The Department of Infrastructure's confirmed the Mountain Road will stay shut until tomorrow lunchtime, Friday, November 21.
However it says conditions on the Tholt Y Will Road have improved and it'll be reopened as far as the Bungalow later this afternoon, Thursday, November 20.
It's due to the Met Office's yellow weather warning, which is in place for sub-zero temperatures until 3pm tomorrow.
The DOI says further gritting will take place on other routes this evening.
Peel ready for bonfire and fireworks later
Government: "UK never told us about child murderer"
Farm shop's newest worker needs your name suggestions
Bus Vannin gives update on staffing problems and routes affected today
Toilets vandalised for fourth time in a month
Poppy gets fur-ever home after sparking rescue operation in Douglas
Council gets eight complaints about James Brown in six months
More bus staffing problems this weekend