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BOXED IN

BOXED IN: Main contractor Edmund Nuttall has successfully completed the UK's first box jack under a live motorway. Weighing 3,500t, the 45m long concrete box is 8.5m high by 14m wide and will carry a new £6M dual carriageway link between two roundabouts on the A43 under the M1 motorway (NCE 12 December 2002). Box jacking was chosen by the Highways Agency instead of the much cheaper cut and cover method of construction to minimise disruption on the busy motorway. Carriageway settlement ...

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