通苏嘉甬高铁苏南特大桥跨白蚬江连续梁拱组合桥主跨合龙

Group 1 - The Su Nan Grand Bridge, a key project of the Tong Su Jia Yong High-Speed Railway, has successfully completed the main span of the Bai Xian Jiang continuous beam-arch combination bridge, marking a significant milestone in the construction of the railway [1] - The bridge spans 25 kilometers and crosses various structures, including roads, rivers, and residential areas, making it a highly technical and challenging project [1][2] - The bridge features a prestressed concrete continuous beam-arch structure with a main span of 180 meters and a design height of 36 meters, utilizing advanced construction techniques [1][2] Group 2 - The project has completed 6,168 pile foundations, 678 pier bodies, and 683 bearing platforms, with 14 out of 22 continuous beams already completed [2] - The total output value of the project has reached 1.65 billion yuan, accounting for approximately 80% of the total investment [2] - The project is expected to complete the construction of the bridge's lower structure and special structures by 2026 [3]