A design mistake on the structures which carry the overhead lines used to electrify an north east London rail route means work will finish late.
The 22.4km stretch of London Overground line between Gospel Oak and Barking has been undergoing electrification works for eight months and is due to reopen to passengers on 27 February.
But Network Rail has said that along the route a number of the Series Two System structures, which carry the overhead lines, were incorrectly designed and could not be installed. This delay has been compounded by late delivery of materials. Now it says the line will require weekend work and be fully closed again later this year so the project can be completed.
“I have instructed the project team to quickly deliver a robust plan to finish the work before new trains arrive next year, and passengers can be reassured that the line will reopen later this month to diesel trains as planned. A full review into what went wrong has already begun,” said Network Rail’s route managing director for Anglia, Richard Schofield.
Network Rail is delivering the project, which is funded by the Department for Transport and Transport for London (TfL).