North Bristol relief sewer

North Bristol relief sewer 

Construction of the new 6.5km pipeline began in summer 2019 and is planned to finish by spring 2022. It will connect Bristol’s existing trunk sewer in Lawrence Weston to the Frome Valley relief sewer near Cribbs Causeway and will direct waste more efficiently around North Bristol to our water recycling centre in Avonmouth. 

The majority of the sewer will be constructed by tunnelling underground using a tunnel boring machine, reducing the need to dig trenches. We will even be tunnelling underneath the M5 motorway and Network Rail’s Henbury Loop freight railway.

We are working with contractors J. Murphy & Sons Ltd to construct the tunnel and lay the pipework. 

The North Bristol relief sewer forms an essential part of our long-term sewerage strategy for the next 100 years. 

Learn more about the project by watching this video and click the drop-down options below to find out relevant information for each area of North Bristol where we’ll be present.