State Route 133
Improvement Project

The California Department of Transportation (Caltrans) District 12, in cooperation with the County of Orange, proposes to make improvements to State Route 133 (Laguna Canyon Road) in both directions from just south of El Toro Road to State Route 73 between Post Miles 3.1 and R4.1, in the city of Laguna Beach. The project will make drainage improvements, widen the shoulders, add a Class II Bike lane, and underground overhead utilities. The project also includes safety improvements from 1,700 feet (ft) south of El Toro Road to 1,200 ft north of El Toro Road. The purpose of the project is to improve roadway deficiencies by bringing SR-133 to design standards, improve safety in the vicinity of the SR-133/El Toro Road intersection, and  reduce flooding by improving drainage flow.

The information in the Initial Study with Proposed Mitigated Negative Declaration/Environmental Assessment is intended to disclose potential environmental impacts and proposed avoidance, minimization, and/or mitigation measures to reduce impacts associated with the project.

Public Hearing Display Boards

Project Fact Sheet

Project Benefits Summary

Flyover Video - Northbound State Route 133

Public Notice


Cover page/General Information/Title Page
Proposed Mitigated Negative Declaration
Table of Contents
CHAPTER 1 - Proposed Project
 Affected Environment, Environmental Consequences, and Avoidance,
Minimization, and/or Mitigation Measures

2.1 Land Use
2.2 Community Impacts
2.3 Utilites and Emergency Services
2.4 Traffic and Transportation/Pedestrian and Bicycle Facilities
2.5 Visual/Aesthetics
2.6 Cultural Resources
2.7 Hydrology and Floodplain
2.8 Water Quality and Storm Water Runoff
2.9 Paleontology
2.10 Hazardous Waste/Materials
2.11 Air Quality
2.12 Noise
2.13 Natural Communities
2.14 Wetlands and Other Waters
2.15 Plant Species
2.16 Animal Species
2.17 Threatened and Endagered Species
2.18 Invasive Species
2.19 Cumulative Impacts
CHAPTER 3 - CEQA Evaluation
CHAPTER 4 - Comments and Coordination
CHAPTER 5 - List of Preparers
CHAPTER 6 - Distribution List

Appendix A - Section 4(f)
Appendix B - Title VI Policy Statement
Appendix C - Construction Emissions Model
Appendix D - List of Technical Reports
Appendix E - Avoidance, Minimization, and/or Mitigation Summary
Appendix F - FTIP/RTP Listings
Appendix G - FEMA/FIRM
Appendix H - Project Plans

Initial Site Assessment (July 2017)
Water Quality Assessment Report (January 2018)
Paleontological Identification Report and Paleontological Evaluation Report (April 2018)
Preliminary Geotechnical Assessment (December 2017)
Visual Impact Assessment (July 2017)
Visual Impact Assessment - Technical Report Addendum (April 2018)
Location Hydraulic Study & Floodplain Evaluation Report (May 2018)
Natural Environment Study (May 2018)
Biological Assessment (May 2018)

*These documents were used as reference material only and are not eligible for commenting as part of the public review process for this project.
*Please visit the following URL for reference material used:
*Project Components 3 and 4 were evaluated and adopted in the Laguna Canyon Road Improvement Project IS/MND adopted in February 2006. An Addendum was adopted and approved in June 2018.

Please submit your comments in writing no later than 5 pm, July, 10, 2018 to Edward Dolan, Associate Environmental Planner, California Department of Transportation, District 12, Division of Environmental Analysis, 1750 East 4th Street, Santa Ana, CA 92705; or via e-mail to:

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Contact Information

General Information:

Phone: (657) 328-6000
Fax: (657) 328-6511

Physical Address:

California Department of Transportation
District 12
1750 East 4th Street, Suite 100
Santa Ana CA 92705

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