Transport Scotland has confirmed that repairs to the landslide damage on the A77 at Cairnryan have got underway following site preparation work.
“We have been working behind the scenes in order to progress this work,” said Transport Scotland project manager Tony Black.
“The damage caused by landslips can be very difficult to repair as our geotechnical experts have to make sure that the ground is prepared properly to allow the work to be carried-out safely. This complex task is now nearing completion and the next stage is getting underway.”
The work is being delivered by Transerv with assistance from specialist contractors including Keltbray Sheet Piling.
According to a spokesman from Transerv, the project involves constructing a new retaining but requires considerable temporary works.
“Sheet piles will be driven into the northbound lane as a temporary retaining wall during a weekend closure,” he said. “The ground in front of the sheet piles will then be excavated to approximately 3m below ground level to create a working area.
“King posts will be installed in bored holes from within the working area along the line of the back of the northbound verge and pre-cast concrete slats will be installed forming a retaining wall.
“The king-post retaining wall will be tied back at the top with ground anchors and embedded into bedrock at the bottom.
“Finally the area between the sheet pile wall and king-post wall will be backfilled and the carriageway rebuilt, and the sheet piles will be abandoned in place, to avoid the need for a second road closure.”
The work is expected to be completed in February 2018.