Construction crews in western China have completed the boring of the 13.7 miles (22.1 kilometers) stretch of the world’s longest expressway tunnel. The boring of the Tianshan Shengli Tunnel was ...
China is rapidly installing PV along highways, combining slopes, tunnels, and service areas to generate renewable electricity ...
Tunnels have long been a testament to human engineering, bridging divides created by nature. The Gotthard Base Tunnel in ...