Carlotta Shoulder Widening Project

Carlotta Shoulder Widening Project proposes safety improvements on Route 36 between Hill Lane near Hydesville and Wilson Lane in Carlotta (postmiles 3.9 to 6.0). These upgrades include six-foot minimum shoulders, rumble strips, guardrail upgrades, culvert replacements, a westbound passing lane extension at Ward Creek, a new bridge with a curve improvement at Ward Creek, a new maintenance turnout, and a curve improvement near Monroe Lane.

The draft environmental document, an Initial Study with Mitigated Negative Declaration (IS/MND), was circulated for public comment in September 2022.

Environmental studies and preliminary design are scheduled to be completed in April 2023, and construction is scheduled for summer 2024.


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For more information, contact:

Public Information (media and general inquiries)
Myles Cochrane

Last reviewed: May 2023

Artistic renderings of the shoulder widening project:

An artistic rendering of a shoulder widening project on State Route 36 near Carlotta California. The drawing shows a two-lane road veering to the left with a small wall running across a bridge that crosses a small creek filled with blue water.


An artistic rendering of an upcoming shoulder widening and bridge removal project on State Route 36 near Carlotta in Humboldt County. The aerial view shows a two-lane road with visible shoulder and a small railing wall along a bridge that crosses a creek. Trees line the roadway and creekbed.

Highway 36 shield. Carlotta Shoulder Widening.

Public Meeting

Caltrans hosted an in-person and virtual “hybrid” public meeting on Sept. 28, 2022, to share information about the Carlotta Shoulder Widening Project and answer questions from community residents. Click the thumbnail below to view the presentation.