Authorities assessing the collapsed road in Calstock have said that it could take months for it to be repaired.
Speaking with Radio Cornwall this morning, a spokesman from Cormac warned that it will take a long time to repair the Commercial road in Lower Kelly, with the possibility that it might not be completed for months.
Around a dozen residents of the road have been left unable to drive their cars to and from their homes.
But it is understood that the pavement on one side of the road is still passable on foot.
Commercial road first began to subside on Christmas morning and experienced a second shift later in the day.
Roughly 20 metres of the road, which is close to the river Tamar, has collapsed.
Five families were evacuated from their homes yesterday after concerns were raised over the structures of their houses, but they have since returned.
No one was injured during the subsidence, but a car parked close to the slip had to be towed by fire crews.
Ian Craft, who lives in Lower Kelly, said that the road is a dead-end and many residents are effectively trapped as they can’t drive their cars.
Workers from Cornwall Council have been investigating the subsidence and it is understood that they might consider putting a temporary road through nearby woodland.
Mr Craft said that he still has power, but is worried that it might be lost if any more of the road slips.