Wilkinson Cridge Repairs

Wilkinson Cridge Repairs

Harding Creek, at Wilkinson Bridge, was severely eroded during high flood events over past several rainy seasons. The proposed project includes restoration of Harding Creek & stabilization of Wilkinson Bridge. The upstream portion of the creek would be restored to repair the eroded channel on eastern bank by constructing a wall consisting of extra heavy pipe embedded into concrete footing. The eroded area would be backfilled with rip-rap, gravel & earthen material & covered by a chain link fence & filter fabric to prevent further erosion. Rip-rap ~36 & 42 in diameter would be placed on channel bottom to raise the elevation by ~3 ft to match the foot of the retaining wall on the western bank. All loose material under the bridge would be removed & a slurry mix would be used to fill in scoured volds & to stabilize the bridge.

Orange

California Department of Fish and Wildlife, South Coast Region 5 (CDFW), California Department of Parks and Recreation, California Native American Heritage Commission (NAHC), California Regional Water Quality Control Board, Santa Ana Region 8 (RWQCB), California State Lands Commission (SLC), Department of Toxic Substances Control, Department of Water Resources, Office of Historic Preservation, Resources Agency, California Department of Transportation, District 12 (DOT)

California Department of Transportation, District 12 (DOT)

Other (repair bridge; improve flood control)

bridge repair

Aesthetics, Agriculture and Forestry Resources, Air Quality, Biological Resources, Coastal Zone, Cultural Resources, Cumulative Effects, Drainage/Absorption, Flood Plain/Flooding, Geology/Soils, Growth Inducement, Hazards & Hazardous Materials, Hydrology/Water Quality, Land Use/Planning, Mineral Resources, Noise, Population/Housing, Public Services, Recreation, Schools/Universities, Septic System, Sewer Capacity, Solid Waste, Transportation, Vegetation, Wetland/Riparian, Wildfire