Implenia Schweiz AG

Mr. Erwin Scherer
Global Head Tunelling

Thurgauerstr. 101A
8152 Glattpark (Opfikon)

Tel: +41 58 4747474
E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Web: Implenia Switzerland - The Leader construction services company - Implenia AG

ITA Contact: Jens Classen

Tel: +49 172 3083039
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Gotthard Base Tunnel

  • conventional drill & blast southwards of total 1'495 m single lane tunnels, of which 225 m in deep rock formations and highly tectonized zone
  • waterproofing on 2'800 m in the two single lane tunnels towards north
  • 4'520 m base mat concrete, 970 m kicker and approximately1'660 m inner concrete lining
  • Inner concrete lining completed for the Emergency Stations South & North; concrete lining for the four bifurcations (crossover) in progress
  • Concrete production to date: app. 33'000 m3 sprayed concrete and app. 80'000 cast in situ concrete (total volume 113'000 m3)

ImpleniaGotthard Base Tunnel (lots Bodio -554 and Faido -452 )

  • Lot 554 (Bodio): TBM excavation and concrete linings in both single lane tubes completed, length twice 14'800 m
  • Lot 452 (Faido): excavation and sup-port completed in Multifunction Facility including both emergency stations, both crossover, overpass and ventilation shafts (length overall 2’500 m, total excavation volume 680’000 m3)
  • Lot 452 (Faido), 10th march 2009: TBM excavation eastern tube 5'200 m and western tube 4'400 m (current rock overburdens exceeding 2,000 m)
  • Lot 452 (Faido): successful crossing of the Piora Syncline (sugar grain dolomite)

ImpleniaDurchmesselinie Weinbergtunnel (Transit tunnel under the Zurich main station)

  • Excavation with Gripper TBM (dia. 4.75 m) of safety and rescue tunnel, 1'050 m
  • Excavation of access shaft Brunnenhof, 150 m deep and break-through with neighboring lot Oerlikon
  • Installation of main TBM (dia.12.3 m) and excavation of the first 200m of the 4'300m long double track railway tunnel.
  • Installation of complete back-up of the TBM and ready to continue excavation Pumped Storage

Scheme Nant de Drance (Valais, Switzerland)

  • Successful Contract award of the civil works including all underground works, caverns, waterways, intake structures and the concrete aggregates production. Total value of the contract 530 mio. CHF
  • Preparatory works for access tunnel and site installations in progress

Other main tunnel projects

  • Bypass tunnel of Lungern, Canton Obwalden
  • N16 Jura Highway tunnel Sous le Mont, Canton Berne
  • Bypass tunnel of Bulle, Canton of Fribourg
  • N16 Jura Highway tunnels Neu Bois, Canton Jura