Developing construction alternatives for Thames Tideway Central

Wednesday, July 8th, 2020

Tideway is upgrading London’s sewer system to cope with the city’s growing population.  The 25km Thames Tideway Tunnel constructed under London’s river Thames will prevent millions of  tons of pollution entering the river every year. 

The tunnel starts in west London and will travel through the heart of the city at depths of 30 to 60 meters. It will intercept, store and transfer sewage waste to treatment plants in the east of London. Tunnel construction began in 2016 and is anticipated to be completed in 2024.

Dr. Sauer & Partners supported the Ferrovial Laing O’Rourke JV and its main designers proposing alternatives to improve the construction sequence of the six junctions between the main TBM tunnel and connection tunnels. Alternatives were explored to simplify the works, to shorten the programme, to reduce cost, all to the highest safety standards.

The final solution agreed between all parties was finally implemented by the main designers in the detailed design. Dr. Sauer & Partners provided Category 3 design checking services for this part of the design.

More information about the Thames Tideway Tunnel can be found on the website

Isometric of connection between SCL and TBM tunnels

Thames Tideway Tunnel (