Ghella Abergeldie Joint Venture (GAJV) is the delivery team building Watercare's Central Interceptor. The Central Interceptor is New Zealand’s largest ever Wastewater Project. 

We will be delivering close to 20km of tunnels, more than 17 shafts, a major pump station and substantial wastewater management and network infrastructure works. The Central Interceptor will run underground from Western Springs, near the Auckland Zoo, to Watercare’s Māngere Wastewater Treatment Plant.

GAJV combines more than 30 years of tunnelling expertise in New Zealand with over 150 years of Italian and international tunnelling experience and ability, to ensure the utmost skill and competence in the delivery of this landmark project.

Ghella has successfully completed numerous projects of this scale worldwide. These include the Legacy Way tunnel project in Brisbane which achieved world records in tunnel boring machine excavations. Currently, Ghella is working on some of the biggest tunnelling projects around the world, including the Follo Line in Oslo, the Sydney Metro and the Riachuelo sewage system in Buenos Aires. 

Abergeldie has successfully delivered complex underground construction projects across New Zealand over the past four decades and is one of New Zealand’s foremost shaft sinking and pipejacking contractors. Abergeldie is one of Australia’s leading three waters contractors with extensive experience working on major water and wastewater assets throughout Australia.

Ghella Abergeldie Joint Venture (GAJV)

This department oversees project planning, contract management, and financial control to ensure successful project execution.

Project Management

This department focuses on delivering engineering solutions and managing technical projects.

Engineering Services

This department focuses on ensuring workplace safety and compliance with health regulations while providing expert advice and analysis on stakeholder management.

Health and Safety

This department manages the operation and maintenance of tunneling machinery and oversees contract management related to tunneling projects.

Tunneling Operations

This department oversees the management and execution of tunnel construction and traffic operations.

Tunnel Operations

This department focuses on the planning, execution, and oversight of construction projects, as well as conducting surveys to ensure structural integrity and compliance.

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Other teams

Engineering Services

Health and Safety

Tunneling Operations

Tunnel Operations

Construction and Surveying