The Mountain Road was set to open at 1pm on Monday after being closed due to adverse weather, ice and snow.
The Department of Transport is removing barriers from the A18 Mountain road to allow the road between Creg Ny Baa and Ramsey hairpin to re-open.
Work is still being carried out on the Brandywell, or Bienn y Phott Road, which will remain closed.
The Tholt Y Will road remains closed for the time being.
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