Culver Dr. and Alton Pkwy. Intersection Improvement Project (CIP 311905)


SCH Number
Lead Agency
Irvine, City of (City of Irvine)
Document Title
Culver Dr. and Alton Pkwy. Intersection Improvement Project (CIP 311905)
Document Type
MND - Mitigated Negative Declaration
Project Applicant
City of Irvine
Present Land Use

Document Description
The proposed Project entails minor widening and lane restriping of the intersection at Culver Drive and Alton Parkway, within the City of Irvine, including the following improvements: • Adding a fourth northbound through lane on Culver Drive; • Removing the southbound free right turn lane on Culver Drive and converting it to a standard right turn lane; and removal of the existing pedestrian island; • Adding a southbound right turn overlap phasing on Culver Drive coordinated with the eastbound dual left turn phasing on Alton Parkway (prohibiting eastbound U-turn movement); • Extending the eastbound and westbound left turn pockets in both directions on Alton Parkway approaching the intersection at Culver Drive; • Adding concrete bus pads at existing bus stops located at the northeast (Culver Drive), northwest (Alton Parkway) nearest the retail business at 3755 Alton Parkway, currently occupied by Olive Garden Italian restaurant, and southeast (Alton Parkway) corners of the intersection; • Adding a new bus stop and bus pad on the northwest corner (Alton Parkway) of the intersection nearest to the retail business at 3995 Alton Parkway, currently occupied by Starbucks coffee shop; • Modify / improve supporting traffic signal, medians, sidewalks, and landscaping, where applicable and; • Providing enhanced striping to the existing on-street bike lanes on all four (4) legs of the intersection. Additional roadway improvements include signage, traffic signals, streetlights, utility relocations, drainage and water quality improvements, retaining walls, landscape, and lighting. The proposed Project is one of the mitigations identified in both 2010 and 2015 Irvine Business Complex (IBC) Vision Plan Traffic Studies and would improve circulation in both the short- and long-term to the intersection by providing capacity enhancements and improve circulation.

Contact Information
Cheryl Lea
City of Irvine
1 Civic Center Plaza PO Box 1975
Irvine, CA 92623-9575

Phone : (949) 724-7313


33°40'51.08"N 117°48'40.83"W
Cross Streets
Culver Drive and Alton Parkway
State Highways
I-405 - 1 mile
BNSF/Metrolink - 1.66 miles
Woodbridge High School - 0.9 miles
San Diego Creek - 0.28 miles

Notice of Completion

Review Period Start
Review Period End
Development Type
Transportation:Local Road (Improve Existing Intersection at Culver Dr. and Alton Pkwy.)
Local Action
Other Action
Project Issues
Aesthetic/Visual Agricultural Land Air Quality Archaeologic-Historic Biological Resources Coastal Zone Drainage/Absorption Economics/Jobs Fiscal Impacts Flood Plain/Flooding Forest Land/Fire Hazard Geologic/Seismic Greenhouse Gas Emissions Housing Job Generation Minerals Noise Population/Housing Balance Public Services Recreation/Parks Schools/Universities Septic System Sewer Capacity Soil Erosion/Compaction/Grading Solid Waste Toxic/Hazardous Traffic/Circulation Tribal Cultural Resources Vegetation Water Quality Water Supply Wetland/Riparian Wildlife Growth Inducing Land Use Cumulative Effects
Reviewing Agencies
California Air Resources Board California Department of Conservation California Department of Fish and Wildlife, South Coast Region 5 California Department of Parks and Recreation California Department of Transportation, District 12 California Department of Transportation, Division of Aeronautics California Department of Water Resources California Highway Patrol California Native American Heritage Commission California Natural Resources Agency California Public Utilities Commission California Regional Water Quality Control Board, Santa Ana Region 8 California State Lands Commission Department of Toxic Substances Control Office of Historic Preservation State Water Resources Control Board, Division of Drinking Water


Environmental Document
Culver-Alton_NOI_07-02-2020   PDF 122 K ISMND Culver-Alton_Initial_Study_DRAFT 07-2020_Signed   PDF 20075 K ISMND-Appendix A Mitigation Monitoring and Reporting Program   PDF 171 K ISMND-Appendix B Traffic Analysis Memorandum   PDF 4282 K ISMND-Appendix C Conceptual Landscape Plan   PDF 2558 K ISMND-Appendix D Preliminary Drainage Report   PDF 8271 K ISMND-Appendix E Air Quality Technical Study   PDF 19766 K ISMND-Appendix F Data Summary from Biological Reconnaissance Survey   PDF 3951 K ISMND-Appendix G GHG Analysis Report   PDF 19792 K ISMND-Appendix H Initial Site Assessment   PDF 39956 K ISMND-Appendix I Preliminary Water Quality Management Plan   PDF 20281 K ISMND-Appendix J Noise Study Report   PDF 19610 K Summary_Form_for_Document_Submittal_Culver-Alton   PDF 595 K
NOC_Culver-Alton_07-02-2020   PDF 373 K

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