Information

Project Description: 

What Is A Corridor Management Plan?

The United States Route 101 (US 101) Corridor Management Plan serves as a guide for long range planning of route improvements. It protects the State’s investment in US 101, while recognizing financial and environmental limits on state resources.

The goals of the CMP include safety, mobility, and stewardship to the community and the environment. This is accomplished through highway, transit, pedestrian, bicycle, freight, and operational improvements. The long-range vision for US 101 emphasizes mobility and the development of a layered network, reflecting its role as a principal arterial roadway.

 

Planning Area

US 101 is nearly the length of the West Coast of the Continental United States. It begins at the junction with I-5 in Los Angeles and travels 1,540 miles through California, Oregon and Washington before ending at I-5 in Olympia, Washington. Within District 1, US 101 travels north from Sonoma County (Caltrans District 4) through Mendocino, Humboldt, and Del Norte Counties before crossing into Oregon. In Caltrans District 1, US 101 spans 285 miles in total.

 

Del Norte County Segments

Del Norte County Segments

Humboldt County (North) Segments

Humboldt County (North) Segments

Humboldt County (South) Segments
Humboldt County (South) Segments
 
Mendocino County (North) Segments
Mendocino County (North) Segments
 
Mendocino County (South) Segments
Mendocino County (South) Segments

Project Timeline

complete
complete

Draft Plan Development

  • Project Scoping (June - July 2025)
  • Data Collection & Analysis (July - December 2025)
  • Narrative Development (August 2025 - March 2026)
    • Concept Development (November 2025 -February 2026)
    • Baseline Performance Assessment (November 2025 - March 2026)
  • Internal Staff Consultation (April - May 2026)

live
live

Draft Plan Engagement

  • Draft Plan Public Review Period (June - July 2026) - The public will have the opportunity to read and provide feedback to the plan.
  • Eureka Open House Meeting (June 16, 2026)
  • Ukiah Open House Meeting (July 15, 2026)

planned
planned

Final Plan

Final Plan Publication, October 2026