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NZ utility awards major construction contract

Watercare has signed the construction contract for its NZ$1.2 billion (AU$1.1 billion) Central Interceptor wastewater tunnel.

On Thursday 14 March, Watercare signed the contract with the GhellaAbergeldie Joint Venture (JV) from the group of contractors the utility had previously shortlisted to construct the tunnel and its associated infrastructure.

The 13 km wastewater pipeline is a vital infrastructure project and forms part of a strategy to protect and enhance the natural environment.

In addition to the Central Interceptor, Watercare has announced it will deliver other projects in the area including separating stormwater and wastewater tunnels.

The largest of these projects is the Grey Lynn wastewater tunnel, a 2 km extension of the Central Interceptor.

“We want everyone to be able to enjoy clean waterways, beaches and estuaries – that’s why we’re building the Central Interceptor,” said Watercare Chief Executive Raveen Jaduram.

“It will run underground from Western Springs to the Māngere Wastewater Treatment, collecting wastewater along the way via link sewers and drop shafts.”

“We are delighted to announce that the Grey Lynn wastewater tunnel has been included in our construction contract with Ghella Abergeldie JV,” said Mr Jaduram.

“This is an extremely good outcome for Aucklanders because it means a better result for the environment without any extra cost for customers.

Project at a glance. Image courtesy Watercare.

“Together, the Central Interceptor and our western isthmus projects will reduce overflows in the area by at least 80 per cent.

“Because it is a key part of our region-wide wastewater strategy, it was important to find the best company in the world to construct it.

“So, after a vigorous tender process we chose Ghella Abergeldie JV with over 150 years’ experience working on major tunnelling and wastewater projects across the globe.”
 
Construction will start with site works in August and the whole project is expected to be completed by 2025.

For more information visit the Watercare website.

If you have a project you would like featured in Trenchless Australasia contact Assistant Editor Chloe Jenkins at cjenkins@gs-press.com.au

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