The New Zealand Transport Agency


$1.4 billion

Contract Type






Waterview Connection

Unlocking Auckland's potential

When the Waterview Connection opens in early 2017 it will have the biggest impact on the way people travel around and through Auckland since the opening of the Harbour Bridge in 1959. 

Completing a motorway ring route around the city, it will unlock Auckland’s potential to become a truly world class city. It will connect the Southwestern and Northwestern Motorways (State Highways 20 and 16) to complete the Western Ring Route - a 48km motorway alternative that will ease pressure on SH1. More than just a highway, the end product will be a multi-modal corridor that provides pedestrian and cyclist routes, and public open spaces.

Half of the new motorway – 2.4km – is underground. A custom built tunnel boring machine (the tenth largest in the world) was used to construct twin, three-lane tunnels up to 40m below ground. With the tunnel excavation now complete, the mechanical and electrical fitout of the tunnels is underway.

The other main feature of the project is the Great North Road Interchange, which will connect the twin tunnels to the existing road network. Four ramps, totalling 1.7km in length will carry traffic to and from the tunnels onto the Southwestern and Northwestern motorways.

By the numbers

Tunnel spoil


Tunnel boring machine


Precast tunnel ring segments

We are delivering the project as part of the Well-Connected Alliance, alongside McConnell Dowell Constructors, PB New Zealand, Beca Infrastructure, Tonkin & Taylor, Obayashi Corporation and the Transport Agency. The Alliance will also maintain and manage the connection – including the tunnels – for 10 years after it opens.

Building the Waterview Connection Tunnels

Project Partners

Name The New Zealand Transport Agency

Role Owner and Alliance Participant

Name McConnell Dowell Constructors

Role Alliance Participant

Name Beca

Role Alliance Participant

Name Tonkin & Taylor

Role Alliance Participant

Name Obayashi Corporation

Role Alliance Participant