California State Route 39 (San Gabriel Canyon Road) Reopening Project

The California State Route 39 (San Gabriel Canyon Road) Reopening Project, managed by Caltrans District 7 in Los Angeles, involves the restoration and reopening of a specific segment of SR 39 from post mile 40.0 to 44.4 in Los Angeles County. The primary objective of this effort is to establish a viable evacuation route and provide essential access for Caltrans, the United States Forest Service, and emergency response personnel. This project is classified under NAICS code 237310 for highway and street construction. The project has undergone an environmental review process in accordance with the California Environmental Quality Act, resulting in an Environmental Impact Report and a Notice of Determination filed by the California Transportation Commission on October 16-17, 2025. This determination confirms that the project will not have a significant environmental effect, provided that the adopted mitigation measures and monitoring plans are implemented. Administrative oversight is led by Karl Price, the Senior Environmental Scientist, and the project is tracked under State Clearinghouse Number 2022120019.