Months after a sequence of storms battered Great Barrier, complex engineering means some road repairs will take another year. A January system that dropped approximately 250mm of rain was followed by further destructive weather on April 12, and April 24.
While initial work restored basic access to key transit routes, limits remain on Puriri Bay Road, Rosalie Bay Road, and two sections of Aotea Road.
The compromised sections are subject to vehicle restrictions, in some cases barring heavy trucks and trailers, while long-term stabilization plans are finalized.
“AT contractors identified 57 overslip and underslip sites across the roading network following the January 2026 storm event,” Auckland Transport spokesperson Grant Elliott said. “By March 2026, the AT maintenance contractor had cleared all overslip material from the island.”
The island’s steep topography means the remaining underslips are complex to repair, as the land supporting the roadbed has dropped away entirely. Structural engineering is required before the thoroughfares can safely carry heavy traffic again.
“18 underslip locations require remediation, five require further investigation and detailed design, and the remaining sites are being managed through ongoing monitoring,” Elliott said.
“Major slip repairs are now in detailed design… Construction is scheduled to commence in August 2026, with completion targeted for June 2027.”, he added.
Cushla Buchanan, manager of the Great Barrier Island Service Centre, said the region must adapt to a permanent shift in climate patterns. “The recent run of storms certainly feel unusual, but unfortunately are increasingly becoming ‘the new normal’ as we have had several significant rainfall and storm events in recent years, associated with ex-tropical cyclones and atmospheric rivers,” Buchanan said.
She noted that managing widespread infrastructure damage requires an integrated operational response from local and regional authorities. “From an Emergency Response Team (ERT) perspective, our response is a coordinated team effort built on established relationships and pre-planned arrangements across partner agencies,” she added.
