"All tunnel walls are now complete, the roof is on and 80% of the tunnel excavation is complete with the interior fit out underway," said Helen Cook, NZTA Communications Manager for Victoria Park Alliance. "The birdcage is also on the move back to its original location above the new section of completed tunnel and should be in place before Easter."

The 450m, three-lane, one-way northbound tunnel is being constructed using a 'cut and cover' method utilised by Fletcher Construction previously on the New Lynn Rail Trench.

"We still have a steady supply of concrete being delivered to various locations within the work zone with 6 to 10 different jobs per day with multiple deliveries per job," says Trevor Van Egmond, Operations Manager (Auckland) for Firth.  

Firth has supplied 9,900m³ of concrete to the project this year, keeping the team at the Hamer street plant extremely busy.