approach to the bridge was designed to minimize the use of land, and is considered one of the wonder in bridge design. It is open to the public by elevator from 8 :30 am -16:30 pm, and admission is free.

7. Around 2000 years ago the Romans needed water for the city of Nîmes that was growing rapidly. They thought that the solution was to get water from the nearby area of Uzès, a town that had an abundant source of water. To move the water from Uzès to Nîmes they conceived a 50 km aqueduct. Although Uzès and Nîmes are only 20 km from one another it was not possible to build in a straight line. This was a gigantic work that followed the natural lay of the land and had to overcome many obstacles including crossing the river Gard. The Gard s a river that seems quiet, but can awaken with incredible tantrums and take everything along its way. Construction of the aqueduct lasted 10 years, and the bridge itself took about 5 years. You can visit the bridge and the museum that uses modern technology to recreate (in a smaller scale) the actual building of the bridge. Multimedia presentations give visitors ways to learn and have fun as they visit at their own pace and immerse themselves in the life of Nîmes at the time of the Roman Empire. A very worth while visit for adult and children. It is open year round from 9:30 am closing times vary according to the seasons.

A special note about this amazing Roman bridge : it seems that all this work was not to be worth it at the time of the Empire as the aqueduct was used only about 150 years. Reason for its demise was the high costs of maintenance. What was not to be of lasting value to the Romans has been an enduring value to humanity for centuries even millenniums.

8. The Oresund bridge is one of the most extraordinary bridge. It is a bridge with an extension on an island, then a tunnel that links Malmö and Copenhagen, it is the connection between Denmark and Sweden, the European continent and the Scandinavian peninsula. The economic implications of this bridge could not be greater. It created exchanges that were practically non-existant before. It goes without saying that the area had an interest to distinguish itself and the result is just beautiful. This architectural and technological jewel bridge/tunnel is the longest in the world with 16 km (10 miles) and it stands 60 m (196 ft) above the water.

In Sweden it is spelled Öresundsbron and in Denmark they spell it Øresundsbroen, but the company that manages the bridge insist on spelling it Øresundsbron, a compromise between the two languages, as a symbol of cultural unity of the area.

Oresund bridge

9. Every village of the minority Dong in China is situated along rivers. They are connected to the external world by an impressive covered wood bridge called the bridge of wind and rain. The most famous of these amazing bridges is the Chengyang Bridge. It is 76 m (249 ft) long, 3.4 m wide, and 10.4 m (35 ft) high. It is a fairly recent bridge built in 1916 that took 12 years for villagers to build. This very elegant bridge is considered the most beautiful of all 108 such bridges in the area. What makes this truly amazing architectural masterpiece is the fact that not one nail was used to hold all the wood together. Not one single piece of metal was included in the entire construction. This bridge without nails is also called Yongji bridge, or the Panlong bridge.

Chengyang bridge

10. Hussaini Bridge (Pakistan) Needless to say that I will not give you statistics about this bridge, other than it is one of the most frightening bridge in the world. There is no stability and if this was not scary enough it is used to cross over the river Hunza, famous for very strong currents. Would you be adventurous enough to cross it? What if you saw the most magnificent view from the bridge would it make a difference. Please tell me what you think. Have you taken it? Use the You can post page to tell us and show your pictures.

hussaini bridge

I don’t suffer from gephyrophobia, but after crossing this bridge, I think a lot of people might be afflicted for ever, assuming they survive the crossing. Amazing.

I hope you enjoyed these amazing bridges around the world. Please let me know what you think.

Photo Credits: Yiannis Logiotatides on Flickr – Wikkimedia commons – Webshots