Murphy has won a £45M contract to build the new north Bristol relief sewer for Wessex Water.
The new 5km tunnel will pass through the Cribbs Causeway, Filton and Lawrence Weston areas of north Bristol.
The work to build the tunnel is complicated by the fact that it will run under several key transport assets and throug a tunnel under the M5 motorway and Network Rail’s Henbury Loop.
The new sewer will increase in storage capacity ahead of future development in the area as well as reducing flood risk within the existing network.
Murphy will connect the new sewer with the existing Frome Valley Relief and Bristol Trunk Sewers. It said it had created bespoke solutions for the connection of the Cribbs Causeway and Henbury areas into the new system.
Murphy chief executive 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 10 year plan and we feel very passionately about our ability to deliver for Wessex Water customers.”
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.
Design work began in March 2018 and construction work is expected to start at the end of 2019. The work is due for completion in spring 2022.