Date lodged: 17 October 2018
To ask the Scottish Government what evaluation it has made of the effectiveness of its landslide mitigation measures for roads in each year since 2007.
Answered by: Michael Matheson 14 November 2018
The effectiveness of landslide mitigation measures can only be evaluated if and when an incident occurs.
Landslide incidents on the Scottish trunk road network since 2007 have focussed on the A83 Rest and Be Thankful, where the landslide mitigation measures have been successful on a number of occasions in achieving their objective of reducing the impact of landslides, thereby helping to keep the region open for business.
Since the installation of the Red Option suite of mitigation measures over 2013 and 2014, it is estimated that these measures have helped keep the A83 open for at least 23 days when it would otherwise have closed.