The road between Peketa and Goose Bay, had been closed for three days last week and was forced to close again on Saturday after heavy winds and rain created fresh slips.
Clear skies over the last two days meant crews were able to clear the slips.
NZ Transport Agency Regional Performance Manager Pete Connors said crews worked to clear the road at several sites using helicopters and abseiling teams.
He said the road would be subject to close at short notice due to seismic activity, which triggered rockfalls.
The road would be open from 7am to 8pm daily.