Teddington Direct River Abstraction (Tdra) Tunnelling Main Works Contract (Mwc) Tender

Procurement Summary

Country : United Kingdom

Summary : Teddington Direct River Abstraction (Tdra) Tunnelling Main Works Contract (Mwc)

Deadline : 07 Jul 2025

Other Information

Notice Type : Tender

TOT Ref.No.: 119936991

Document Ref. No. : SO2267

Financier : Self Financed

Purchaser Ownership : Public

Tender Value : Refer Document

Purchaser's Detail

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Tender Details

Design, build, test and commission of the following two main components: i) A recycled water conveyance tunnel from Mogden Sewage Treatment Works (STW) to Teddington. A new approximately 4.2km long tunnelled conveyance route approximately 3.5m internal diameter (ID) would be driven using a Tunnel Boring Machine (TBM) and constructed to connect a new Tertiary Treatment Plant (provided by others) in Mogden STW to the proposed outfall on the riverbank of the River Thames upstream of Teddington Weir. The tunnel would have four shafts. ii) River abstraction and transfer to the existing Thames Lee Tunnel (TLT): The river abstraction would be located approximately 175m upstream of the proposed new outfall. The abstracted river flow would be conveyed to the TLT through a smaller diameter (up to 2.2m ID) pipe installed using a pipe jacking technique. The scope will include, but not be limited to: Construction Design activities Architectural Building M&E Civils and Structural engineering including earthworks Enabling works Drainage Geotechnical Ground movement impact Mechanical, Electrical, Instrumentation, Control and Automation (MEICA) including a SCADA (Supervisory Control and Data Acquisition) system Hydraulic Modelling Materials durability Renewables / Carbon mitigation Rivers and Watercourses Traffic & Highways Shafts & Tunnels Utilities Disposal of excavated material The NEC4 Engineering and Construction Contract comprise two stages, with a decision point as to whether to procee...

Documents

 Tender Notice