Test train at Nine Elms

Major milestone reached on new Northern Line Extension

Over the Christmas break, the Northern Line Extension passed a key milestone after completing a journey through the new tunnels from Kennington to Battersea Power Station.

The Northern line passenger trains entered the new 3.2km tunnels at Kennington, travelling through the newly constructed step-plate junction that links the existing Northern line tunnels to the extension.

The trains then continued to Nine Elms Tube station before arriving at the extension’s second new station at Battersea Power Station. They then turned around using the new crossover junction to complete the journey back to Kennington.

TfL testing

These first test journeys mark the achievement of several complex milestones in 2020 such as:

  • Switching on a permanent electricity supply to the new Tube stations at Battersea Power Station and Nine Elms
  • Energising the traction power supply to the rails, enabling passenger trains to run along the new tracks
  • Successfully commissioning the latest edition of signalling software that connects the extension to the existing Northern line at Kennington

Work to complete the extension, which is planned for completion in autumn this year, is now focused on completing necessary signalling software upgrades and the fit-out of the two new stations which will be the first to be added to the Northern line since the extension to Morden in 1926.

Heidi Alexander, Deputy Mayor for Transport, said: “I’m delighted that the Northern Line Extension has reached this major milestone, with the project on track to welcome its first passengers in the autumn. Last year was one of the hardest in TfL’s history so it’s great to start 2021 on a positive footing, not least because the extension will support thousands of new jobs and homes for our city.” 

Stuart Harvey, TfL’s Director of Major Projects, said: “Seeing a Northern line train travelling through the extension for the first time is a significant milestone and demonstrates the commitment of our brilliant team who have been working so hard during such a challenging year.

“The Northern Line Extension continues to support jobs, homes and growth in this exciting riverside destination and has created employment through the supply chain across the UK. We are now focused on making sure the signalling software and systems are ready along with completing the final stages of fit-out of the two new stations before the planned opening of the extension in the autumn.”

Images & Video: Transport for London 

 

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