Worksites

Closes 22 Dec 2019

Opened 14 Oct 2019

Overview

Worksites would be required at each station and shaft location to enable construction.

To construct the Bakerloo line extension we need to build the new tunnels between Elephant & Castle and Lewisham. The tunnels would be built by tunnel boring machines which produce large amounts of spoil and which need to be supplied with large amount of materials required to build the tunnels.

We have considered three possible primary worksites for the extension where tunnel boring machines would be launched. These sites are:

  • New Cross Gate 
  • Hither Green
  • Catford

We are also considering a secondary worksite as part of the Old Kent Road 1 station site to support tunnelling works as well as to build the proposed new station at that location. This worksite would build the proposed tunnels between this station and Lambeth North. This secondary worksite has been proposed as we have developed our plans and was not included in the 2017 consultation. For more information see section on Old Kent Road 1 station and factsheet 4.

New Cross Gate

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We are proposing a new station at New Cross Gate to provide an interchange with the London Overground, National Rail services and local bus routes. The station would be fully accessible and would provide step-free access and interchange.  

In the 2017 consultation we consulted on our proposed site for the station being the site of the retail park lying on the west side of the existing New Cross Gate station. A majority of respondents expressed support for this proposal.  

Since the last consultation we have developed our plans for the route alignment and what this would mean for the station and platforms. We have also developed our plans for tunnelling worksites in order to construct the extension. In addition to building the station, we consider this would be the best site for the primary worksite to launch tunnel boring machines. Our proposal for this site requires more land than we consulted on in 2017 and now includes Network Rail land to the north of the retail park. This land would enable new railway sidings to be built which would bring materials to the site and take away the spoil created from tunnelling. This would substantially reduce the environmental impacts of the construction works for the extension.   

At the last consultation we stated that there could be a potential loss of the Sainsbury’s supermarket during the construction period. As we have developed our plans for the site to incorporate the primary tunelling worksite, it has become clearer that the current supermarket, other retailers and petrol station would not be able to remain operational on the site during construction. For more information about our proposals for this site see factsheet 6.  

New Cross Gate is our proposed primary worksite for the extension. It would minimise the duration of construction, required tunnel length and associated cost. We have considered two alternative sites for a primary worksite. These are an existing rail freight site at Hither Green and a new site at Catford town centre on the retail park and playing fields south of Catford Bridge station. For more information on these alternatives see factsheets 10 and 11 

Hither Green

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An alternative primary worksite for tunnel boring machines to be launched from is an existing rail operations site and nature reserve, lying between the Sidcup and Orpington lines as they run into Hither Green station. The site is accessed via Manor Lane, a residential road with traffic-calming measures.   

Hither Green is an alternative option but is not the preferred location. This is because of the additional scale of construction and resources required and the likely environmental impacts of using this site. For further information including the pros and cons of using this site see factsheet 10 

Catford

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An alternative primary worksite for tunnel boring machines to be launched from is the Catford Hill Retail Park site and adjacent St Dunstans school playing fields known as the Jubilee Grounds. The sites lie to the south of Catford Bridge station in Catford town centre.  

This option involves two sites lying to the east and west of the existing Hayes National Rail line. The Jubilee Grounds playing field site would be required for the tunnelling works as this site runs along the Hayes line for a long enough stretch to enable us to build new rail freight sidings and their junctions to and from the Hayes line. These sidings would be required for the transportation of construction materials to, and spoil away from, the site. The Catford Hill Retail Park site would be required for the launch of the tunnelling machines towards Lewisham.   

Catford is an alternative option but is not the preferred location. This is because of the additional scale of construction and resources required and the likely environmental impacts of using this site. For further information including the pros and cons of using this site see factsheet 11 

Both alternative sites are at the end of the tunnelled extension route and would require a significant additional section of tunnelled route beyond Lewisham, which would cost more. We consider having a primary tunnelling worksite at New Cross Gate would reduce the duration of construction, required tunnel length and associated cost.

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