It is hoped Fruitgrowers Rd, near Clyde, will be open before Christmas but there are no guarantees, Central Otago District Council roading manager Julie Muir says.
The road, which runs along the true right of the Clutha River, past the Clyde Dam and provides access to freedom camping spots and the Dunstan Arm Rowing Club headquarters, was closed on October 13, after a slip.
Ms Muir said Delta staff were working to move power lines away from the affected area and that could take two to three weeks. Once that was completed, the council would examine options for getting the road open, hopefully before Christmas.
It was possible the issue would come before the council or the Vincent Community Board, ''but it just depends on timing''.
She had previously said there were no recorded earthquakes in the area which might have triggered the rockfall, so it appeared to be a relatively shallow but unstable mass.
In the meantime, Contact Energy has opened the access road across the top of the dam.