Measuring 57 km in length, the Gotthard Base Tunnel is the longest railway tunnel in the world. On this guided tour, a window in the Amsteg access gallery permits a direct view of trains rushing by.

Stretching 22 kilometers, this engineering marvel will officially begin operations next year.

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Officials warned it could be months before the Gotthard can be reopened, compounding transport problems Italy already faced due to the closure of another tunnel through the Alps - the Mont Blanc ...

Lying 2,480 metres beneath the Aiguille du Midi summit, it is the world’s second deepest tunnel in operation after Switzerland’s Gotthard Base Tunnel. Various closures took place throughout ...

Carey tunnels on the Hudson River side, and the Queensboro Bridge, Queens Midtown Tunnel, Williamsburg Bridge, Manhattan Bridge and Brooklyn Bridge on the East Side. Drivers will be charged when ...

He was particularly proud of Implenia’s involvement in all four current transalpine routes, including the second tunnel of the Gotthard road tunnel and the Brenner base tunnel. In the newspaper ...

The concept of a transatlantic tunnel has existed for several decades without significant progress, but recent breakthroughs in vacuum technology have made the idea much more viable, with tech CEO ...