SHANGHAI, June 2026 — The project serves as a pivotal link in the Shanghai-Chongqing-Chengdu high-speed railway corridor, representing a significant leap in multi-modal infrastructure integration. It is currently the world's largest rail-highway cable-stayed bridge under construction and the first of its kind in China designed to support 350 km/h high-speed rail.
The 4.09-kilometer double-deck structure features a 400-meter main span. Its design optimizes space by placing a six-lane highway on the upper level and a dual-track system on the lower deck, accommodating both 350 km/h high-speed lines and 250 km/h intercity lines.
From a technical perspective, the project utilized intelligent grouting technology to secure 152 bored piles, each 2.5 meters in diameter. The installation of the main span employed a single-cantilever method using two 1,100-metric-ton beam-lifting cranes, integrated with digital monitoring systems to track structural stress and deformation in real-time.
Chief designer Hu Huiyue highlighted that integrating high-speed rail and highway infrastructure into a single cable-stayed structure posed unique engineering challenges, particularly regarding precision and the management of ultra-large-span installations.
Expected to be fully operational by the end of 2027, the bridge will fundamentally transform regional logistics, reducing rail travel time between Shanghai and Qidong from 2.5 hours to under 30 minutes. This development aligns with broader industry trends toward the integration of the Yangtze River Delta's transportation networks.
Source: China Daily
Chongqi Rail-Road Yangtze River Bridge Achieves Major Milestone in High-Speed Infrastructure
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China continues to advance its high-speed rail connectivity through innovative engineering. The successful installation of the main span of the Chongqi Rail-Road Yangtze River Bridge marks a critical step in enhancing regional transportation efficiency and connectivity.
