Technical specifications

Scope of work

  • 2 parallel railway tunnels
  • length: 5.3 km each
  • internal diameter: 7.15 m
  • 7 cross-passages
  • 1 ventilation shaft

Construction method

  • TBM tunnelling using 2 EPB shields
  • shield diameter: 8.15 m
  • steel fibre reinforced segmental lining
  • both tunnels driven simultaneously from a retained cut structure


  • Sand
  • London Clay
  • Silt
  • Gravel

General data

Channel Tunnel Rail Link
Contract C250
single-track railway tunnel

Union Railways (North) Ltd.,
London, UK

Wayss & Freytag Ingenieurbau AG
in a joint venture

Construction period
February 2001 to September 2004

Construction costs
€ 217 m

Railway tunnel, single-track
2 * 5.3 km
Construction Method
TBM tunneling using a EPB shield
Related Projects
Oenzberg Tunnel
Oenzberg Tunnel

The 3.1 km long Oenzberg tunnel is part of the new Mattstetten-Rothrist railway line in Switzerland. This railway line improves the connection between Bern and Olten.

Read more
Eppenberg Tunnel
Eppenberg Tunnel

Four-track extension of the Olten–Aarau railway line, Switzerland: the 2.6 km long Eppenberg tunnel helps to eliminate the traffic bottleneck.

Read more
Pipe Jacking under Leipzig Main Station
Pipe Jacking under Leipzig Main Station

During the construction of the Leipzig City Tunnel in the shopping centre under the station concourse of Leipzig Main station it was not possible to carry out any works from above ground. Therefore, two pilot tunnels were driven by pipe jacking so that vertical freezing bulkheads could be built.

Read more

Cookies Policy

Our website uses cookies to improve your experience. Certain cookies can contain personal information. We deactivate Cookies, unless you allow Cooky usage.
Additional information

Allow Cookies
Do not allow cookies
Cookies Settings