Barhale Completes Bridge Milestone on Northern Outfall Sewer Upgrade
Work to deliver a multi-million-pound rehabilitation programme of Thames Water’s Northern Outfall Sewer (NOS) in East London took a major step forward over Easter after a second major rail possession allowed Barhale engineers to carry out structural works and take critical material samples. The 7.5 kilometre NOS runs overground on an embankment across East London, transferring flows from a 300 square kilometre catchment to Beckton Sewage Treatment Works. At the Corporation Street project in West Ham, the NOS09 overbridges cross the District Line and c2c line. Through the 100-hour joint Transport for London and Network Rail Easter possession, civil engineering, infrastructure and tunnelling specialist, Barhale removed redundant concrete structures from the bridge spans, cut 20 samples from the existing cast iron sewer barrels for testing and undertook coring investigations at the bridge abutments and piers and additionally updated 3D scan surveys. The Easter possession prov...