Shortlisted firms for wastewater tunnel

By Andy Brown09 March 2018

Manukau harbour south head

The wastewater tunnel will reduce sewage overflows into the Manukau harbour

Four shortlisted companies for a NZ$1.2 billion (US$873 million) central interceptor wastewater tunnel for Auckland, New Zealand, have been announced.

The central interceptor is being built by Watercare Services to reduce diluted sewage overflows into the Waitemata and Manukau Harbours by 80%.

Construction of the 13km tunnel from Western Springs and crossing Manukau Harbour under the seabed to the Mangere wastewater treatment plan is due to start next year. It is due for completion in 2025.

The shortlisted companies are: CPB Contractors, Ghella-Abergeldie Harker Joint Venture, Pacific Networks (comprising McConnell Dowell, Fletcher Construction and Obayashi) and a VINCI Joint Venture, comprising VINCI Construction Grands Projets, HEB Construction and Solentache Bachy.

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