Parts of the west Highlands and Argyll are bracing themselves for more downpours after the Met Office issued a warning for heavy rain.
The road has suffered multiple landslides this year, causing 60-mile diversions to be put in place.
The Met Office warning begins at 3am on Monday and lasts until 9am on Tuesday.
⚠️ Yellow rain warnings issued ⚠️
Yellow warning for rain for parts of Scotland from 0300 Monday to 0900 Tuesday
Yellow warning for rain for parts of Northern Ireland from 0500 Monday to 0300 Tuesday
Latest info👉https://t.co/QwDLMfRBfs
Stay #WeatherAware pic.twitter.com/RiuRmSGo4u
— Met Office (@metoffice) October 18, 2020
It affects parts of the Highlands south and west Highlands of Spean Bridge and all of Argyll.
A statement from the Met Office said that “there is a small chance that homes and businesses could be flooded, causing damage to some buildings”.
The A83 at Rest and Be Thankful will close at 6pm today.
All traffic expecting to use the road will be diverted along the Old Military Road, which runs parallel to the A83 through Glen Croe.
Eddie Ross from Bear Scotland said: “The weather forecast for Monday and Tuesday indicates that heavy rainfall is expected, which could have an impact on the hillside situated above the A83.
“Our geotechnical team will monitor conditions throughout Monday and Tuesday with a view to reopening the A83 once the weather front has passed and following a thorough safety inspection.
“Our 24/7 control room team will also be monitoring conditions across the whole network to help coordinate resource where required and help keep motorists moving.”
It is hoped this week’s pre-emptive closure will allow teams to prevent a repeat of some of the damage caused by landslips earlier in the year.
Thousands of tonnes of debris crumbled onto the road on August 4, forcing a team of around 50 workers to work around the clock to repair it.