Closure to be lifted midday Wednesday at the earliest
The Mountain Road is to stay closed until at least midday tomorrow (8 January) following further snowfall overnight.
The Department of Infrastructure says snowploughs and gritters are currently operating along the route.
The Beinn Y Phott and Tholt Y Will roads are also closed.
A yellow weather warning, issued on Monday for ice and wintry showers, has now come to an end.
New yellow weather warning for snow showers
Could impact areas as low as 400-500ft tonight
Two people assisted out of smoke-logged property in Douglas
Structure fire saw section of Peel Road closed on Tuesday
Emergency services and DoI very busy due to icy roads
Creg ny Baa Back Road in the process of being closed
Manx Utilities addresses concerns over proposed Garff sewage works
Public feedback considered following series of 'engagement events'