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Implenia wins contract for new Bözberg railway tunnel

Swiss Federal Railways has awarded Implenia a CHF 145M (£96.7M) contract to build the new Bözberg railway tunnel in Switzerland.

The 4m corridor is being added to the Gotthard route in order to encourage a further shift of transalpine freight transport from road to rail.

The largest sub-project within this scheme is the replacement of the existing Bözberg tunnel in Canton Aargau with a new twin-track tunnel.

The northern portal of the new tunnel is located near Effingen, while the southern portal is near Schinznach-Dorf. Installation sites are being set up at both locations.

The main drilling work will be done by a tunnel boring machine starting at the Schinznach-Dorf site. A loading station will be set up on the Schinznach-Brugg-Wildegg transport route to take away the spoil.

Construction is scheduled to start in spring 2016, and the tunnel is due to become operational in 2020.

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