By rosebell
In order to advancing the tunneling main works contract for the Teddington Direct River Abstraction in west London,Thames Water has launched a tender.
A recycled water conveyance tunnel from Mogden Sewage Treatment Works to Teddington, is content of the design, build, test and commission tender. With the aim of connecting a new tertiary treatment plant in Mogden STW to the proposed outfall on the bank of the River Thames upstream of Teddington Weir, a new almost 4.2km long tunnelled conveyance route approximately 3.5m internal diameter would be driven by a TBM and constructed, whereas the tunnel would have four shafts.
For linking the River Thames to the existing Thames Lee Tunnel for water abstraction, it also includes a smaller diameter tunnel, up to 2.2m internal diameter. This tunnel is due to be installed by pipe jacking.
With a value of £242m, the NEC4 Engineering and Construction Contract comprises two stages, while stage One is going to provide early contractor involvement during Thames Water’s planning and development consent process.
In case of issuing a notice to proceed with Stage Two, delivery and construction, the contract is expected to be concluded in October next year. A water available for use target has been set for March 2033.
The award criteria are weighted 70% on quality and 30% on price.
The enquiry deadline is June 20, 2025 and the deadline for requests to participate is July 7, 2025.
Click here to view the tender notice.
