SR-133 Roadway and TMS Improvements Project
Summary
SCH Number
2025121210
Public Agency
California Department of Transportation, District 12
(DOT)
Document Title
SR-133 Roadway and TMS Improvements Project
Document Type
NOE - Notice of Exemption
Received
Posted
12/30/2025
Document Description
The California Department of Transportation (Caltrans) District 12 initiated a multi-asset project to address deficiencies along the State Route 133 (SR-133) corridor between Lake Forest Drive (Dr) at Post Mile (PM) R7.5 and the Junction (JCT) with Route 241 at PM 13.6. The project will be in Orange County, California, in the City of Irvine and Unincorporated Orange County. Two alternatives are being considered, The Build and No Build Alternative.
The proposed improvements of the build alternative include safety device improvements, accessibility improvements for pedestrians, lighting and Traffic management system upgrades, signing and striping, and stormwater treatment facilities. The build alternative also proposes minor improvements at the interchanges of Route 133 and Interstate 5 and State Route 241.
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
Counties
Orange
Regions
Southern California
Cross Streets
State Route 133 (SR-133) corridor between Lake Forest Drive (Dr) at Post Mile (PM) R7.5 and the
Notice of Exemption
Exempt Status
Categorical Exemption
Type, Section or Code
Cal. Code Regs. tit. 14 § 15301 - Existing Facilities
Reasons for Exemption
Class 1 consists of the operation, repair, maintenance, permitting, leasing, licensing, or minor alteration of existing public or private structures, facilities, mechanical equipment, or topographical features, involving negligible or no expansion of existing or former use. The types of "existing facilities" itemized below are not intended to be all-inclusive of the types of projects which might fall within Class 1. The key consideration is whether the project involves negligible or no expansion of use.
(c) Existing highways and streets, sidewalks, gutters, bicycle and pedestrian trails, and similar facilities (this includes road grading for the purpose of public safety, and other alterations such as the addition of bicycle facilities, including but not limited to bicycle parking, bicycle-share facilities and bicycle lanes, transit improvements such as bus lanes, pedestrian crossings, street trees, and other similar alterations that do not create additional automobile lanes).
County Clerk
Orange