Cumner Bridge - Lockyer Valley

Project Details

Cumner Bridge - Lockyer Valley

Department of Transport and Main Roads
Cumner Bridge - Lockyer Valley
Completion Date: 
February 2013
Completion Date: 
Contract Value: 


Project Scope:

Constructed between October 2012 and February 2013, the project involved bridge repairs of damage caused by the 2011 floods in the Lockyer Valley, and included:

·  Removal underwater flood debris

·  Protection of bridge piles

·  Installation of drainage systems

·  Concrete works

·  Placement of >7000 m3 of rock protection


The project team identified early, the high potential risks associated with placing rock underwater around exposed precast piles. 

Trafflec presented several options to the principal to ensure the integrity of the existing piles were maintained.  The principal accepted Trafflec’s options starting with sending commercial divers down to check the condition of the bridge piles.   The dive inspection resulted in a large amount of timber removal by crane, some weighing over a tonne.

Another option accepted included placing smaller rocks for protection around the existing piles with a “Telebelt” conveyor system prior to larger rocks being placed by loaders and excavators.  This co-operative approach employed by the contractor and the client ensured the client’s program and project objectives were achieved. 

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