What are the reasons and significance of many bridges in Guizhou?

Guizhou borders Sichuan and Chongqing in the north, Hunan in the east, Guangxi in the south and Yunnan in the west. And this area happens to be a place with thousands of valleys and endless mountains. There are Dalou Mountain, Wuling Mountain, Miaoling Mountain and Wumeng Mountain. At the same time, Guizhou spans the Yangtze River and the Pearl River, and there are Chishui River, Nanpanjiang River, Beipanjiang River, Duliujiang River, Qingshuijiang River and Wujiang River among the mountains.

Guizhou is also a transportation hub province in the southwest of China, and an important transit area leading to the coast in the northwest and southwest provinces. Guizhou is also the first province in the western region where counties are connected with expressways. So there are many bridges in Guizhou.

The significance of multi-bridge in Guizhou;

More bridges, more bridges that can rank in the world, can effectively improve national pride and it is profitable to do more things. In addition, compared with tunnels, bridges are naturally more economical in cost, more mature in construction technology, shorter in construction period, lower in maintenance cost and safer in operation.

There are not many feasible methods to reduce the tunnel length as much as possible. Because of the high alignment index of high-grade highway, the plane can not choose short tunnel under the condition of large-scale translation. The simplest thing is to raise the longitudinal section. The higher the longitudinal section, the shorter the tunnel, the higher the corresponding longitudinal section and the longer the bridge length.

Extended data:

The number of bridges in Guizhou has reached more than 20,000, covering almost all bridge types in the world today. Of the 0/000 bridges in the world/KLOC-,more than 80 are from China. More than half of these 80 bridges come from Guizhou.

For example, Beipanjiang Bridge, Yachi River Bridge, qingshui river bridge, Liu Guang River Bridge, Baling River Bridge, Pingtang Bridge and so on. Among them, Beipanjiang Bridge, which connects Xuanwei, Yunnan and Shuicheng, Guizhou, has a distance of 565.4 meters from the bridge deck to the river surface, making it the first Gao Qiao in the world.

"World Road and Bridge sees China, China Road and Bridge sees Guizhou". The bridge has become a beautiful scenery in Guizhou.