Barhale wins £36m East London sewer remediation

Aaron Morby 11 months ago
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Thames Water has appointed Barhale to deliver essential remediation works on a Victorian gravity sewer as it passes above the Jubilee Line and Docklands Light Railway in East London.

The Northern Outfall Sewer passes above the Jubilee Line, Docklands Light Railway and Manor Road
The Northern Outfall Sewer passes above the Jubilee Line, Docklands Light Railway and Manor Road

The innovative £36m relining of the Northern Outfall Sewer at Manor Road in West Ham will improve sewage flows from the Hackney Wick area to Beckton Sewage treatment works.

The 7.5km-long wastewater asset runs across East London and forms part of the bed for the popular Greenway footpath in the area.

Barhale will also facilitate surveying of the condition of the cast iron pipe and hangers that suspend the sewers over Manor Road prior to replacement or refurbishment.

Northern Outfall Sewer over Manor Road greenway bridge

The sewer is made up of five separate, parallel sewer barrels: Three were originally constructed by Sir Joseph Bazalgette between 1860 – 1865 and then another two were added around sixty years later. Each existing sewer barrel is 2.7m in diameter.

Works are constrained by the need to maintain flows through the sewer throughout the programme and to minimise disruption to train travel.

This will require a series of carefully phased isolations with no more than two sewers taken out of service at any one time, keeping at least three live at all times.

Once isolated, Barhale will strengthen the existing structure with a specially-designed Duplex Stainless Steel pipes.

Barhale is working with Thames Water to conduct the design and build project.

The project will increase the design life of the asset for another 120 years. Completion is expected in summer 2027.

 

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