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Ticket hall expansion eats into Tube tunnel

CONTRACTORS ARE to slice the top off a 60m section of a Circle Line tube tunnel near London's St Pancras station as part of plans to increase station capacity.

'A series of 1.5 m sections will be removed from the top of the tunnel and replaced with steel plate girders at 800mm centres, ' said London Underground designer Roger Cox.

These will eventually be encased in concrete to create a flattened arch. This will form the base of the new subsurface ticket hall serving the Circle and Metropolitan lines at Kings Cross St Pancras.

He said most of the work would be carried out between 1.30am and 4.30am, so the line can be kept open during the day.

The Western Ticket Hall, situated between St Pancreas and Euston Road, is part of a £200M contract to be carried out by joint venture contractors Costain and Taylor Woodrow.

Also included in the plans are another new ticket hall, situated north of the existing Kings Cross underground station. The expansion encompasses extending the existing underground ticket hall at Kings Cross.

Work is due to start on site at the end of the year, with tunnel work expected to kick off next summer. Completion is scheduled for 2006.

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