TfL have now made public the details of the public consultation for the extension of the Northern Line to Battersea via Nine Elms.
As was indicated in the leaflet distributed last June, the chosen route is that which formed option 2 in the original Treasury Holdings Consultation. This will see a 3km tunnel constructed from Kennington to Battersea Power Station with a mid-station in south Nine Elms. The associated consultation documents confirm that cost and the high passenger levels already found on the Victoria Line are the reasons why an interchange at Vauxhall is not being pursued. Future extension to Clapham Junction is, however, acknowledged as a possibility and the tunnel layout is designed to support this. Although it is not indicated in the consultation itself, according to sources it is likely that the Kennington Loop itself will remain, in order to ensure that trains can still be turned at Kennington as part of the service pattern if required.
According to the consultation website the current intention is to submit a TWAO next Spring (which will also mark the point at which funding would need to be finalised), with the commencement of construction targeted at 2015. Construction would take approximately four years, with the drives for both tunnels likely starting from the power station site itself and then heading towards Kennington. The TBMs would be removed through the temporary shafts at Radcot and Harmsworth Streets, which would also be used for compensation grouting. TfL are also suggesting that spoil removal might be possible from the jetty at the power station site.
The website also features several factsheets which give a nice idea of possible station layouts and the likely closures required for the temporary shafts. The key images from these are reproduced below.
In addition to the information on the site itself, those wishing to question TfL about the proposal can do so at the times and locations detailed below:
- Market Towers, 1 Nine Elms Lane, SW8 5NQ on Thursday 15 November at 15:00 to 20:00 and Friday 16 November at 8:00 to 18:00
- Sainsbury’s, 62 Wandsworth Road, SW8 2LF on Friday 23 November at 12:00 to 19:00 and Saturday 24 November at 9:30 to 13:00
- Gallery on the Corner, 155 Battersea Park Road, SW8 4BU on Thursday 29 November at 15:00 to 20:00
- The Kia Oval, Executive Box 56, Kennington, SE11 5SS on Friday 7 December at 12:00 to 19:00 and Saturday 8 December at 9:30 to 13:00