A tunnel-boring machine stalled beneath China’s Yangtze River while excavating a highway tunnel, forcing engineers to complete an unprecedented mid-river docking operation over two years.

Construction has finished on HS2's longest tunnel, which includes extensions with ventilation holes carved out to prevent ...

A 700-foot-long tunnel boring machine named Mary is being assembled in Washington, D.C., to dig a 5.5-mile stormwater and ...

Discover how hyperTunnel could revolutionize tunnel construction by combining swarm robotics, artificial intelligence, and ...