More than £40M must be spent to safeguard the A83 Rest and Be Thankful road from the risk of landslides despite completion of an emergency relief route, Transport Scotland said last week.
The agency has accepted recommendations from consultant Jacobs that around £20M must be spent on installing additional debris flow netting and other landslide mitigation measures.
It will also act on Jacobs’ recommendation that improvement works for the Tarbet to Lochgilphead to Kennacraig section of the A83, such as realignment, widening, junction improvements and improved signage worth another £20M be carried out.
Jacobs was called in by the Transport Scotland-backed A83 task force, which was convened last summer in response to ongoing landslide disruption on the route. It produced its report in December.
The task force met last week and NCE understands the meeting heard that Transport Scotland had allocated £4M for the route in the 2013/2014 financial year and that £40M would be
set aside to ensure Jacobs’ recommendations are carried out.
No timescale has been set, however.
The £20M for landslide mitigation along the Rest and Be Thankful section will cover the installation of an additional 440m of debris flow netting, plus improvements to hillside and road drainage and hillside planting.
Other sections of the road will also be mitigated as part of the £20M spend.
Other options for the Rest and Be Thankful section considered by Jacobs included a complete re-routing of the road, construction of a tunnel and landslide protection galleries above the road.