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Mountain route flowing now

Case Studies | February 1, 2007 | By:

Traffic on Highway 330 through California’s San Bernardino Mountains returned to near normal last fall after CalTrans reopened the route to motorists following three months of detours and closures.

The route between Highland and Running Springs had been closed off and on while a $7.5 million slope stabilization project in two locations was completed.

Two primary components of the project were a 25-ft.-high rock wall, constructed with the help of 4-ton boulders, and a 150-ft. embankment with a geogrid/geotextile covering below the highway. This cover plus the curving embankment redirect water below the roadway, while the rock wall at the bottom prevents erosion, said a CalTrans representative.

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