Category
Construction (Commercial) » Excellence in Environment
Year
2018
Company
Ward Civil & Environmental Engineering Pty Limited
Project
McCarrs Creek Road Upgrade
Suburb
Church Point
Prize
Winner

The McCarrs Creek Road Upgrade, Church Point project was a design and construct project, involving reclamation of land at Church Point Reserve, construction of a new sea wall, realignment of the existing McCarrs Creek Road from the Church point Ferry Wharf to Rosstrevor Reserve, and construction of a new multi-storey carpark for local and Scotland Island residents.

The protection of the local marine environment and the preservation of the aesthetics of the locale were important considerations throughout the entire project.

Some of the project specific constraints used during construction works included:
•    the installation and maintenance of silt curtains beyond the limit of works in the bay to prevent construction disturbance to the surrounding environment and was specifically designed to sit 100mm off the seabed to allow safe passage for marine life but still prevent silt from leaving the site;
•    compliance with Fisheries NSW to ensure no harm to the marine flora and fauna during construction works;
•    maintaining full time access to local commuter assets including the cargo wharf and commuter wharf which were located within the worksite;
•    access for pedestrians and vehicle traffic was required continuously on McCarrs Creek Road

Sheet pile installation was staged to minimize the number of fish being trapped between the sheet pile wall and the existing land. The remaining fish were subjected to a catch and release process by licenced and trained fishermen to remove all remaining specimens prior to fill works being completed.

By installing a steel sheet pile seawall, it eliminated 1,500 m3 of concrete from the project and mitigating potential environmental hazards in a marine environment

Use of virgin excavated natural material (VENM) sandstone and sand fill under McCarrs Creek Road and the carpark. Materials were sourced from local bulk excavations.

With the removal of the existing seawall and existing sea habitat, there was a need for a fish habitat to be reinstated on completion of the seawall. This was completed by placing sandstone rocks at the base of the sheet pile wall, to provide further habitat to the marine fauna, as well as improving visual aesthetics.

Upon completion of construction works within the bay, the removal of the silt curtain was achieved by gradually pulling up the silt curtain and allowing marine fauna to gradually find their own way to the bottom of the seabed so as not to cause environmental harm and was completed in the presence of marine environment specialists who safely re-located starfish and other marine life who had inhabited the curtain. 

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