The Department of Infrastructure says the Mountain Road will remain shut until at least tomorrow.
In an update on social media, the Doi says both it and the Beinn Y Phott Road and Tholt Y Will Road will remain shut until at least midday on Wednesday.
It says staff had begun clearing the roads but more snow fell overnight, setting back its efforts.
It says gritters have been at work today but anyone who need salt bins refilling can contact its customer services team on 850000 with the bin's location and reference number.
Castletown police station could be yours... for £250,000
Brewery advertising for operator for landmark Laxey pub
Hospice cafe reopens next week after refurb
Another one bites the gust - as Ramsey rocks cancelled
Mountain Road closed again after crash
Merchant Navy Day to be marked with memorial service
Fundraiser launched for injured MGP rider
Noel back in the saddle after handy pub pumping leaves him smiling
