I-5/SR-78 Interchange Improvements Project
Summary
SCH Number
2026041362
Lead Agency
California Department of Transportation, District 11
(DOT)
Document Title
I-5/SR-78 Interchange Improvements Project
Document Type
NOP - Notice of Preparation of a Draft EIR
Received
Document Description
The purpose of the Interstate 5/State Route 78 (I-5/SR-78) Interchange Improvement Project is to improve safety and traffic flow at the interchange. The project will focus on addressing the heavily traveled westbound SR-78 to southbound I-5 connection, as well as improving access to local communities, coastal resources and recreational destinations. These improvements aim to reduce congestion on SR-78, limit cut-through traffic on local streets, and improve travel conditions for residents, visitors, and regional commuters.
Contact Information
Name
Amanda D'Elia
Agency Name
CA Dept. of Transportation, District 11
Job Title
Sr. Environmental Scientist, Specialist
Contact Types
Lead/Public Agency
Phone
Email
Location
Cities
Carlsbad, Oceanside
Counties
San Diego
Regions
Southern California
Cross Streets
Interstate 5 and State Route 78
Zip
92054
State Highways
5, 78
Railways
SDNR - Coaster & Sprinter
Schools
Surfside High (Continuation), Palmquist Elementary, Cont. below
Waterways
Loma Alta Creek, Buena Vista Creek, Buena Vista Lagoon
Other Location Info
Full list of schools within 2-mile buffer:
• Laurel Elementary
• Jefferson Middle School
• Oceanside Unified School District Adult Transition Program
• Mission Elementary
• Oceanside High School
• Surfside High (Continuation)
• Lincoln Middle School
• Palmquist Elementary
• South Oceanside Elementary
• Buena Vista Elementary
• Carlsbad Seaside Academy
• Magnolia Elementary
• Valley Middle
• Jefferson Elementary
• Kelly Elementary
• Christa McAuliffe Elementary
• Coastal Academy Charter
• Casita Center for Science/Math/Technology
• Bella Mente Montessori Academy
• Grapevine Elementary
• Hope Elementary
• Calavera Hills Elementary
• Calavera Hills Middle
• Audeo Charter II
• Sage Creek High
Notice of Completion
State Review Period Start
State Review Period End
State Reviewing Agencies
California Air Resources Board (ARB), California Coastal Commission (CCC), California Department of Fish and Wildlife, Marine Region 7 (CDFW), California Department of Fish and Wildlife, South Coast Region 5 (CDFW), California Department of Parks and Recreation, California Department of Toxic Substances Control (DTSC), California Department of Transportation, District 11 (DOT), California Department of Water Resources (DWR), California Highway Patrol (CHP), California Native American Heritage Commission (NAHC), California Natural Resources Agency, California Public Utilities Commission (CPUC), California Regional Water Quality Control Board, San Diego Region 9 (RWQCB), California State Lands Commission (SLC), California Transportation Commission (CATC), Office of Historic Preservation, State Water Resources Control Board, Division of Drinking Water, State Water Resources Control Board, Division of Water Quality
Development Types
Transportation:Highway/Freeway (Interchange Improvements)
Local Actions
Transportation
Project Issues
Aesthetics, Air Quality, Biological Resources, Coastal Zone, Cultural Resources, Cumulative Effects, Economics/Jobs, Energy, Flood Plain/Flooding, Geology/Soils, Greenhouse Gas Emissions, Growth Inducement, Hazards & Hazardous Materials, Hydrology/Water Quality, Land Use/Planning, Noise, Population/Housing, Public Services, Recreation, Transportation, Tribal Cultural Resources, Utilities/Service Systems, Vegetation, Wetland/Riparian
Public Review Period Start
Public Review Period End
Attachments
Draft Environmental Document [Draft IS, NOI_NOA_Public notices, OPR Summary Form, Appx,]
Notice of Completion [NOC] Transmittal form
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.