Ferguson landslide, Natural geological formation in Merced River Canyon, California, US.
Ferguson landslide consists of massive rock and debris piled across the Merced River Canyon, blocking California State Route 140. The terrain is rocky and uneven, with huge boulders that slipped down from Ferguson Ridge.
A major rock collapse in 2006 blocked the highway and triggered a state emergency declaration in Mariposa County. This event forced authorities to clear the route and create new solutions quickly.
The area is important for protecting the Limestone Salamander, an endangered species living in the Merced River canyon. Managing the site requires care to keep this rare animal safe in its natural home.
Temporary bridges with traffic signals manage one-way passage around the slide, with size limits for vehicles. Visitors should expect possible delays and follow all traffic instructions carefully.
The restoration project includes building a 675-foot concrete rock shed with special engineering design. This structure uses prefabricated pieces and many rock anchors to permanently protect passing vehicles and the roadway.
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