The Bakerloo line would be extended from Elephant anf Castle to Lewisham (Image: Getty)
Officials have issued an update on a planned extension of a crucial line serving a major city that is thought to cost between £5.2billion and £8.7billion.
The Bakerloo line would from Elephant and Castle under the proposals.
But Transport for London (TfL) and the Mayor of London, , have said that more money is needed from central government to fund the project.
Responding to a freedom of information request, TfL said when construction could begin.
An officer stated: “The start of construction works on the Bakerloo line extension is subject to the provision of planning and adequate funding being available, with construction timescales including any closure of the line also subject to further design development.
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The Bakerloo line extension could cost more than £8billion (Image: Getty)
“It is currently anticipated that work on an extension could begin in the early 2030s and, assuming the Hayes extension was built in parallel to the Lewisham extension.
“It is estimated that work affecting Southeastern trains would begin around five years into the wider Bakerloo line extension construction programme.”
Timetabling was also discussed.
The TfL officer added: “The timetable for any future Bakerloo line extension would be confirmed once finalised.
“However, we anticipate that, once extended, there would be a service of 27 trains per hour on the core section of the line between Queens Park and Lewisham, with at least 18 trains per hour extended south of Lewisham onto the Hayes branch.
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The Bakerloo line extension has been in the offing for years (Image: Getty)
“Of these, at least 12 trains per hour would serve Hayes, with the remaining six trains per hour serving Beckenham Junction. This would provide a train at least every five minutes from Hayes and every ten minutes from Beckenham Junction.
“The timing of the first and last trains on the line would depend upon the final design of the extension, including locations for stabling and depots, however we anticipate that these would be in line with the current Bakerloo line weekday timetable, whereby the first train starts service at 5.26am and the last train finishes service at 12.53am.”
On disruption that the build may cause, they said: “During any closure of the Hayes branch that may be required as a result of constructing the Bakerloo line extension, replacement services would be provided.
“The detail of these, including mode, frequency and duration would be confirmed closer to the time.”
The officer also said: “We do not expect compensation to be provided where there is an alteration to a railway service pattern.
“It should be noted that any Bakerloo line extension on the Hayes branch would still provide direct train services to Lewisham and Charing Cross (as well as Waterloo).
“London Bridge would be accessible via an interchange at Lewisham, New Cross Gate, Elephant and Castle or Waterloo.”