State Route 20 Corridor Plan
State Route 20 Corridor Plan
The State Route (SR 20) Corridor Plan is a long-range transportation plan for the section of the SR 20 that runs through Colusa, Sutter, Yuba, and Nevada Counties. This plan identifies current and future transportation needs along the corridor, with the goal of evaluating safety, mobility, operational improvements, and access for all users - including drivers, bicyclists, pedestrian, and transit riders. It will also help guide future investments and position the corridor for potential funding opportunities. Public input is a critical part of this process to ensure the plan reflects the needs and priorities of the communities it serves.
Take Our Survey: Please take a few minutes to fill out a survey and share your experiences traveling on SR 20. Available from August 25, 2025 – September 30, 2025
What We Are Doing
Caltrans District 3 is developing the SR 20 Corridor Plan to improve how people travel along the route. This highway supports a wide range of travel – from daily commutes and local trips to commercial trucking, agricultural business, and recreational travel.
The SR 20 Corridor Plan is a long-term strategy that looks ahead to the year 2050. Caltrans is working closely with local and regional agencies to evaluate current conditions and future needs along the corridor. Together, we examine traffic flow, access to public transportation, bicycle and pedestrian facilities, and more. The goal is to create a transportation system that is efficient, sustainable, equitable, and supports healthy communities and a strong economy.
Why This Matters
The SR 20 Corridor Plan isn’t just a planning document – it is a roadmap for how this highway may better function for everyone. Whether you drive, bike, walk, ride transit, or move goods, this plan aims to enhance your day-to-day experience.
The plan will evaluate:
Roadways and intersections
Infrastructure needs for future growth and climate resilience
Connections to school, jobs, healthcare, and essential services
Opportunities to expand biking, walking, and transit options – not just driving
Study Area
This plan focuses on a 123-mile stretch of SR 20 that travels through Colusa, Sutter, Yuba, and Nevada Counties. This study area includes key communities such as City of Williams, City of Colusa, Yuba City, City of Marysville, City of Grass Valley, and Nevada City. This corridor plays a vital role in connecting residents and businesses, supporting regional mobility, economic growth, and access to recreational destinations.
Your Voice Matters!
Do you use SR 20 regularly, live near the corridor, or rely on it for commuting or business? Caltrans wants to hear from you! Your feedback will help us understand the needs of the people who use and live near the corridor. By taking this short survey, you will play a key role in shaping solutions that enhance mobility, minimize travel delays, and expand transportation options for everyone.
Take the survey today and help us build a better SR 20! Just click the blue “Continue” button on the bottom of this page or the "Survey" tab at the top of this page. You also have the opportunity to provide feedback on plan documents by visiting the "Project List" page.
Timeline
Partnerships
Caltrans District 3 is working closely with local and regional agencies throughout the development of SR 20 Corridor Plan:
- Colusa County
- City of Colusa
- City of Williams
- Sutter County
- Yuba City
- Yuba County
- City of Marysville
- Nevada County
- City of Grass Valley
- Nevada City
- Nevada County Transportation Commission
- Sacramento Area Council of Governments