After years of planning, construction work for the new 25 kilometre interception, storage and transfer tunnel running up to 65 metres below the river, known as the Thames Tideway Tunnel, started at the back end of 2016. Beginning in west London, the main tunnel generally follows the route of the River Thames to Limehouse, where it then continues north-east to Abbey Mills Pumping Station near Stratford. There it will be connected to the Lee Tunnel, which will transfer the sewage to Beckton Sewage Treatment Works. Overflows of untreated sewage into the tidal River Thames add up to tens of millions of tonnes every year. This is unacceptable and the Thames Tideway Tunnel will finally clean up the capital’s river after years of polution.
A joint venture between Laing O’Rourke and Ferrovial Agroman has landed the largest Central section drive worth £600m-£900m. The Eastern section of the tunnel has been bagged by a Costain, Vinci and Bachy joint venture and is expected to cost £500m-£800m. Another three-way consortium consisting of Balfour Beatty, BAM Nuttall and Morgan Sindall has picked up the shorter western tunnel drive, which is expected to be worth somewhere between £300m-£500m.
The tunnels will be dug with a gently sloping gradient, falling 1m for every 790m it travels at a depth up to 60m below the
surface. Under the present programme, construction is expected to start in 2016 and conclude in 2023. The total Thames Tideway Project is estimated to cost around £4.2bn at 2011 prices. Around £1.4bn of the Thames Tideway Tunnel’s construction cost will be financed by Thames Water and £2.8bn by Thames Tideway Tunnel Ltd.
Mosaic Management Systems is delighted to be involved with such a prestigious engineering project and will be providing a universal system covering all three sections of the build. Certain parts of our system are already in use inducting / onboarding workers and assigning them to the correct job role via our SkillCheck application. Toolbox talks are being issued and recorded on PDA’s (Personal Digital Assistant) while evidence, such as qualification and CSCS cards, relating to workers is being up loaded via our new Evidence Manager addition.
John Micciche MD of the company commented “We have been working in the Water Sector for a while now and have accumulated a lot of experience in this industry, but it is always great to be involved in such a high profile project”.
To find out more about our work in the Water Sector then please click here