Vulnerability of the project to risks
It is expected that the risk of structural failure and erosion on the A83 and adjacent private land at the scheme extent will be reduced following the works, which aim to tackle slope erosion and regression. Works will be programmed as far as is reasonably practicable to avoid periods of adverse weather or heavy rainfall.
Works are restricted to the A83 trunk road verge and lower slopes within 50m of the carriageway with access to the scheme gained via the carriageway or the Old Military Road. TM will involve single lane closures with two-way temporary traffic lights. NMUs will be accommodated within the TM setup where required.
The works will reduce the vulnerability of the A83 carriageway to future high rainfall and landslips events by preventing further slope regression and the risk of scour which could critically undermine the carriageway. Therefore, it is expected that the works will reduce the severity of major disasters that would impact the environment by contributing to the robustness of the trunk road and drainage system.
These measures, along with mitigation measures and standard working practices, will be detailed in the SEMP and adhered to on site. The vulnerability of the project to risks of major accidents and disasters is considered to be low.