Guernsey Ports Project Manager, Joe Armstrong said the centuries old area of reclaimed land has been suffering from “progressive damage” including the movement of walls, with issues found as far back as the 1980s.
“There’s a variety of potential causes, one being defective drainage. We know there was a surface water outlet there that was damaged, and it was also undersized for the area it drained,” he said.
Pictured: Demolition took place in late July after Island Games sailing concluded.
Mr Armstrong added that the nearby Model Yacht Pond has also been responsible for water leakage, as well as waves overtopping the walls.
To rectify this Guernsey Ports has driven reinforced concrete piles 14.5m deep into bedrock and topped it with a concrete beam, which will be hidden by a reconstructed granite wall using leftover rock from the demolition.
Mr Armstrong labelled it a “robust solution” which will “substantially improve the draining capability” with much wider pipes and more gullies for runoff.
While demolishing the wall local contractors found was is believed to be old railway tracks and miscellaneous metal strips buried under the concrete, he added.
The area should be fully resurfaced and useable by Christmas.