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Gotthard Base Tunnel

Switzerland

All-hydraulic forming of complex cross-section! The 7400 m long Erstfeld contract section is the northern part of the Gotthard Base Tunnel, also including the construction of two 400 m long underground branch-offs built using the drill-and-blast method followed by CIP concrete lining.

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Gotthard Base Tunnel
Gotthard Base Tunnel
Gotthard Base Tunnel
Gotthard Base Tunnel
Gotthard Base Tunnel

Project data

Year of completion
2011
Project duration
10 Months
Country
Switzerland
Address
Erstfeld
Contractors
JV 'ARGE AGN'
Structure
Tunnel
Type of structure
Mining-type tunnel

Floor-slab

Construction method
Segmented (non-monolithic)
Cross-sectional shape
Curved/round
Clear width
17.65 m
Clear height
10.40 m
Formed length of tunnel
370 m
Length of concreting section
10 m
Number of casting sections
37

wall formwork

Construction method
Segmented (non-monolithic)
Clear height
5.65 m
Formed length of tunnel
370 m
Length of concreting section
10 m
Number of casting sections
37