State Highway 2 through Waimana Gorge in Bay of Plenty will reopen tomorrow, but only during daylight hours.
The road has been closed for more than three weeks after a slip.
The Transport Agency says the road will be open between 7 in the morning and five thirty at night.
It will be continuously monitored during this time to ensure the area remains safe.
The Transport Agency says the road has to be closed at night, because staff can't see the top of the slip.
The gorge will also be closed if there is a severe weather warnning or significant rainfall forecast.