Project Summary

As part of the Department of Transport & Main Roads’ plans to upgrade Cleveland Redland Bay Road, McIlwain Civil were engaged to duplicate approximately 1.2km of the sub-arterial road including the construction of two new bridges and signalising the intersections at both Ziegenfusz and Dinwoodie Roads.  McIlwain Civil were awarded the contract based on the strong relationships developed with the Department of Transport & Main Roads and subcontractors and suppliers on previous road infrastructure projects.

One of the major challenges of the project is the high traffic volumes using the existing roadway.  Detailed Traffic Management planning was undertaken to ensure minimal disruption to existing motorists as well as the safe passage of pedestrians and cyclists during construction.

Due to the nature of the existing ground the contract includes significant ground improvement works including preloading of bridge embankments for a period of 3 months, specialised subgrade improvement and treatment of Acid Sulphate Soils.  Constructing these works in a period of intense rainfall throughout October 2010 to April 2011 was a testing time for the project team but demonstrated a commitment to getting the job done.

The works include the construction of two side by side single span post tensioned precast concrete deck unit bridges.  The bridges are founded on permanently lined cast in place piles socketed into the underlying rock.  The bridges are constructed over an existing culvert to increase the flood immunity of the new pavement.

The project also includes the construction of two three way signalised intersections as well as upgrading the road lighting along the length of the duplication.  Construction of shared pathways including across the new bridges as well as dedicated bicycle lanes will mean increased safety for cyclists and pedestrians. 

• 2.4 Ha of Clearing & Grubbing
• 5,000m3 of Excavation
• 1,800m3 of Replacement of Unsuitable Material with Rock & Select Fill
• 960m of Reinforced Concrete Pipe (up to 1200mm dia.)
• 3,500m of Kerbs and Kerb and Channel
• 3,200m of Subsoil Drainage with special backfill
• 4,000m3 of Subgrade Replacement
• 5,500 tonne of Cement Treated Working Platform
• 13,000 tonne of Asphalt Pavements
• 400m of Guardrail
• 3,500m of Electrical & Traffic Signal Conduits and Cabling
• 50 New Lightpoles
• 250m of 900mm dia. Cast in Place Piles
• 200m3 of Structural Concrete for Bridgeworks
• 44 no. Precast Bridge Deck Units 
  

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  P10-41 Cleveland Redland Bay Road