Gotthard Base Tunnel - Allocation of Work

Allocation of Work

The contracts were assigned in sections:

• Erstfeld (the 7.7 km (4.8 mi) section from Erstfeld to Amsteg), with two tunnel boring machines (TBM) boring the two tubes. The break-through of the east tube between Erstfeld and Amsteg took place on 15 June 2009. The portal area was surface-mined, and drilling and blasting for the two branches is complete.
• Amsteg (the 11.3 km (7.0 mi) section from Amsteg to north of Sedrun), with work carried out by ARGE AGN (Strabag and Züblin Murer) On 9 December 2009, the Amsteg section was officially handed over to the tunnel's owner ready for fitting out. Civil engineering construction, concreting and lining work are all complete.
• Sedrun (the 8.6 km (5.3 mi) East tube 8.7 km (5.4 mi) West tube in the section immediately north and south of Sedrun), along with work carried out by Transco (Bilfinger Berger, Implenia, Frutiger and Pizzarotti) The final breakthrough in the west tube took place in March 2011. Civil engineering construction, concreting and lining work is all complete on Sedrun North. The northbound tubes from Amsteg to the Sedrun multifunction station (north) were handed over to the railway systems contractor Transtec Gotthard on schedule on 15 September 2011.
• Faido (13.4 km (8.3 mi) East tube 13.6 km (8.5 mi) West tube in the section from south of Sedrun to Faido), with work carried out by Consorzio TAT (Alpine Mayreder Bau, CSC Impresa costruzioni, Hochtief and Implenia and Impregilo)
• Bodio (a 15.9 km (9.9 mi) East tube 15.6 km (9.7 mi) West tube in the section from Faido to Bodio), with work being carried out by Consorzio TAT (Alpine Mayreder Bau, CSC Impresa costruzioni, Hochtief, Implenia and Impregilo) Civil engineering construction, concreting and lining works are all complete.