SR-24 Culvert Replacement Project (EA 2X650)
Summary
SCH Number
2025091157
Public Agency
California Department of Transportation, District 4
(DOT)
Document Title
SR-24 Culvert Replacement Project (EA 2X650)
Document Type
NOE - Notice of Exemption
Received
Posted
9/25/2025
Document Description
Caltrans proposes replacing a damaged culvert on State Route (SR-) 24 in Lafayette, Contra Costa County, at the westbound off-ramp to Deer Hill Road (post mile 6.50). The damaged culvert collects water from landscaped on- and off-ramps, a park and ride facility, and surface streets and drains the water across the on- and off-ramps. The roadway will be trenched to remove and replace the damaged culvert with a new culvert of the same size. The roadway will then be backfilled and repaved with slurry cement and asphalt concrete (AC). Construction equipment may include, but will not be limited to, excavators, dump trucks, pavers, rollers, and sweepers. All work will be within the existing roadway prism and little disturbance is expected. Construction will be conducted during the spring and summer construction season beginning July 15th, 2026, and will be completed by the end of October 2026. See continuation sheet.
Contact Information
Name
Juliane Smith
Agency Name
Caltrans
Job Title
Senior Environmental Scientist (NEPA/CEQA Specialist)
Contact Types
Lead/Public Agency / Project Applicant / Parties Undertaking Project
Address
Phone
Email
Location
Cities
Lafayette
Counties
Contra Costa
Regions
Northern California, San Francisco Bay Area
State Highways
24
Other Location Info
The project is located on SR-24 in Lafayette, Contra Costa County, at the westbound off-ramp to Deer Hill Road (post mile 6.50).
Notice of Exemption
Exempt Status
Categorical Exemption
Type, Section or Code
PRC 21084; 14 CCR 15301 Class 1(c)
Reasons for Exemption
Class 1(c) Existing Facilities. The project is not anticipated to result in any environmental impacts. The project contains a number of standardized project measures which are employed on most, if not all, Caltrans projects and were not developed in response to any specific environmental impacts resulting from the project.
County Clerk
Contra Costa
Attachments
Notice of Exemption
Disclaimer: The Governor’s Office of Land Use and Climate Innovation (LCI) accepts no responsibility for the content or accessibility of these documents. To obtain an attachment in a different format, please contact the lead agency at the contact information listed above. For more information, please visit LCI’s Accessibility Site.