CCTV News: The Huajiang Canyon Bridge, located at the junction of Zhenfeng County and Guanling County, Guizhou Province, is a key control project of the Liuzhi to Anlong Expressway in Guizhou. The bridge is named after it spans the Huajiang Grand Canyon, known as the "earth crack". The bridge is 2,890 meters long, the main bridge span is 1,420 meters, and the height from the bridge deck to the water surface is 625 meters. After completion, it will become the largest and highest mountain bridge in the world with a span. On the afternoon of January 17, the bridge completed the hoisting operation of the last steel truss and officially completed the dragon. The best in the two worlds: the highest height and the longest span

After this bridge is completed, there are two worlds with the best. First of all, the height is the highest in the world. The distance between the bridge deck and the water surface is 625 meters, which is 60 meters higher than the current world's tallest bridge, Beipanjiang Bridge. At the same time, it is also the longest span in the mountainous area. The span of the 1,420-meter main bridge grows 34 meters longer than the Jinshajiang Bridge in Jin'an, Yunnan, which currently has the longest span in the world. It can be said that "the world's first in both horizontal and vertical lines." The lifting was completed in 74 days. The bridge officially merged today.

These blue-green parts under the bridge are the steel trusses of the bridge, with a total of 93 pieces. Starting from November 4, 2024, steel trusses will be hoisted from the middle of the bridge to the two main towers in turn. On January 17, 2025, the lifting operation of the last steel truss was completed on this side of Zhenfeng County.

The bridge is expected to be opened to traffic in the second half of 2025. I used to arrive at Anlong from Liuzhi, because I had to take a detour up and down the winding mountain road, it took about two hours to drive. After it is opened to traffic, you can drive directly from the bridge and you can cross the Huajiang Grand Canyon in just one or two minutes. As a key control project of the Liuzhi to Anlong Expressway, the completion of the Huajiang Canyon Bridge will further improve the transportation network in Guizhou Province. The cable crane system has a complex structure and a large span

You may not feel how big it is when you look at this steel truss from a distance. Its length, width and height are 15 meters, 30 meters and 8 meters respectively, and its weight is about 215 tons. What kind of cable lifting system is used to hoist such a giant of 93?

It is understood that the cable crane system adopts a double tower and three span arrangement. The span of the main bridge is 1420 meters. Including the lengths of the side spans on both sides, the cable crane span used in the entire bridge exceeds 2000 meters. The main rope of the cable crane system is composed of 28 load-bearing ropes. The pulley system riding on the load-bearing rope is called a "sports car". Each steel truss is connected to the steel trusses by 4 hanging points. Big data is the base "Digital Bridge" ensures construction accuracy

In order to ensure the accuracy and controllability of the construction process, a smart control center is specially set up below the main tower of the bridge. The data detected by more than 30 sets of high-definition cameras and various sensors on the full bridge will be displayed in real time on the large screen of the control center and will be automatically and intelligently monitored. Once a failure occurs, it can be handled as soon as possible.

In addition, the bridge's smart cable crane system relies on Beidou satellite and Internet of Things technology to allow steel trusses to be accurately positioned and lifted in one-click. While improving construction efficiency while promoting safe production, it can be said that "digital bridges" are profoundly changing the construction and management methods of bridge projects. The service area is constructed simultaneously to create a new model for bridge and tourism integration

Next, the Huajiang Canyon Bridge will take the Yundu service area next to it as the central scenic spot, breaking the closure of the expressway service area and creating a series of bridge and tourism integration projects. By setting up experience facilities such as sightseeing elevators and sightseeing corridors, development space is reserved for the development of bridge sightseeing and extreme sports events.

It is understood that on January 7, the main structure of the comprehensive building in Yundu Service Area has been fully capped. After the official opening and service area is completed, transportation advantages and tourism resources will be effectively integrated, "attractive on the bridge and productivity under the bridge", and jointly create a new model for the integrated development of world-class bridges and tourism.