Tanja Waaser

Project Manager, Transport Scotland

Tanja has over 13 years post chartered experience and over 25 year's of experience in the engineering and construction industry.

She was appointed Visiting Professor at Abertay University in 2020 and has been Project Manager for Special Projects in Transport Scotland since 2021, project managing landslide remediation works on A83 Rest and Be Thankful.

As part of her responsibilities, she is leading the geotechnical design for Minor Improvement and Structure schemes across all four the trunk road units and heads the Vulnerable Location Operations Sub-Group for geotechnical assets and geohazards leading the development of adaptation and geotechnical asset risk ranking.

She is a member of CIRIA geotechnical working group, manages SRRB research projects and is a member of the BSI committee B/526/3 “Ground investigation and ground testing”.

Her move to Transport Scotland followed a long career in consultancy. As Associate in WSP Civil, Bridges & Ground Tanja was heading the Scotland & NI Geotechnical team, managing staff in Scotland & NI and part of the Bidding/Growth and Client Care Group . She was responsible for the delivery of design packages for external and internal Clients maintaining technical excellence, bidding and business development.

My Speaker Sessions

Wednesday 29 November 2023


A83 Rest and Be Thankful: the Short, Medium and Long-Term Solutions

15:10 - 15:30
  • Based on the Scottish Landslide Study, the Rest and Be Thankful is amongst the most highly ranked debris flow hazard sites in Scotland. In recognition of the A83's importance as the primary route into Argyll and Bute a number of measures were initiated in 2012/13 resulting in the installation of debris and rock fall fences, catch pits and hillside planting.
  • Following the events in 2020 further catch pits were installed and a hillside monitoring regime was developed to enable the operation of the A83 until a long term solution is implemented.
  • This presentation will cover the short-term work carried out to date as well as ongoing monitoring of the hillside, details of the medium-term solution and also the permanent long-term solution consisting of a 1.4km debris flow shelter on the line of the existing A83.