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.
Castletown police station could be yours... for £250,000
Fancy owning a landmark building in the south of the Island?
Brewery advertising for operator for landmark Laxey pub
Could you run one of Laxey's best-known pubs?
Hospice cafe reopens next week after refurb
A much-loved café will be throwing open its doors again next week.
Another one bites the gust - as Ramsey rocks cancelled
A huge live music event in Ramsey this weekend has been cancelled.
Mountain Road closed again after crash
The Mountain Road is currently closed after a crash.
Merchant Navy Day to be marked with memorial service
Merchant Navy Day will be marked on Island with a remembrance service for those who lost their lives at sea.
Fundraiser launched for injured MGP rider
A fundraiser's been launched to raise money for a Czech rider who was injured during the MGP.
Noel back in the saddle after handy pub pumping leaves him smiling
Noel Edmonds has thanked a pub in the north of the Island for helping out when he felt a little deflated.
