Gotthard Base Tunnel, Switzerland

On 15 October 2010, right on time, Sissi bit through the last few metres of granite deep under the Swiss Alps. “Sissi” is the name of the nine metre-high tunnel boring machine which allowed the breakthrough of the Gotthard Base Tunnel on that autumn day. This construction connects the northern side of the Alps with Erstfeld in the Urner Valley and Bodio in the Canton of Tessin on the southern side. With its 57 km it is the longest railway tunnel in the world. In this case, a continuous track is laid in the east and west tunnels respectively. As a flat rail route, the connection allows use of high speed trains.

With 57 km it is the longest railway tunnel in the world.
Commencement of construction in 1999 and commissioning in December 2016

170 km 

170 km of 120 mm² CuAg contact wire
70 mm² Bz messenger wire
850 km copper and more than 100 km Al wires

1999 - December 2016

Transtec Gotthard

Gotthard, Switzerland

 

 

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