Core Points - The Chongqing-Wanzhou High-Speed Railway's Shitou Yangtze River Bridge has entered the combined beam construction phase, marking a significant milestone for the project [1] - The bridge will set four world records upon completion, including the world's first combined rail and road double-tower and the highest double-tower at 253 meters [3] - The construction employs advanced technology, including a "digital twin + intelligent monitoring" system, ensuring high precision in installation [3] Summary by Sections - **Project Significance** - The completion of the Chongqing-Wanzhou High-Speed Railway will reduce travel time between Chongqing and Wanzhou to under one hour, greatly facilitating travel for local residents [4] - The project supports national strategies such as the Chengdu-Chongqing Economic Circle and the Yangtze River Economic Belt, promoting economic and social development along the route [4] - **Technical Details** - The Shitou Yangtze River Bridge has a main span of 608 meters, making it the largest combined rail and road mixed beam cable-stayed bridge in the world [3] - The steel combined beam segment being installed measures 9.625 meters in length, 23.6 meters in width, and 4.514 meters in height, weighing approximately 550 tons [3] - The construction utilizes 32 high-precision sensors to collect real-time data on stress and displacement, achieving installation accuracy within 3 millimeters [3]