Pontchartrain Lake Causeway, also known as Pontchartrain Lake Bridge, is located in Louisiana, USA. Completed at 1969, connecting mandeville and Metairie, with a total length of 38.4 kilometers, it is the longest bridge in the world.
Pontchartrain Lake Bridge consists of two parallel bridges, of which 1 Bridge was completed and opened to traffic on 1956, and Bridge 2 was completed and opened to traffic on 1969. Bridge No.2 is about 1 6 meters long, which is 38,422 meters. Pontchartrain Lake Bridge spans Pontchartrain Lake. Eight miles, you will only see water, not land. The bridge runs through the middle of the lake.
Since the birth of mankind, land has given us a sense of security and belonging. But news such as sea level rise and dam break will make us nervous. This is also the longest bridge in the world? The horror of Pontchartrain Lake Causeway.
What is the tallest bridge in the world? It used to be the Sidu River Bridge in China, with a height of 560 meters, but from today, the tallest bridge in the world will be changed. September, 2065438 12, Beipanjiang Bridge, located at the junction of Xuanwei, Yunnan and Shuicheng, Guizhou, and crossing Hangrui Expressway in Yunnan and Guizhou provinces, was officially completed. It is called the tallest bridge in the world, with a height of 565 meters, which is 5 meters higher than the previous Siduhe Bridge. The total length of Beipanjiang Bridge is1341.4m, and the deck is perpendicular to the bottom.
The first Gao Qiao in the world: Beipanjiang Bridge
One bridge crosses Yunnan and Guizhou, and the natural moat becomes a thoroughfare. The world's first Beipanjiang Bridge on Gao Qiao Hangrui Expressway (originally reported as Nizhuhe Bridge, now named Beipanjiang Bridge), with a vertical height of 565 meters, equivalent to the height of 200 floors, has been officially closed. Beipanjiang Bridge is expected to open to traffic by the end of this year. After opening to traffic, the journey from Xuanwei, Yunnan to Liupanshui, Guizhou will be shortened from about 5 hours before to more than 1 hour.
Beipanjiang Bridge, located at the junction of Xuanwei, Yunnan and Shuicheng, Guizhou, spans Yunnan and Guizhou provinces, with a total length of 134 1.4m and a vertical height of 565m from the deck to the bottom of the valley, making it the first Gao Qiao in the world. At the same time, the main piers on the east and west banks of the bridge are 269 meters and 247 meters respectively, and the main span of 720 meters is second only to the Yachi River Bridge on Guizhou-Qianxi Expressway, which started construction in the later period, ranking second in the world among similar bridges.
Shocking! Gao Qiao Helong, the first in the world, is equivalent to 200 stories high.
Beipanjiang River is a main tributary of Hongshui River, which flows through Yunnan and Guizhou provinces, with a total length of 449 kilometers, with a total drop of 1.985 meters and an average decrease of 4.42 meters within the length of 1.000 meters. Since the construction of Beipanjiang Bridge started, it has overcome many difficulties such as high mountains and valleys, complicated geology and bad climate along the line, and ensured that the construction of Beipanjiang Bridge with high technology content and great difficulty smoothly entered the final stage. During the construction of Beipanjiang Bridge, engineers and technicians used the longitudinal cantilever assembly technology to hoist steel truss segments for the first time in the construction of long-span steel truss cable-stayed bridges in mountainous areas. This technology is to splice steel truss girder segments with a length of12m and a weight of about160t on the ground as a whole, and hoist them with cranes and other equipment. As far as the construction period is concerned, compared with the traditional technology, one segment can save one or two days of construction period. In addition, because the steel truss beams are hoisted after the ground splicing is completed, compared with the traditional aerial splicing process, the construction accuracy is higher and the safety factor is higher.
Gao Qiao was the first in the world: Siduhe Bridge was 560 meters high.
Siduhe Bridge is located at the junction of Yichang City and Enshi City, Hubei Province. Located in Sidu River, Yesanguan Town, Badong County, Hubei Province. It is the control bridge project of Shanghai-Chongqing Expressway, located in Wuling Mountain area of western Hubei, and it is the longest suspension bridge in the world built in China at present. The total length of the bridge is1365m, which consists of a bridge of1105m and a subgrade of 228.9m.. Yichang bank is the tunnel anchor and Enshi bank is the gravity anchor. The main span of the bridge is 900 meters and the bridge deck is 24.5 meters wide. The Enshi bank tower of the bridge is118.2m high, and the Yichang bank tower is113.6m high. The height difference between the top of the tower and the bottom of the valley is 650 meters, and the bridge deck is 560 meters, which is equivalent to 200 stories high. It is the longest suspension bridge built in a deep mountain valley in China and the first suspension bridge with a span of over 900 meters in the world. It is 307 meters and 290 meters higher than French Mi Yue Bridge and royal gorge bridge, Colorado, USA. It was once called the highest suspension bridge in the world. September 20 16 10, Yunnan-Guizhou North Panjiang Bridge closed, known as the best Gao Qiao in the world.
China's famous World Bridge.
There is a saying in the world bridge industry that the world bridge construction depends on Europe and America before 1970s, Japan in 1990s and China in 20th century. At present,? Chinese bridge? , has become a beautiful business card of China and an important symbol of comprehensive national strength. Let's have a look!
Hangzhou bay bridge
Hangzhou Bay Bridge is an economic hub connecting the Yangtze River Delta. The bridge started construction on June 4th, 2003 165438+ and was completed and opened to traffic on May 6th, 2008. The total length of the bridge is 36 kilometers, which is 1 1 km longer than the King Fahd Bridge connecting Bahrain and Saudi Arabia. It once held the world record for the longest sea-crossing bridge in China, world record association.
wuhan yingwuzhou yangtze river bridge
Yingwuzhou Yangtze River Bridge is located 2.3 kilometers upstream of Wuhan Yangtze River Bridge. It is the eighth Yangtze River Bridge in Wuhan, with eight lanes on the main deck. This is the world's first three-tower four-span suspension bridge with continuous main cables, and it is also the world's largest three-tower four-span suspension bridge. 20 14 12.28 was officially completed and opened to traffic.
Pingtan Strait Highway-Railway Bridge
Pingtan Strait Highway-Rail Bridge, the first real cross-sea bridge in China, is stepping up its construction. This bridge is also because? The construction is the most difficult? It is famous in the bridge industry. The bridge is located in one of the three windy areas in the world. The number of windy days above level 6 exceeds 300, and the environment is extremely bad. Total length of the bridge 16 km. At present, the bridge has applied for patents 12 in terms of new structure, new technology and new methods, which is called an innovative bridge.
Chongqing Wanzhou Yangtze River Bridge
Wanzhou Yangtze River Bridge, formerly known as Wanxian Yangtze River Bridge, is a highway bridge. This is a super-large highway bridge connecting 3 18 national highway, the first single-hole highway bridge on the Yangtze River, and the largest arch bridge of its kind in the world at that time. The whole bridge is 814m long, 23m wide, 420m clear distance and140m height from the river. The main bridge was completed and opened to traffic in May 1997, and it was the largest reinforced concrete arch bridge in the world at that time.
qingdao bay bridge
Qingdao Bay Bridge, also known as Jiaozhou Bay Cross-sea Bridge, is a super-large cross-sea bridge designed, built and constructed by China. The total length of the bridge is 36.48 kilometers, and the investment is nearly 654.38+0 billion, which took four years to complete. It is the longest sea-crossing bridge in the world today, surpassing the Hangzhou Bay Bridge in China and the Chesapeake Bay Bridge in the United States. The bridge was opened to traffic on June 30th, 20 1 1.