NG Tunnelling recently completed a comprehensive foul and storm sewer diversion project at Tilbury Docks — a site that presented both technical and logistical challenges due to its operational environment. Our team approached each stage of the works with precision, collaboration, and a commitment to maintaining seamless dock operations throughout.
We installed a total of 750 metres of drainage, with pipe diameters ranging from 225mm to 450mm. Excavations varied in width between 1.5m and 2.5m, requiring careful planning to ensure both efficiency and safety within the busy dock area. The project also involved constructing 14 manholes, each measuring between 1200mm and 3000mm in diameter, to support long-term access and maintenance.
Once the underground works were completed, we reinstated the concrete road surface. This process included installing dowel bars for reinforcement before applying a durable finish of hot rolled asphalt, ensuring a high-quality and traffic-resistant surface capable of withstanding heavy port operations.
Working within such a complex logistics environment demanded strong coordination. We maintained the free flow of traffic along the main road within the docks at all times and worked in close partnership with the Port Authority to minimise disruption. Throughout the project, we also liaised closely with Anglian Water to arrange for all necessary inspections and final sign-off.
This project demonstrates how our expertise in drainage and tunnelling solutions allows us to deliver technically demanding works within live, high-traffic environments — safely, efficiently, and to the highest standards.
