Which Is The World's Longest Tunnel That Took 17 Years to Build?

The world's longest tunnel is Switzerland's Gotthard Base Tunnel, which has a length of 57.1 kilometers (35.5 miles) and passes through the Swiss Alps. This railway tunnel is also considered the world's deepest tunnel. After more than 17 years of construction, the tunnel was finally completed in 2016. The tunnel's purpose was to improve freight transportation through one of Europe's most difficult terrains, reduce traffic congestion, and shorten travel times.

 

The Gotthard Tunnel is a true engineering marvel. Engineers had to overcome significant geological challenges, including high rock pressure, underground water, and temperature differences deep below the surface. The tunnel was bored using massive machines and required extreme construction precision.

 

The tunnel's design includes two single-track tubes with emergency exits, ventilation systems, and advanced safety technologies. Trains travel through it at speeds of up to 250 km/h (155 mph), making it a crucial link between Northern and Southern Europe for both passengers and freight transportation.

 

The Gotthard Tunnel is particularly important for freight transportation. Before the tunnel's construction, trucks had to use mountain roads to transport cargo through the Alps. Bad weather conditions, such as snow or rain, often caused difficulties. Now the Gotthard Tunnel facilitates both passenger and freight transportation.

 

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