Underground Construction of London Super Sewer Completed - Thames Tideway Tunnel Lid Placed - Video – Heavy Lift News
23 Apr 2024

Underground Construction of London Super Sewer Completed – Thames Tideway Tunnel Lid Placed – Video

  • Underground construction on the super sewer is now complete 
  • Tunnel will dramatically reduce sewage pollution into Thames  
  • ‘Commissioning’ phase to begin soon, ahead of full operation in 2025 

Work to build London’s super sewer, including its tunnels and shafts, is now fully complete following the lifting of the final piece of the puzzle into place in east London.  

The super sewer, known formally as the Thames Tideway Tunnel, is a 25km-long sewage tunnel designed to dramatically reduce sewage pollution in the central London River Thames. 

In a typical year, tens of millions of tonnes of storm sewage spill into the River Thames. Once fully operational, the new infrastructure will reduce those spills almost completely.  And now, the project is closer than ever to its ultimate goal of improving the health of the Thames – after Sarens lifted the 1,200t concrete lid on to the top of a deep shaft at Abby Mills in Stratford, 3.84km (1.76 miles) almost due North of  the O2 Arena.

Tideway, the company building the super sewer, has now built the full 25km, 7.2m-wide main tunnel, a 4.5km connection tunnel in south-east London, and a 1.1km tunnel in south-west London.  

Abbey Mills is the endpoint of the main Thames Tideway tunnel, where sewage will be transferred into the Lee Tunnel and onwards to Beckton for treatment. Both the Lee Tunnel and the main Thames Tideway tunnel also serve as storage reservoirs to store wastewater during heavy rainfall.

 

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