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Three tunnelling teams worked using six tunnel boring machines over six years on the £4.2bn project. A joint venture between BAM Nuttall, Morgan Sindall and Balfour Beatty is building the west section of the sewer. Ferrovial and Laing O’Rourke are building the central section, and Costain, Vinci and Bachy Soletanche are working on the eastern section. Amey is responsible for process control, communication equipment and software for operations.
Lining the main tunnel of London’s ‘super sewer’ site at Carnwath Road riverside in Fulham
Together, they are working on 24 sites across London.
Construction is due for completion in 2025.
Above ground at the chambers Wharf site in Bermondsey
Underground performance
Sir Neville Simms, chair of Tideway said: “Completion of tunnelling for London’s new super sewer is testament to the hard work and contributions of thousands of people and organisations, over many years – and it brings us closer to the ultimate goal of a cleaner River Thames. This performance celebrates a significant milestone in our efforts to create a more sustainable London for our growing population and we are pleased to commemorate the end of tunnelling in such a unique way.”
The performance will take place at Tideway’s Chambers Wharf site and can be viewed at Tideway’s YouTube channel here: https://www.youtube.com/tidewaylondon
The November/December 2025 issue of Construction Management magazine is now available to read in digital format.
Powered Access
CM, in partnership with IPAF, has launched a new survey to explore the industry’s views and experiences with powered access machines on construction projects.
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