SCH Number 2021080001

Project Info

Title

Carlotta Shoulder Widening Geotechnical Investigation

Description

Caltrans proposes geotechnical field exploration for the Carlotta Shoulder Widening Project on State Route 36 between post miles 3.9 and 6.0 in Humboldt County, west of Carlotta. The project would provide geotechnical recommendations for a proposed bridge, a soldier pile wall, and earthwork associated with shoulder widening. Geotech work would include four 70-foot borings: two near the proposed bridge and two near the proposed wall. A stand-pipe piezometer would be installed in one of the borings and periodically monitored for a period of twelve months before being removed in accordance with Humboldt County Environmental Health agency requirements. Drilling would occur in the roadway and would require lane closures. In addition, a seismic refraction survey would occur on the eastbound shoulder near Fisher Road. Minor clearing and grubbing would be required for the seismic refraction survey.

1 documents in project