HUM 254 Culvert Rehab Project

Project Description 

Caltrans aims to rehabilitate 45 existing drainage systems along Route 254, or Avenue of the Giants, from south of Phillipsville to south of Pepperwood. The existing drainage systems are rated as being in poor or critical condition and in need of repair. The project will prevent possible roadway damage, reduce sediment loads to the South Fork Eel River, and remediate fish passage barriers. Project features include new culverts, new drainage inlets, armored culvert outlets, and new bridges that will remove barriers to fish passage at Mowry Creek and Chadd Creek.


At this time, Caltrans expects to begin construction by 2027.

Estimated Traffic Impacts

Lane closures will be required at several locations with 5-minute delays due to one-way traffic control. Bicyclists will be accommodated. A full road closure is proposed at Chadd Creek for bridge construction, which will require using U.S. 101 as a detour.


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Contact Information

Project Manager
Lianna Winkler-Prins
(707) 798-7737

Environmental Coordinator
Morgan Kipf
(707) 492-0167

Public Information (media inquiries)
Myles Cochrane
(707) 498-4272, TTY711 

Last reviewed: April 2024

Public Meetings

A public meeting was held in December 2022 to share information and answer questions about the project. Click on the thumbnail below to view a recording of the presentation.

One of the existing culverts on State Route 254. A small creek runs into the far side under the roadway then out the near side.

One of the existing culverts on State Route 254. A crack is visible in the near side.

One of the existing culverts on State Route 254. The culvert is misshapen and damaged throughout. A worker shines a flashlight on a heavily damaged section of the culvert.

Photos of existing culverts on State Route 254.