France

Construction on the Vosges Tunnel started

The 4,019 m long Saverne Tunnel will be provided with 2 single-track bores, which will be linked every 500 m by cross-passages. This is where the Vosges range is at its narrowest. The 2 tunnel bores are to be driven one after the other using a tunnelling machine (EPB shield S-670 Herrenknecht) with a roughly 10 m diameter cutterhead – each tunnel bore possesses a 52 m² cross-section. The internal diameter of the bores amounts to 8.90 m after being lined with a single segmental shell (80 cm, division 7 + 1). Work started at the end of October 2011.

The Saverne Tunnel is the most complex...

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