Humboldt 101 Drainage North

Caltrans proposes to rehabilitate approximately 51 drainage systems at various locations on U.S. Highway 101 in Humboldt County from north of the Rio Dell area to the Del Norte County line. Additional traffic management upgrades are also planned.

Project Description

The project’s identified drainage systems need repairs, replacement or capacity enhancements. The work is needed to repair failed and deteriorated drainage systems to prevent potential roadway damage resulting from drainage system failures. Traffic-management upgrades include electrical upgrades and improves changeable message signs.


Construction is anticipated to begin in the summer of 2025 and end in early 2028.

Traffic Impacts

Traffic impacts will be minimal. Lane closures will be required at several locations with 5-minute delays due to one-way traffic control.


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Contact Information

Project Email

Project Manager

David Melendrez

(707) 572-0831, TTY 711

Environmental Coordinator

Stephen Umbertis

(707) 382-2889, TTY 711

Public Information (media inquiries)

Myles Cochrane

(707) 498-4272, TTY 711

Last reviewed: April 2023

Drainage along US 101 at Post Mile 97.13 in Humboldt County.

Public Meeting

A virtual public meeting was held April 17, 2023, to share project details and receive public input. Please click the thumbnail below to view a recording of the presentation.