From tomorrow (18 April), work will begin to shore up a collapsing quarry face in the Vale.
Building the barrier at L'Epine will allow the minor lane next to it to reopen.
The road was closed without warning last June because it was considered dangerous.
The Vale Constables were told by Guernsey Water that the barrier, or 'bund' is a sizeable structure.
The stone will be brought in by tractor, so parking in the access road will be suspended on weekdays.
Gas bills to rise in Jersey and Guernsey
The gas company has announced a 10% increase in standing charges from 14 May.
Alleged aggravated burglary at Guernsey garage
Guernsey Police cordoned off the Vale garage until mid-morning after an incident in the middle of the night.
Rock face above two of Guernsey's south coast beaches made safe
Work is underway to clear loose stones overhanging the steps at Petit Port and similar work will be carried out at Moulin Huet.
5,000 Guernsey patients included in States data breach
The States has apologised, after private data on healthcare debts owed by 5,000 locals was sent by email to an islander living in the UK.
States defends decision to put Guernsey beauty spot cafe up for tender
Guernsey's government is releasing more details about the Fermain Café agreement, following a public backlash and petition to keep the current tenant in place.
Guernsey charities launch awareness campaign #WithoutUs
The Association of Guernsey Charities wants islanders to understand the consequences of losing their services, as the sector faces challenges.
Meet 'Angus' who has hitchhiked from the USA to Guernsey
Guernsey's Animal Shelter is looking after a large black beetle after a local family ordered a toy online and found a surprise in it.
Guernsey primary school hours adjusted
From the beginning of the next academic year, all 12 of the Bailiwick's primary schools will operate for six hours and 15 minutes a day.
