Sinkhole Repair- 1X110/0424002245
Summary
SCH Number
2024090180
Public Agency
California Department of Transportation, District 4
(DOT)
Document Title
Sinkhole Repair- 1X110/0424002245
Document Type
NOE - Notice of Exemption
Received
Posted
9/6/2024
Document Description
Repair a sinkhole on Route 84, La Honda Rd, at postmile 17.04, near Fox Hill Road in the Town of Woodside in San Mateo County. Caltrans Field Maintenance has backfilled the sinkhole with asphalt concrete to prevent roadway closure at this location as a temporary measure. The sinkhole developed at the westbound (WB) SR 84 within the intersection area, approximately 10 feet from an existing drainage inlet where an existing 18” corrugated metal pipe (CMP) cross culvert is located. From our onsite investigation, the invert of the 18" CMP cross culvert has been undermined and created voids under and around the culvert. The roadway sinkhole formed is likely a result of the soil loss under and around the culvert through the undermined invert. Work must be completed to prevent further damage or loss of life.
Contact Information
Name
MARIAM FARRAR
Agency Name
CALTRANS DISTRICT 4
Job Title
Project applicant District 4 Caltrans Senior Environmental Scientist
Contact Types
Lead/Public Agency / Project Applicant
Address
Phone
Email
Location
Cities
Woodside
Counties
San Mateo
Regions
San Francisco Bay Area
Other Location Info
Route 84, La Honda Rd, at postmile 17.04, near Fox Hill Road in the Town of Woodside in San Mateo County.
Notice of Exemption
Exempt Status
Categorical Exemption
Type, Section or Code
PRC 21084; 14CCR 15301
Reasons for Exemption
Class 1. Existing facilities/Structures (d) Restoration or rehabilitation of deteriorated or damaged structures, facilities, or mechanical equipment to meet current standards of public health and safety, unless it is determined that the damage was substantial and resulted from an environmental hazard such as earthquake, landslide, or flood.
County Clerk
San Mateo
Attachments
Notice of Exemption
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