Transport for London (TfL) has started pre-tendering for the Northern Line extension to Battersea and Nine Elms in south London this week.
The OJUE notice specifies that the work, valued at between £400m and £600m, will include “design and build of civil engineering, tunnelling and track work, lifts and escalators, power supply and station fit out works”.
Work is expected to begin in January 2014 with a estimated completion date of December 2019.
The extension will require extensive tunnelling, specifically twin-bore running tunnels stretching over 3.3km, with an internal diameter of 5.2m. New stations will also be required at Battersea and at Nine Elms, the south bank development that features the new American embassy.
TfL is looking for a single entity to carry out the project, although it specifies that “…multiple parties pooling experience to create a delivery organisation for the Northern Line Extension programme are welcomed”.
Applications for tender will be required by 10:00am on 15 April.