Highway 99 - Ten Mile Slide

Highway 99 is the most direct connection between Lillooet and Kamloops and is vital to the local and regional economy, as well as the Xaxli’p community. This project will address the slope instability at the Ten Mile Slide location.

The scope of the project includes planning, engineering and construction to implement stabilization measures above and below Highway 99 as well as the reconstruction of the highway.

Oblique Map View of Ten Mile Slide


  • Phase 2, the main stabilization contract, commenced construction in September 2019. The project is on schedule to be completed by Spring 2021.

Project cost

  • There is $60M allocated to this project and it is currently on budget.

Project Benefits

  • Improves safety and reliability for motorists, the trucking industry and emergency vehicles (Regional hospital services are provided in Kamloops)
  • Maintains community connectivity and cohesiveness for Xaxli’p while reducing hardships as a result of slide activity
  • Maintains the most direct connection between Lillooet and Kamloops, which is vital to the local and regional economy, as well as the Xaxli’p community
  • Responds to requests dating back to the mid-90’s for a long term solution
  • Limits future costs associated with extra-ordinary maintenance and stabilization measures due to retrogression

Public Consultation

  • Consultation with the Xaxli’p community and key stakeholders began early and is ongoing
  • Public information sessions were held at both the Xaxli’p Office and Lillooet Rec Centre in March 2017
  • Additional Xaxli’p community information sessions were held in September 2018 in Kamloops, Lillooet and Vancouver

The following posters and boards were displayed at the community information sessions and are available for viewing through the links below: