Video taken by a NZTA Waka Kotahi team member shows the large slip which has set back the reopening of State Highway 1 along the Brynderwyn Hills.
The road was first damaged during Cyclone Gabrielle in 2023, and has been closed since February 2024 for critical repairs.
The road was due to open by May 13, however the latest slip has set the date back. A new opening timeframe has not yet been announced.
In February, 1News reported Northland businesses were expected to be “hit hard” by the closure.
In a statement yesterday, Waka Kotahi said the slip occurred over the weekend at Kauri Tree Corner on a slope teams were working to stabilise.
“There has continued to be movement in the hillside over the last couple of days, with a substantial amount of material falling today, April 30.
“NZTA is undertaking further geotechnical assessments to determine the approach for stabilising the hillside based on this new slip, under urgency, so we can continue the repair work underway to shore up the road for winter and provide resilience in the short to medium term.”
NZTA national manager of infrastructure delivery Mark Kinvig said: “This must be fixed before the road can safely reopen to traffic. We understand this is not the news anyone wants to hear.”