The Xiamen-Jinjiang Bridge (Xiamen Section) Marine Main Line Bridge is completed and is expected to be completed and open to traffic by the end of this year

In the early morning of today (November 10), as the last steel box girder was hoisted in place, the Xiamen-Jinjin Bridge (Xiamen Section) Marine Main Line Bridge was successfully closed, marking the completion of the main structure construction of the Xiamen-Jinjin Bridge (Xiamen Section) Marine Main Line Bridge, and the project entered the final stage before opening to traffic.

The last steel box girder weighs 3,318 tons. It is large in size and has high hoisting accuracy. The base temperature must be controlled at about 22°C. The construction workers used a 5,500-ton floating crane to lift the steel box girder and slowly send it to Helongkou. Then, it was fine-tuned through jack synchronous control.

In order to ensure the safety of this "Big Mac" during transportation and hoisting and the smooth passage of passing ships, the maritime department provided on-site escort. The three-dimensional security model of "remote control + on-site monitoring" is adopted to minimize the impact on normal navigation in the jurisdiction while maintaining the bottom line of hoisting safety.

The non-navigable bridge on the east side of the Liuwudian Channel is the last bridge section of the Xiamen-Jinjiang Bridge (Xiamen Section) maritime mainline bridge. The main sea bridge with a total length of about 14.2 kilometers consists of 12 bridge sections including the Guanyinshan Interchange Main Line Bridge, Liuwudian Channel Bridge, and Jintong Channel Bridge. With the closure of the main sea bridge, the construction of various supporting projects such as bridge deck, mechanical and electrical, traffic safety and so on is also intensified.

The total length of the Xiamen-Jinjiang Bridge (Xiamen Section) is about 19.6 kilometers, including a main sea bridge, a branch bridge and a land tunnel. The total length of the main line is 17.34 kilometers, and the cross-sea section has eight lanes in two directions, with a design speed of 100 kilometers per hour. It is expected that after the main sea bridge is completed and opened to traffic at the end of this year, the travel time from Xiamen main island to Dadeng Island will be further shortened, and the traffic efficiency from the main island to Xiang'an International Airport will be greatly improved.

(CCTV reporters Li Weidai and Han Zhitao)