China’s domestically developed high-speed rail shield tunneling machine, “Linghang,” has successfully completed the construction of the 11.18-kilometer underwater section of the Chongming–Taicang Yangtze River tunnel, marking a significant milestone in the country’s infrastructure development.
The Chongming–Taicang Yangtze River tunnel is a key transportation project linking Chongming District in Shanghai with Taicang City in east China’s Jiangsu Province. With a total length of 14.25 kilometers, the tunnel is designed to enable high-speed trains to pass beneath the Yangtze River without reducing speed, greatly enhancing regional connectivity and transportation efficiency in the Yangtze River Delta.
The successful completion of the underwater section demonstrates China’s advanced capabilities in shield tunneling technology and high-speed rail engineering. The “Linghang” machine, independently developed in China, represents a new generation of intelligent tunneling equipment, capable of operating safely and efficiently in complex geological and high-pressure underwater environments.
During construction, advanced technologies such as unmanned material transportation systems and intelligent monitoring were utilized to ensure safety, precision, and efficiency. These innovations not only improved construction quality but also set new standards for future large-scale infrastructure projects.
Once the tunnel becomes operational, it is expected to significantly shorten travel times between Shanghai and surrounding regions, promote economic integration within the Yangtze River Delta, and support the coordinated development of regional industries. The project will also strengthen China’s high-speed rail network and contribute to sustainable transportation by providing a faster and more efficient alternative to traditional travel routes.
The completion of this milestone highlights China’s growing expertise in the construction of ultra-long underwater tunnels and reinforces its position as a global leader in infrastructure engineering and technological innovation.
