• The $1.4 billion Waterview Tunnel will open in July in Auckland after a months-long delay.

The 2.4km-long, three-lane, twin-tube tunnel is part of the Waterview Connection project, touted by the Government as part of New Zealand’s biggest and most complex roading project.

It was due to be opened in April but that was held up when a fault was found with the tunnel’s jet fan and water extraction pump system.

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DAVID WHITE/FAIRFAX NZ

The new tunnel and ring road.