Route was initially shut until 9am
The Mountain Road remains closed this morning following more snowfall in the region.
Police had initially closed it from the Creg-ny-Baa to Lheaney Road in Ramsey until 9am on Saturday morning.
However, after a further assessment of the road surface, officers have decided to keep traffic off the route until midday.
Motorists are being asked to take care and drive to the conditions.
Former air traffic controller speaks out about airport issues
Mannin Line caller questions infrastructure minister over Ronaldsway 'special attention' status
First in series of 'Isle be Ready' sessions to take place next month
Representatives will share practical advice
More online services for drivers
Expansion of services should make it easier to manage vehicle and licence documents
New support centre 'an oasis' for cancer patients
New facility opens its doors on site of Noble's Hospital