Drivers are advised that Highway 99 is currently closed approximately 15 kilometres north of Lillooet due to ongoing slope activity at the Ten Mile Slide site.
Accelerated movement over the last 24 hours at this historically challenging slide site has reduced safety, and the ministry has proactively closed Highway 99 between Fountain Valley Road and Sallus Creek Road.
An alternative route is available using highways 12, 1 and 97, and people should continue to check DriveBC.ca and @DriveBC on Twitter for the most up-to-date highway travel information.
Ministry staff and geotechnical engineers continue to monitor activity at the site using electronic monitoring equipment. The road will be reopened once movement has subsided and Highway 99 is once again safe for travel.
A $60-million slope stabilization project is underway at this location, which has experienced ongoing slide activity for several decades. This has severely affected the Xaxli͛p community, local businesses, the trucking and tourism industries, and the general public.
Work includes installing tied-back concrete and composite piles below the highway, 200 soil anchors above the highway and reconstructing the highway to two lanes with a guardrail.
The stabilization project, which will improve the long-term safety and reliability at this location, is expected to be completed in spring 2021.
For more information on this important stability work on Highway 99, visit: https://www2.gov.bc.ca/gov/content/transportation/transportation-infrastructure/projects/highway-99-ten-mile-slide?keyword=ten&keyword=mile&keyword=slide