Break Through for Northern Line Extension

Earlier this month a milestone was reached in the regeneration of the Battersea area south of the Thames when tunnelling machine “Amy” reached its destination and broke through at Kennington.


The Mayor of London, Sadiq Khan, said the break through “is a momentous moment for a project that is going to bring huge benefits to south London. The Northern Line Extension is not only going to make travelling to Battersea and Nine Elms easier, it’s also going to bring tens of thousands of new jobs and homes to the area. It’s another great example of why new infrastructure is so vital to London’s success and the wider economy.”


This completes the creation of two tunnels to carry the Northern line south from Kennington to two new stations at Nine Elms and Battersea.  Each tunnel is 3.2km long.  Work started in April 2017 when Helen, Amy’s sister machine, began its round the clock journeys from Battersea to Kennington. Amy started the following month.


Tunnelling machines, by tradition, have to be named before they can start work and these two were named by local schoolchildren after the first British Astronaut, Helen Sharman, and British Aviation pioneer, Amy Johnson.


The Thames was used to support the sustainability of the project; barges transported 300,000 tonnes of material excavated during the tunnelling to East Tilbury, thus avoiding thousands of lorry journeys across London.  The earth has been used to create arable farmland.


For the full press release from Transport for London click here.

For pictures click here