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ROOT OF THE PROBLEM

Wind power

Three months of stabilisation work near Marsh in Somerset were completed this week, with the A303 due to re-open on Friday 16 December. Work began on 20 October after engineers discovered that a section of road running along the hillside was only supported by tree roots. It had suffered one collapse four years earlier.

The £2.9M Highways Agency project was delivered by consultant Mott MacDonald and contractor Balfour Beatty.

Work involved cutting into the downhill side of the road and installing 209 continuous flight auger piles 12m to 15m deep. These piles were then capped individually and covered over with gabions and fill before the road was reinstated.

The project was delivered on time and to budget.

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