Bolton Retaining Wall


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The scheme compromised of the removal and replacement of a 280m long, 3m high, failed existing mass masonry retaining wall. The project was completed between an existing reservoir and busy carriageway. Traffic disruption was kept to a minimum allowing two way traffic through 90% of the construction phase and was completed within time and budget.

The schemes involved the following work elements:

  • Installation of temporary works which allowed for the drilling of the carriageway to depths of 9 metres using a lorry mounted augur.
  • Placing of King Post I Beams up to 9 metres long with a concrete surround.
  • Installation of MGF Panels which retained the carriageway during the demolition and construction phase.
  • Demolition and excavation of the existing failed mass masonry wall.
  • Construction of reinforced concrete retaining wall including reinforcement steel pan shutters and concreting.
  • Masonry walling to retaining wall.
  • Installation of back of wall drainage.
  • Masonry walling to reinforced concrete stem with a mass masonry parapet.
  • A manufactured coping to match the existing half round type.