Construction of the world’s longest – and deepest – railway tunnel, in Switzerland, is complete.
The NEAT Gotthard Base Tunnel, when it opens to the public on June 1 2016, will transport passengers from Zurich to Milan in two hours and 50 minutes, shaving almost an hour off the current travel time.
Measuring 35 miles, it surpasses Japan’s 14.5-mile Seikan Tunnel, which connects the main island of Honshu with the northern island of Hokkaido.
Work began on the ambitious project, which was funded by Switzerland at cost of around $10.3 billion or £6.5 billion, 20 years ago in 1996.
Over 2,000 workers were drafted in to excavate more than two million truck loads of earth from as deep as 8,000 below the surface of the earth.
Due to the rugged terrain of the alps, connecting important cities, such as Milan and Zurich is no mean feat, but thanks to the tunnel being almost completely flat along its whole length, trains will soon be able to travel at more than 150 miles per hour.
Excavation involved enormous tunnel boring machines cutting through almost 100 feet of rock every day. It was a dangerous process, and tragically eight workers died during construction.
[Ed. As noted in a previous post, the tunnels were bored with ” remarkable and unique pieces of equipment. Purpose-built for Crossrail by German firm Herrenknecht – one of a handful of TBM manufacturers in the world (and a PTC Creo customer).”]Read more