Stepping up to tunnelling’s biggest challenge on the Northern Line Extension
.... and let sleeping dogs (and cats) lie. To much fanfare this week, the Northern Line Extension of the London Underground was opened. OTB Engineering is proud of its role as tunnel designer in the first expansion of the #LondonUnderground this century. The £1.1 billion major construction project began in 2015 on the two-mile twin railway tunnel between Kennington and Battersea. The two new stations, at Battersea Power Station and Nine Elms, are on a spur that connects with
