Home General Interest Tunnelling completed at Bank Tube station

Tunnelling completed at Bank Tube station

The project to modernise and expand Bank Underground station in London has reached a major milestone as tunnelling work is now complete.

The tunnelling, which forms part of the programme to expand the size of the station by 40 per cent, has seen more than 1.3km of tunnels constructed since May 2017. More than 200,000 tonnes of material have been excavated from under the City of London, one of the most historic areas of the country. The work was often intricate and great care was taken to avoid disrupting any of the 31 listed buildings along the route of the new running tunnel.

With space at such a premium above ground, extra space was excavated below ground to store spoil and allow workers to continue to carry out their work.

A new southbound running tunnel for the Northern line has been dug, with the existing tunnel to be converted into a passenger concourse with six new cross passages linking to the platforms on either side. Three new escalator barrels have also been excavated to link the Northern line to the DLR and to the new entrance that is being built on Cannon Street, and a new link tunnel will connect the Northern and Central lines.

Stuart Harvey, TfL’s director of major projects, said: “Bank Tube station is a crucial link between many lines and is one of the busiest interchanges on the Tube network. Work restarted on site again in May and this is a huge milestone for the project. Once completed, there will be more space underground for customers to change from one line to another making journeys quicker and more comfortable for those travelling into the City.”

Part of the tunnelling work saw the project team cut through deep-level piled foundations of one building, which required careful excavation and the installation of a new load-support system to support the existing foundations while still allowing a tunnel to pass through them.

By the end of winter, the civil work on the new station entrance on Cannon Street will also be completed, with work on the new platforms also well underway.

Once completed, the new parts of Bank Tube station will greatly increase the space available in the station and reduce journey times considerably. New moving walkways will connect customers from the Northern line to the Central line, and the new entrance will provide direct access to the Northern line.

Nigel Wordsworth BSc(Hons) MCIJhttp://therailengineer.com

SPECIALIST AREAS Rolling stock, mechanical equipment, project reports, executive interviews


Nigel Wordsworth graduated with an honours degree in Mechanical Engineering from Nottingham University, after which he joined the American aerospace and industrial fastener group SPS Technologies. After a short time at the research laboratories in Pennsylvania, USA, Nigel became responsible for applications engineering to industry in the UK and Western Europe. At this time he advised on various engineering projects, from Formula 1 to machine tools, including a particularly problematic area of bogie design for the HST.

A move to the power generation and offshore oil supply sector followed as Nigel became director of Entwistle-Sandiacre, a subsidiary of the Australian-owned group Aurora plc. At the same time, Nigel spent ten years as a Technical Commissioner with the RAC Motor Sports Association, responsible for drafting and enforcing technical regulations for national and international motor racing series.

Joining Rail Engineer in 2008, Nigel’s first assignment was a report on new three-dimensional mobile mapping and surveying equipment, swiftly followed by a look at vegetation control machinery. He continues to write on a variety of topics for most issues.

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