The Department of Infrastructure says the Mountain Road will remain closed until at least tomorrow night, along with two other routes on Snaefell.
Overnight snowfall has set back reopening efforts, with previously cleared areas iced over and covered in fresh snow.
The DOI says all three will stay shut until at least midnight tomorrow.
It says it will set out its plans for gritting the rest of the Island's roads later.
Icy conditions close airport
Ronaldsway airport says it's had to close because of freezing conditions.
Tynwald re-election losers of all ages could get £38,000 grant in future
Tynwald members who get booted out after an election will be paid six months salary no matter their age in future, if the court votes in new measures.
Steam Packet launches Manxman clothing range
The Steam Packet Company has launched a new clothing range for its newest ferry.
Doctors vote to strike in pay dispute with Manx Care
The Island's doctors have overwhelmingly voted to take strike action.
Metzeler TT Village announces move
Tyre company Metzeler says it's returning to the TT this year with its luxury glamping accommodation.
RAF sub-hunter patrolling off Island's coast
Is the RAF hunting submarines in Manx waters?
Crash means buses can't stop in Santon
A car crash has meant buses aren’t able to stop in Santon.
Popular tea room cuts opening hours
A tea room in the west of the Island says it's cutting its opening hours.
