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A behind-the-scenes site tour of the O Mahurangi Penlink project has given Auckland Council elected representatives an opportunity to better understand the reasons behind the project’s delay.
Although Penlink is funded and managed by the NZ Transport Agency (NZTA) rather than Auckland Transport, local councillors and local board members were keen to inspect progress firsthand.
Among those attending the July 24 site visit were Rodney Ward Councillor Greg Sayers, Albany Ward Councillors John Watson and Victoria Short, and Hibiscus & Bays Local Board Chair Alexis Poppelbaum.
NZTA has earlier advised that Penlink’s completion date has moved from late August 2026 to September 2029.
Councillor Greg Sayers said the delay had been attributed primarily to significant and unexpected geotechnical challenges encountered during construction.
“The explanation we received was that unforeseen ground conditions have had a major impact on the construction programme,” Sayers said. “These engineering challenges have delayed the project and are expected to increase the overall project cost.”
Sayers said the scale of the project was becoming increasingly visible.
“From the motorway, the earthworks for the Penlink off-ramp are clearly visible, and the good news is that the bridge piers across the Weiti River are now in place.”
He said another major milestone is expected later this year.
“Around mid-October, traffic is expected to be switched onto the new road alignment currently under construction near New World at the Whangaparāoa Road end of the project. That will enable construction to continue on the next stage of the works.”
Questions were also raised about the highly visible road widening works currently underway at the Silverdale motorway interchange.
“While these works are not directly part of the Penlink project, they are potentially complementary”, Sayers said. The current upgrade involves converting the existing emergency stopping lane into a peak-period bus priority lane. In the future, that bus lane could potentially be extended all the way back to the Penlink off-ramp, significantly further improving travel times for public transport.”
Buses will also be utilising the Penlink road and bridge further connecting Whangaparāoa to the regional bus network.
Sayers said NZTA also confirmed that the Wēiti River Bridge will initially open as a two-lane highway, with one lane in each direction and widened shoulders accommodating walking and cycling.
“I’ve consistently advocated for a four-lane bridge,” he said. “However, NZTA explained that the bridge has been future-proofed and designed with sufficient structural capacity to accommodate clip-on extensions if traffic volumes require widening to four lanes.”
Those future extensions could provide two additional traffic lanes while retaining dedicated walking and cycling facilities, avoiding the need to replace the bridge.
NZTA also confirmed its proposed toll charges for Penlink. A full-length trip is expected to cost $2 during off-peak periods and $3 during peak periods for light vehicles, while heavy vehicles will pay double those amounts.
