Underground sub-surface lines contract to be re-awarded

London Underground is to re-let a signalling contract for the Circle, District, Hammersmith & City and Metropolitan lines (the Sub-Surface Lines) after the original contractor, Bombardier ran into problems.

Bombardier was awarded a £354m contract in June 2011 to equip 190 miles of track (including 25 miles in tunnel), 113 stations, 191 train-sets, 49 engineering trains and six heritage trains by 2018. The original plan was to install the CITYFLO 650 ATC automatic train control system, an innovative communication-based train control system (CBTC), which has been installed in 13 other lines in various countries.

Bombardier is in the process of delivering 191 new S-Stock trains for the lines, which, combined with the new signalling system, will deliver increased capacity on the Sub-Surface Lines.  The SSL lines comprise 40% of the network and carry around 25% of the passengers.

Bombardier won the signalling contract in 2011 but London Underground says the work will now be re-let.

“We have been working closely with Bombardier to find a way forward on what is one of the most challenging and complex pieces of work on the Tube,” said LU managing director Mike Brown. “However, it has become apparent to both parties that for the work to be completed within or close to the planned deadline, we need to push on with works with a different contractor.”

638/Jan 14

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