World's largest tunneling machine reaches construction milestone
english.shanghai.gov.cn|
December 17, 2025
Linghang, the world's largest-diameter high-speed rail shield tunneling machine, passed the 10,000-meter mark on Dec 16.
Independently developed in China, it's now just 1,000 meters from the Yangtze River's south bank — marking a major milestone for the Chongming–Taicang Tunnel, a key link of the Shanghai–Chongqing–Chengdu high-speed railway.
