State Route 133/State Route 241 Permanent Restoration Project
3 Documents in Project
Summary
SCH Number
2025050142
Lead Agency
California Department of Transportation, District 12
(DOT)
Document Title
State Route 133/State Route 241 Permanent Restoration Project
Document Type
NOD - Notice of Determination
Received
Posted
6/26/2025
Document Description
The California Department of Transportation (Caltrans) District 12 initiated a major damage permanent restoration improvement and promoting resilient operations project to repair severely damaged Transportation assets caused by the 2020 Silverado Fire and to improve the resilience of other existing roadway assets considered to be within a fire hazard severity zone. The improvements will be in Orange County, California on State Route 133 (SR-133) from Post Mile (PM) 11.4 to PM 13.6, and on State Route 241(SR-241) from PM 24.5 to PM 35.7 in the cities of Irvine, Orange, and Orange County, Unincorporated. The proposed project build improvements would include improvements along SR-133 south of Irvine Boulevard (Blvd) Over Crossing (OC) to Junction (Jct) SR-241 and on SR-241 south of Portola Parkway (Pkwy) OC to NB off-ramp Toll Plaza. Two alternatives are being considered, The Build and No Build Alternative.
The proposed improvements of the build alternative include necessary repairs on the fire damaged guardrails, drainage facilities, roadway signs, and electrical systems. Moreover, the build alternative also aims to improve the existing infrastructure by making it more resilient to extreme weather and natural disasters. The project’s proactive approach includes drainage improvements, upgrade traffic safety devices, replacement of pavement sections impacted by the culvert replacement, landscaping replacement, electrolier replacement, and conductor loop replacement.
Contact Information
Name
Carmen Lo
Agency Name
Caltrans District 12
Job Title
Associate Environmental Planner
Contact Types
Lead/Public Agency / Project Applicant
Phone
Email
Location
Cities
Irvine, Orange
Counties
Orange
Regions
Southern California
Cross Streets
SR-241/133
State Highways
SR-133 and 241
Other Location Info
SR-133 0.5 mi south of Irvine Blvd to SR-241/133/ 0.4 mi south of Portola Pkwy to NB off-ramp to Toll Plz in Orange County
Notice of Determination
Approving Agency
Caltrans District 12
Approving Agency Role
Lead Agency
Approved On
County Clerk
Orange
Final Environmental Document Available at
https://dot.ca.gov/caltrans-near-me/district-12/district-12-programs/district-12-environmental/sr-133-sr-241-silverado-fire-restoration-project
Determinations
(1) The project will have a significant impact on the environment
No
(2a) An Environmental Impact Report was prepared for this project pursuant to the provisions of CEQA
No
(2b) A Mitigated or a Negative Declaration was prepared for this project pursuant to the provisions of CEQA
Yes
(2c) An other document type was prepared for this project pursuant to the provisions of CEQA
No
(3) Mitigated measures were made a condition of the approval of the project
Yes
(4) A mitigation reporting or monitoring plan was adopted for this project
Yes
(5) A Statement of Overriding Considerations was adopted for this project
No
(6) Findings were made pursuant to the provisions of CEQA
No
Attachments
Notice of Determination
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