The New Zealand Transport Agency is expecting permanent repairs to the slip site under State Highway 29 at Tauriko are going to take about nine weeks to complete.
Work on the bank, which fell away a couple of winters ago, is about to begin.

At the time traffic was diverted across to the western side of the highway and temporary
repairs took several months.
Speed limits will again be imposed to allow contractors safe access while the bank is permanently shored up, and the highway will again be re-marked to move traffic toward the centre of the road.
Rod James, the NZTA's Bay of Plenty state highway manager, says nearby roadside parking will be unavailable during the works.
He recommends the 'park and ride' users park in The Lakes Area. Several temporary patch ups have already been carried out, but the spot remains vulnerable.
This more substantial project will provide a permanent fix.
"A retaining wall will be built to protect the highway from further risk of being undermined from slippage," says Rod.
"It will be buried approximately three metres deep into the ground and protrude about four metres above the ground. 'Anchors' up to six meters long will be pushed horizontally into the ground to hold the wall in place.
"It's a complex piece of work and will involve some disruption to traffic for the duration of construction."
The highway is built over about four metres of Taupo ash which is over a less porous sub soil. Rain water descends through the ash layer and collects under it, causing slips.