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Viaduct strengthening work finished three months early

Contractor Costain has this week completed strengthening work on the M53 Bidston Moss Viaduct in the Wirral three months ahead of the 31 December deadline.

Costain has restored the structure for client the Highways Agency to increase traffic load capacity, allowing historic weight restrictions on the viaduct to be removed. The strengthening work was part of a £89.9M improvement project, which remains on target to be completed by spring 2012.

The strengthening work called for more than 1M man hours and 100km of new weld to strengthen 3.7km of steel box girder. Follow-on refurbishment activities including painting, drainage, lighting renewal, cathodic protection, joint replacement and other highway works can now begin.

ECI team

The integrated early contractor involvement (ECI) team consists of:

  • Client: Highways Agency (also representing Merseytravel and Wirral Council)
  • Principal contractor: Costain
  • Designer: Amey
  • Bridge strengthening: Cleveland Bridge UK
  • Access, blasting, painting contractor: Denholm
  • Electrical contractor: VVB

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