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ENGINEERS AT King's Cross successfully pushed a 2,065t rail bridge over the East Coast Main Line during the Christmas holiday. The enclosed bridge will carry the Channel Tunnel Rail Link as it emerges from a tunnel 1km north of St Pancras. The bridge slide spanned 75m and used temporary supports to take the aluminium clad, steel framed structure across the main line (NCE 12 December 2003). The bridge was built by Watson Steel before Dutch specialist Lastra undertook the slide. The whole deck was raised to run on greased girders, which had cleat plates welded along its length. Hydraulic rams pushed the structure in 1m increments from these plates. More than 60 staff from contractor Kier-Nuttall and project manager Rail Link Engineering were on site during the 55 hour possession from midnight on Christmas Eve.

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