Project outline The North Bristol Relief Sewer scheme involved the construction of a 6.5km pipeline sewer to accommodate urban development in the region. An essential asset for the sewerage strategy for the next 100 years, this project was a £55m investment into the community. It provides 38,000 metres cubed of additional sewer storage capacity for the area, and directs waste more efficiently around North Bristol to the Wessex Water Recycling Centre in Avonmouth. The majority of the sewer was constructed by tunnelling underground using a tunnel boring machine (TBM), reducing the need to dig trenches. Tunnelling took place underneath key landmarks, including the M5 motorway and Network Rail’s Henbury Loop freight railway. KEY FACTS 6.5km pipeline connecting Bristol’s existing trunk sewer in Lawrence Weston to the Frome Valley £55million investment, one of the latest largest sewerage projects undertaken by Wessex Water 99.8% waste diverted from landfill - Materials used were from either re-cycled and/or sustainable sources wherever possible The Tunnel Boring Machine (TBM) used ws named Fionnuala, she is the most powerful TBM in her class, RME131SE series 19900.
