Part of Mont Les Vaux in St Brelade is due to stay closed until the end of next week because a hole has opened up in the road.
The stretch near St Aubin on the Hill Church was shut yesterday (16 June).
The government says the road and drainage need extensive repairs.
The government says the issue wasn't apparent during the recent resurfacing work.
Officials have apologised and thanked islanders for their patience.

Call for strategy to encourage young islanders back after university
205 freight trailers arrive following Storm Austen
Stalking law set to come into force 'early next year'
First Jersey oyster shipment arrives through Granville facility
Storm Austen: Clean-up continues
Storm Austen: All you need to know
Haut Du Mont: Jury fails to reach verdict on third gas worker
Storm Austen: Government schools to close on Friday