State Route 36, Humboldt County

Construction Updates

Full road closures are in effect Monday through Thursday, 8:00 a.m. through 12:00 p.m., and from 1:00 p.m. through 5:00 p.m., and on Fridays from 8:00 a.m. through 12:00 p.m, and from 1:00 p.m. through 3:00 p.m.

Additional delays up to 30 minutes can be expected on Mondays from 5:00 p.m. through 6:00 p.m., on Tuesdays through Thursdays from 6:00 a.m. through 8:00 a.m., and on Fridays from 6:00 a.m. through 8:00 a.m.

For additional live information please visit the Caltrans Travel Alert website or call 1-800-427-7623.

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.

Key Project Dates

Release of Environmental Assessment: July 2014
Environmental Decision Document (FONSI): September 2014
Advertise: Spring 2017
Construction: Summer 2020

Project Photos

Existing Road

Existing Road.

Existing Road

Existing Road.

Environmental Documents

View a larger interactive map of the project area.

Project Details
Project # CA FLAP SR36(13)
Project Name State Route 36 Humboldt County
Location Humboldt County
FLMA Six Rivers National Forest
Status Under Construction

Contact Information

Project Manager: Bob Bowden
Phone: 720-963-3595

Road Status: 1-800-427-7623

Federal Highway Administration
Central Federal Lands Highway Division
12300 West Dakota Avenue
Lakewood, CO 80228