Contract won to build $1.2B NZ wastewater tunnel

Work on New Zealand’s largest wastewater project, the $1.2 billion Central Interceptor tunnel, is set to begin in May, following the construction contract award.Work on New Zealand’s largest wastewater project, the $1.2 billion Central Interceptor tunnel, is set to begin in May, following the construction contract award.

Ghella Abergeldie Joint Venture and Watercare have signed the contract to build the tunnel and associated infrastructure, which will stretch over 13 kilometres from Western Springs to the Māngere Wastewater Treatment Plant in Auckland.

The Grey Lynn Tunnel, a 2-kilometre long extension has also been awarded to the JV as part of the construction contract.

Mick Boyle, Abergeldie CEO, said the Central Interceptor tunnel construction is exactly the type of project that suits Abergeldie.

“It is complex infrastructure that will help build a better community by providing the people of Auckland with a greatly improved environment,” he said.

“The Ghella Abergeldie Joint Venture is also very much looking forward to working with Watercare, a valuable client that we feel we will be able to work with collaboratively to ensure the delivery of the Central Interceptor project will be a success on many levels.”

Mobilisation will start in May 2019 and the whole project is expected to be completed by 2025.


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