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Cooks River Bridge Repairs

Client: Roads & Maritime Services
Capabilities: Construction, Piling, Bridges
Region: Sydney (New South Wales)
Completed: August 2002

Waterway Constructions were approached by the RTA to provide urgent assistance to re-support the substructure of the Cooks River Bridge after it was found that the existing concrete piles had deteriorated beyond their design capacity. Waterway Constructions responded by establishing site operations and mobilisation of heavy plant and equipment in less than one week. The piling works were completed dur-ing the night, averaging one pile per night, by closing 4 lanes of the very busy Princes Highway. Once piling works were complete fabrication of the steel support beams were fast-tracked and installed to enable the RTA to remove the 25t load limit imposed on the bridge.

The works included:

  • driving 32no. 600 dia. steelpile casings to rock 24m below the road deck
  • drilling 6m long rock sockets below the toe of the steel casing and tremmie pouring concrete to form permanently cased reinforced concrete pile
  • installing 80t of specially fabricated heavy steel sections, much of which was below water under the existing pier
  • stressing of 96 no. 50mm dia. stress bars to re-support and underpin the existing pier caps
Cooks River Bridge Repairs

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