Men 128 / 253 Culvert Rehabilitation Draft Environmental Document

Men 128 / 253 Culvert Rehabilitation Draft Environmental Document

Caltrans is proposing to rehabilitate or replace deteriorated culverts and appurtenant structures at 270 locations on SR 128 and 253 in Mendocino County. There are 213 of these culverts crossing SR 128 and 57 of the culverts cross SR 253 from the 128/253 junction to the south end of Ukiah. Trenchless technologies or jacking methods may be utilized to replace the existing culverts at some locations. Other proposed work includes replacing or adding downdrains, overside drains, anchor assemblies, rock energy dissipaters, and concrete headwalls/endwalls. Replacement of non-standard drainage inlets with standard drainage inlets will also be completed at appropriate locations. Ditch grading of the existing channels will be needed to provide for positive and uninterrupted flows. Erosion control will be implemented around culverts where the ground is disturbed.

Booneville, Ukiah

Mendocino

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), Department of Water Resources, Office of Historic Preservation, Resources Agency, State Water Resources Control Board, Division of Water Quality, California Department of Fish and Wildlife, Bay Delta Region 3 (CDFW)

California Department of Fish and Wildlife, Bay Delta Region 3 (CDFW)

Transportation:Other (Culvert Improvements)

Aesthetics, Agriculture and Forestry Resources, Air Quality, Coastal Zone, Cultural Resources, Drainage/Absorption, Economics/Jobs, Flood Plain/Flooding, Geology/Soils, Hazards & Hazardous Materials, Hydrology/Water Quality, Noise, Population/Housing, Public Services, Recreation, Septic System, Solid Waste, Transportation, Vegetation, Wetland/Riparian, Wildfire, Wildlife