The Tholt Y Will and Beiin Y Phott Roads are also still closed
The Mountain Road will remain closed until midday tomorrow (Thursday).
The stretch, from Ramsey to the Creg Ny Baa, was shut to the public on Friday evening due to black ice - The Creg Ny Baa pub can be accessed from Douglas and Onchan.
The Tholt Y Will and Beiin Y Phott Roads are also still closed.
Ronaldsway Met Office has issued a yellow weather warning for widespread frost and icy patches as things will turn very cold again overnight.
The warning covers all of today through to 3pm tomorrow.
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