“Due to a recurring slip identified just before the road was set to re-open for northbound traffic, SH1 Brynderwyns to Waipu will not reopen today.
“Our crews are currently on site working to clear the slip and will review the cause of it given the relatively dry weather this afternoon.”
The entire route would now be reassessed and geotechnical reviews would be carried out.
Light vehicles could continue to use the local detour while heavy vehicles had to divert via SH12 and SH14.
Waka Kotahi advised motorists to expect delays and apologised for the inconvenience.
Crews had been working all day to clear steep slips and fallen trees just north of the SH12 intersection.
For a full list of current closures on the network, you can check the Waka Kotahi Journey Planner.