Great Barrier Islanders are welcoming the reopening of Tryphena Wharf, the island’s busiest port, which came back into service last week after being closed for an 18-month rebuild. The project marks the return of a vital gateway for passengers, freight, and visitors, with Auckland Transport saying the wharf is now stronger, more resilient, and expected to last for decades.
“AT and its contractor, STF Limited and design consultants LDE, have carried out a complete renewal and refurbishment of the Tryphena Wharf, replacing end-of-life pine components with more resilient materials including steel,” said AT Delivery Manager Public Transport, Joshua Hyland.
“The wharf has been rebuilt within its existing footprint and has now an expected design life of 50 plus years.”
One of the most visible changes is the strengthening of the SeaLink berthing face with new 600mm steel piles and a fender system, designed to better handle the loads of large vehicle ferries. Other improvements include hardwood decking and beams to resist warping and marine borer, new canopies and refurbished benches, and a future-proofed bollard system able to take a community-supplied fishing gantry.
The reopening closes the chapter on a sometimes contentious period for the island. In March 2024 SeaLink briefly diverted one sailing after warning of a “risk of collapse.” AT disputed that, and the adjoining ferry dock continued in use while the main wharf was shut down for reconstruction.
AT has now confirmed the project cost $8.29 million, compared with an original estimate of $5.94m. The increase came from unforeseen rock conditions requiring pile drilling, weather delays over the 18-month build, and extra work including on the new steel fender piles and replacement of the public waler face.
Hyland said the wharf is part of AT’s wider renewals programme, with Okupu and Whangaparapara facilities due for review in 2027. No opening ceremony was held due to the timing of the local board elections, but AT said it would be open to one at the new board’s request.
“The significance of Tryphena Wharf as a primary gateway to the island is well understood,” Hyland said. “The end result is a low-maintenance, long-life facility capable of withstanding the harshest weather conditions and sustained use for many years into the future.”
