The Mountain Road has now re-opened to traffic.
The Department of Infrastructure says the Creg Ny Baa back road is also open and the Beinn Y Phott Road is passable with care.
The Tholt Y Will Road is open and is reported to be passable with care from the Bungalow to the reservoir car park, with conditions improving below this.
A further weather warning for ice and wintry showers is set to come into force at 9pm tonight.