Technical specifications

Scope of works:

  • Construction of a sewerage tunnel
  • length: 6.950 m
  • internal diameter 7,10 m
  • external diameter 7,80 m
  • 7 shafts

Construction method:

  • TBM tunnelling using an EPB shield
  • shield diameter 8.13 m
  • Tunnel lining with 8 trapezoid segments per ring, 350 mm thick, 1.70 m wide

Geology

  • London Clay

General data

Project
Thames Tideway Tunnel,
Contract C405, Tideway West,
London, UK

Client
Tideway (Bazalgette Tunnel Limited),
London, United Kingdom

Contractor
Wayss & Freytag Ingenieurbau AG
in a joint venture

Construction period
2015 to 2021

Construction costs
GBP 416 million

Utilisation
Water/Sewerage
Type
Sewerage tunnel
Length
6.950 m
Construction Method
TBM tunnelling using an EPB shield

More information:

London’s water and wastewater system provider, Thames Water, is improving its water quality through a three-stage upgrade. Thames Tideway Tunnel is intended to carry sewerage from 34 of London’s largest combined overflows over a length of 25 km, store and transfer it to Lee Tunnel from 2023 on. The main tunnel will have an internal diameter of 7.2 m and start at a depth of approx. 30 m in Acton. From there the tunnel follows the course of the Thames through and under London’s central business district and terminating at a depth of 70 m at Abbey Mills Pumping Station.

Related Projects
Hubertus Tunnel
Hubertus Tunnel
Netherlands

A first in the Netherlands - TBM drive in the city centre: Hubertus tunnel, the longest inner-city road tunnel in the Netherlands, completes the Northern “Randweg” of The Hague.

Read more
Mine Water Drainage Tunnel, Ibbenbüren
Mine Water Drainage Tunnel, Ibbenbüren
Germany

Length: approx. 7,400 m 2 drives: West 3,230 m and East 3,8700 m in length Internal diameter: 3.60 m External diameter: 4,50 m bore diameter approx. 4.80 m

Read more
Eppenberg Tunnel
Eppenberg Tunnel
Switzerland

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