California Department of Transportation, District 1
Tieback Retaining Wall
NEG - Negative Declaration
Present Land Use
The project site is the SR-1 transportation facility located on the rural Mendocino coast. Adjacent lands are used for grazing and rural residential.
Caltrans proposes to replace a failing log crib wall on the west side of SR-1 by constructing a new tieback retaining wall. The project is located approximately 3.2 km (2 miles) south of the intersection of SR-1 and SR-128, and 5.6 km (3.5 miles) north of the community of Elk. This section of SR-1 crosses a landslide complex that is approximately 200 m (656 ft.) wide at the roadway level. The southbound lane is showing signs of failure as a result of movement of the hillside, and the log crib wall supporting the roadway is deteriorating. The new tieback wall would meet geotechnical conditions, safety, operational and design standards. If the crib wall or hillside fails, the roadway would be closed for an extended period of time without any state highway detours available.
Aesthetics, Air Quality, Coastal Zone, Cultural Resources, Cumulative Effects, Geology/Soils, Hazards & Hazardous Materials, Hydrology/Water Quality, Noise, Public Services, Transportation, Vegetation, Wildlife
Air Resources Board, Transportation Projects, California Coastal Commission (CCC), California Department of Parks and Recreation, California Highway Patrol, California Native American Heritage Commission (NAHC), California Regional Water Quality Control Board, North Coast Region 1 (RWQCB), California State Lands Commission (SLC), Department of Toxic Substances Control, Department of Water Resources, Office of Historic Preservation, Resources Agency, California Department of Fish and Wildlife, Bay Delta Region 3 (CDFW)
Reviewing Agency Comments
California Department of Fish and Wildlife, Bay Delta Region 3 (CDFW)
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