Butte City Bridge Project

The Butte City Bridge Project, managed by Caltrans District 3, involves the replacement of the existing Howe Through Truss steel and concrete bridge and its connecting viaduct on State Route 162 between post miles 73.6 and 78.6 in the City of Princeton, Glenn County. The scope of work includes pile driving, replacing guardrails, contouring roadway slopes for new shoulders and a realigned driveway, constructing temporary work platforms, and demolishing existing wooden fenders. This forecast project is categorized under NAICS code 237310 for highway, street, and bridge construction. Environmental compliance is a critical component of the project, as it impacts 2.762 acres of habitat for the threatened Central Valley spring-run and endangered Sacramento winter-run Chinook salmon. To address these impacts, the project operates under California Endangered Species Act Incidental Take Permit No. 2081(b)-2026-002-02 and adheres to a Mitigated Negative Declaration. The California Department of Fish and Wildlife has issued a Notice of Determination confirming that the project will not have a significant environmental effect within its jurisdiction, provided that the adopted mitigation measures and monitoring plans are implemented.