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Contractors working on detailed design of planned breakwaters

Contractors working on detailed design of planned breakwaters

Detailed design work on the new breakwaters proposed for Casuarina Boat Harbour and Koombana Bay is underway, marking a new milestone in Transforming Bunbury’s Waterfront.

Consultants Advisian have been appointed to prepare the detailed design and tender documentation for breakwaters and associated dredging, with construction anticipated to begin in 2024 following environmental approval.

To be delivered as part of Stage 3 – Phase 1 of the State Government project, the sheltered water provided by the breakwaters will support development of the marine industry and provide long-term assets for the community to enjoy.

A future marine servicing precinct at Casuarina Boat Harbour – to be partly built on reclaimed land – will provide serviced lease sites for marine commercial activities such as boat lifting, boat servicing and boat storage.

New commercial and recreational boat pens will be able to be constructed, allowing vessels to safely moor year-round in Koombana Bay.

The South West Development Commission is overseeing the overall project, working closely with the Department of Transport (DoT) in the delivery of Stage 3 – Phase 1.

DoT has commenced the process of the detailed design work including the appointment of consultants to carry out the work for a number of reasons, including the early identification of risks.

Production of amour rock for the breakwaters can be a lengthy process as rocks of a specific size and shape are required. As a result, the construction contract must be awarded with enough time for the successful contractor to get a head start on armour production before works commence on site.

Extra time will be allowed in the tender process to ensure prospective contractors have sufficient time to seek availability and pricing from subcontractors and suppliers such as specialist dredging subcontractors.

It’s estimated about 200,000 tonnes of armour rock and 450,000 tonnes of core rock will need to be transported to site during construction.

SWDC Transforming Bunbury’s Waterfront program director Ashley Clements said the commencement of the detailed design work marked a step forward for the project.

“Stage 3 is expected to change the face of Bunbury, with delivery of Phase 1 set to again take the city forward,” Mr Clements said.

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