The project would install a soldier pile wall with concrete facing directly adjacent to Arastradero Road where high storm flows eroded the roadway embankment during the winter of 2016-2017. The wall would be located from 2-5 ft from the existing roadway shoulder and would be approx 100 ft long. The space between the road and soldier pile wall would be filled with clean, imported material. The pilings would be driven to a depth of approx 20 ft. Minor dewatering of the work area may be required. Clean gravel bags would be used to divert creek flows away from the work area. Construction staging would occur on the widened roadway shoulder approx 100 ft east of the work area.
Air Resources Board, Transportation ProjectsCalifornia Department of Parks and RecreationCaltrans, District 4Caltrans, Division of AeronauticsDepartment of Fish and Wildlife, Region 3Department of Water ResourcesNative American Heritage CommissionOffice of Emergency Services, CaliforniaOffice of Historic PreservationRegional Water Quality Control Board, Region 2Resources AgencySan Francisco Bay Conservation and Development CommissionState Water Resources Control Board, Division of Drinking WaterState Water Resources Control Board, Division of Water Quality