南京都市圈“超级桥梁群”崛起，“世界级桥梁”架起一体化发展“高速路”

Core Insights - The newly opened and under-construction bridges in the Nanjing metropolitan area are significant engineering feats, enhancing regional integration and development [1][2][3] Group 1: Major Infrastructure Developments - The Nanjing Xinshengxu Yangtze River Bridge is the largest single-span suspension bridge in China and the third largest in the world, officially opened on November 26 [1] - The Hu-Yu-Rong (North Yangtze) High-Speed Railway Tongtai Yang Bridge, currently the longest bridge under construction globally at 172.9 kilometers, has completed 90% of its upper structure as of the end of November [1] - The Ma'anshan Yangtze River Road-Rail Bridge, the world's first double-main-span cable-stayed bridge exceeding 1,000 meters, achieved track connectivity on December 3 [1] Group 2: Regional Economic Impact - The Ma'anshan Yangtze River Road-Rail Bridge enhances the efficiency of transportation between the central and western regions and the core Yangtze River Delta, acting as a "strategic engine" for regional collaboration [2] - The Nanjing Xinshengxu Yangtze River Bridge reduces travel time between Nanjing and cities like Yangzhou and Zhenjiang, showcasing its significant role in regional connectivity [2] Group 3: Technological Innovations - The construction of the Ma'anshan Yangtze River Road-Rail Bridge involved advanced welding technologies and integrated solutions, resulting in significant improvements in process, efficiency, and quality [2] - The Hu-Yu-Rong High-Speed Railway Tongtai Yang Bridge employs smart temperature control systems and BIM modeling for precise construction, achieving millimeter-level accuracy in its assembly [3] Group 4: Future Development Plans - The National Development and Reform Commission's plan aims to establish approximately 180 river-crossing channels by 2025 and 240 by 2035 along the Yangtze River, with over 200 bridges currently built or under construction [4] - The ongoing development of "super bridges" in the Nanjing metropolitan area is expected to facilitate the free flow of development factors and enhance commuting efficiency, driving stronger regional integration [4]