崇启公铁长江大桥主通航孔边跨钢梁吊装顶推已近尾声

Core Points - The successful installation of the E25 segment steel beam marks a significant milestone in the construction of the Chongqi Railway and Highway Yangtze River Bridge, which is a key project for the Shanghai-Nanjing-Hefei high-speed railway [1][3] - The total length of the main navigation hole steel truss beam is 992 meters, with the Shanghai side comprising 512.4 meters and weighing 18,743 tons [3] - The bridge features a dual-layer design for both rail and road use, with the upper layer accommodating a six-lane highway and the lower layer supporting high-speed rail and intercity rail [5] Summary by Sections - Construction Progress - The E25 segment steel beam, weighing 523.9 tons and measuring 12.5 meters, has been successfully installed, contributing to a total weight of over 20,000 tons for the main navigation hole beams [1] - A total of 13 segments have been installed, with plans to complete the edge span installation in November [3] - Bridge Specifications - The Chongqi Railway and Highway Yangtze River Bridge spans 4.09 kilometers and crosses the northern channel of the Yangtze River estuary [5] - It is recognized as the world's largest span dual-tower, dual-cable-stayed bridge with ballastless track for both rail and road [5] - Future Developments - The main bridge's mid-span closure is expected to be achieved in the first quarter of next year [3]