崇启公铁长江大桥主通航孔南边跨钢梁吊装全部完成

Core Points - The installation of the south span steel beams for the Chongqi Railway and Highway Yangtze River Bridge has been successfully completed, marking a significant milestone in the construction process [1] - The main navigation hole steel truss of the bridge measures 992 meters in total length, with a main span of 400 meters and consists of 6 piers [3] - The bridge is a key control project for the Shanghai-Nanjing-Hefei high-speed railway, featuring a dual-layer design for both road and rail use [8] Summary by Sections - Construction Progress - The last steel beam for the south span, weighing 933.71 tons, has been installed, and the next steps include the installation of support structures and bridge deck panels [6] - The south span pushing operation is expected to be completed by late November, with the main navigation hole piers anticipated to be connected by May next year [6] - Bridge Specifications - The bridge spans a total length of 4.09 kilometers and crosses the northern channel of the Yangtze River estuary [8] - The upper layer accommodates a six-lane highway with a speed limit of 100 km/h, while the lower layer supports a high-speed railway with speeds of 350 km/h and an intercity railway at 250 km/h [8] - It is recognized as the world's largest span double-tower, double-cable-stayed railway and highway bridge without ballast track [8]