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Zimmerberg Base Tunnel 2

The Zimmerberg Base Tunnel 2 will create new capacity on the Zurich–Zug route. ILF is leading the engineering consortium and is responsible for planning, tendering, and construction management.
Transportation & Urban SpacesTunnels
Client:
SBB AG
Location:
Switzerland
Time frame:
2025 - 2040
        • Two single-track tunnels, length: each 10.8 km
        • Excavation: TBM excavation ø9./ NATM excavation
        • Double-shell lining with precast segments and in-situ concrete lining
        • One emergency and escape shaft, as well as 21 cross connections to be used as escape structures
        • Two railway infrastructure buildings
        • Cut-and-cover sections, pre-cut with excavation support
        • Geology: rock and soil
        • Connections while keeping the railway line open (underground at Zimmerberg Base Tunnel 1 and open track section)
  • Engineering
  • Project Management

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