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Murphy to construct 5km Bristol relief sewer tunnel

Wessex Water has announced that Murphy will construct the new £45M North Bristol relief sewer.

Wessex Water has selected Murphy to construct approximately 5km tunnel and over 1km of pipework which will pass through the Cribbs Causeway, Filton, and Lawrence Weston areas of Bristol.

The route crosses several key transport assets and includes tunnelling under the M5 motorway and Network Rail’s Henbury Loop.

When completed, the £45M project will create an increase in storage capacity ahead of future developments as well as reducing flooding risk within the existing network.

Murphy will connect the new sewer with the existing Frome Valley Relief and Bristol Trunk Sewers, and has created bespoke solutions for the connection of the Cribbs Causeway and Henbury areas into the new system.

Murphy CEO John Murphy, said: “We’re excited to be working with Wessex Water on an extremely important project for customers in the Bristol area. We have in-house tunnelling expertise within our engineering team which helped us engineer solutions that will be key to delivering this scheme. This project was a key target in our ten-year plan and we feel very passionately about our ability to deliver for Wessex Water customers.”

Design work started earlier this year and construction work is expected to start at the end of 2019.

Murphy tunnelling operations manager Sean Martin added: “This project has some really interesting and complex engineering aspects to it such as the bespoke connection methods to the existing network and the crossing under of the M5 motorway. We’re putting customers and residents at the heart of this work and will do everything we can to minimise disruption.”

Murphy will be co-located with Wessex Water for the initial design stages of the project before establishing site offices at the start of the construction phase.

The work is due for completion in spring 2022.

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