Refurbishment
The line has been closed on a number of occasions for repairs and vehicle checks, including between 31 March 1994 and 5 April 1994.
The line was shut on 1 April 2006 for refurbishment works. It re-opened on 11 September 2006, 11 days after the predicted completion date of the project. As well as the repainting and cleaning of the trains, the work included refurbishment of the tunnels, platforms and depot, and an upgrade of the track and signalling systems. These and other works completed by 2007 were expected to boost rush-hour capacity by 25% and line capability by 12% at a cost of tens of millions of pounds. It was also claimed that the average journey will be up to 40 seconds faster.
Four new 75 hp (56 kW) battery-powered locomotives, named Walter, Lou, Anne and Kitty, were built by Clayton Equipment in Derby to haul materials and plant along the line during the closure.
Beyond these changes, Metronet had planned to refurbish Bank station by 2011 – TfL's current plan now shows that the Bank refurbishment work should be complete by 2021.
The same plan shows that TfL plans to install a further entrance to Bank station in Walbrook Square, to be completed by 2014.
Read more about this topic: Waterloo & City Line