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State Route 36, Humboldt County

Project Description

The California Department of Transportation (Caltrans) and the Federal Highway Administration, Central Federal Lands Highway Division (FHWA -CFLHD), in cooperation with the U.S. Forest Service, Six Rivers National Forest, are improving California State Route 36 (SR 36) in southeastern Humboldt County approximately 12.3 miles east of the community of Bridgeville (Humboldt County mile post 36.0 to 40.4). Improvements include realigning and widening SR 36 to attain two, 12-foot wide travel lanes with 4-foot wide paved shoulders. In addition, new signing, pavement markings, guardrail, and wetland restoration are included in the project. CFLHD is the lead agency for compliance with the National Environmental Policy Act (NEPA) and Caltrans is the lead agency for compliance with the California Environmental Quality Act (CEQA).

For up-to-date information on closures go to the Caltrans Travel Alert website.


The purpose of this project is to enhance traffic safety while improving mobility for vehicular travel along California State Route (SR) 36 in a cost effective manner. The goal of enhancing traffic safety is aimed at reducing the likelihood and severity of a vehicular crash. The mobility component of the project purpose seeks to improve the efficiency of non-Surface Transportation Assistant Act (non-STAA) vehicular movement of people and goods on SR 36.


The project is needed to improve the narrow roadway which currently has no shoulder or centerline stripe, numerous tight curves, steep grades, limited sight distance, inconsistences with adjacent segments of SR 36, geologic hazards, and safety issues. These conditions limit connectivity between US Highway 101 and Interstate-5 in the north coast area, the viability of SR 36 for efficient transport of goods and services, slower travel speeds, and limited passing opportunities.

Anticipated Timeline

Construction: Summer 2020 - Winter 2021

Project Photos