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London, United Kingdom2024Water Infrastructure

Thames Tideway East

A 6.9km deep tunnel intercepting combined sewer overflows, protecting the River Thames from 16 million tonnes of annual pollution.

Thames Tideway East - View 1 of 3

The eastern section of London's super sewer, Tideway East, comprises a 7.2m internal diameter tunnel constructed at depths of 35-65m through complex London Clay and Lambeth Group geology. Seven drop shafts and two vortex drop structures manage hydraulic transitions. Real-time monitoring via fiber-optic distributed sensing ensures long-term asset performance.

Key Facts

Project Value

£1.1B

Tunnel Length

6.9 km

Tunnel Diameter

7.2 m

Awards & Recognition

British Tunnelling Society - Project of the Year 2024

NCE Tunnelling Awards - Large Project Winner

Services Provided

Tunnel EngineeringGeotechnical EngineeringHydraulic ModelingDigital Twin

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