The A83 at the Rest and Be Thankful is now fully open to traffic.
Transport Scotland announced this morning that the road, which has been closed or partially closed since a landslip on December 1, will be open 24 hours a day from 8.30am this morning.
For the last 10 days it has only been open from 8.30am to 4pm to all but emergency vehicles.
Graham Edmond, head of road maintenance at Transport Scotland said: "Since the landslip and the clean up operation which followed, the local community have shown their patience as we worked to fully reopen the road.
“We are grateful to them and fully appreciate the impact this has had on their ability to go about their business, but it was essential we were able to carry out full geotechnical investigations to ensure the integrity of the hillside and the safety of road users, and this was simply not possible in light of the recent spell of very poor weather coupled with heavy snowfalls on the hillside.
"Safety is paramount in everything we do, and our key focus was always to ensure the safety of road users first and foremost.”
However, he added that the risk of further landslides at the site remains. The decision has been taken to reopen the road 24 hours a day as a result of additional measures to ensure the safer running of traffic during the hours of darkness.
Mr Edmond said: "Full re-opening is however dependent on the impact of the weather, and with more poor conditions forecast over the coming days, we will be monitoring this closely to ensure we respond in the best interests of those drivers using the road.
“Forecasts of heavy rain or high winds which may increase the risk of landslides may force us to close the road again."
Floodlighting on the road at the Rest and be Thankful has been put in place by Scotland Transerv and the road will be manned to ensure staff on the ground can react to events as they arise.
Additional monitoring instrumentation is also scheduled to be put in place before Christmas which will provide an early visual indication of movement of the hillside, and increase the ability to monitor the hillside during the hours of darkness.
For real time traffic information, visit www.trafficscotland.org.