The road closure on the A83 at Rest and Be Thankful remained in place last night following multiple landslips in the area.
Transport Scotland’s term maintenance contractor Bear Scotland said that around 2,500t of debris from the ground movement had been caught by the catch fences above the carriageway.
The road closure was put in place on Tuesday and Bear had hoped to carry out geotechnical inspections to allow the route to be reopened but prolonged heavy rain has prevented teams from safely accessing the slope.
Bear said that its team is hoping to access the carriageway at first light today to carry out a full geotechnical inspection and evaluate its stability, before clear-up operations can get underway.
In a statement, Bear said that four of the recently installed fences have stopped the majority of material from reaching the A83 carriageway, but a large boulder has damaged one of the fences and some debris has reached the A83 carriageway and the Old Military Road below.
Machinery was being mobilised yesterday to the site to begin clear-up operations at the Old Military Road and the A83 carriageway as soon as the inspection is complete. Work will then begin to open the Old Military Road as an alternative route before the debris fences on the hillside are cleared and repaired to allow the A83 to be reopened.
Bear Scotland north west network manager Tommy Deans said: “Teams have been working hard in very challenging conditions today to try and assess the extent of the landslips affecting the Rest and Be Thankful, however heavy rain is making it difficult for teams to assess the likelihood of any further occurrences elsewhere on the slope, with approximately 75mm of rain recorded at the Rest and Be Thankful yesterday alone.
“The specialist debris fencing has prevented the vast majority of material from reaching the roadside, however some debris has spilled onto the carriageway below with some reaching the Old Military Road.
“Safety continues to be our top priority and until we are completely satisfied that no further material will come down the hillside, the A83 and Old Military Road will remain closed.
“A full geotechnical assessment is being planned for the slope above the carriageway to check on the condition of the hillside, and once this is given the green-light we’ll begin the clear-up of the Old Military Road and A83 carriageway. We’re mobilising machinery into position tonight to help our teams continue these efforts tomorrow.
“In the meantime we encourage people to follow the diversion route via Dalmally or use alternative forms of travel. We’ll continue to update stakeholders and encourage all road users to check Traffic Scotland for the latest travel information.”