Planning and Environmental Linkages (PEL)
The Future of State Route 37: Problems + Solutions
The future of the State Route (SR) 37 corridor demands finding solutions to chronic traffic congestion and periodic flooding. It also requires balancing transportation needs with protecting and enhancing sensitive marshland habitats. Planning a long-term solution presents an opportunity to provide bicycle, pedestrian, transit, and carpool options for all travelers. Caltrans is conducting a comprehensive, long-range Planning and Environmental Linkages (PEL) Study to identify the best solutions to address the diverse needs of this complex corridor.
September 2022 Update
Caltrans held a virtual public meeting via Zoom on September 14, 2022, to share an update on the development of the PEL Study.
Learn more about the PEL study and share input for the SR 37 corridor.
- Learn about the PEL Study process.
- Review the flyover simulation of Alignments 1-7 simulations.
- Take a Virtual Tour of the SR 37 corridor.
- View past public meetings.
- January 25, 2022 Public Meeting.
- Watch the May 26, 2021 Public Meeting.
- View the April 15, 2021 Town Hall Meeting presentation slides (PDF).
- Review previous studies, assessments, and reference documents.
Reach out for more information.
- Submit your comments and ideas on the interactive corridor map or via email.
- Sign up for email updates.
- Follow the project on Facebook and Twitter.
- Call the Highway 37 Public Information Line: (510) 286-1204.
One Corridor, One Team
Caltrans, the Metropolitan Transportation Commission (MTC), and the transportation authorities for Marin, Sonoma, Napa, and Solano counties are working together on the PEL Study to identify and narrow the range of alternatives to be advanced for environmental review and construction. We are integrating previous studies and assessments conducted for the corridor while we continue to work to identify long term solutions. These studies are integrated to deliver a roadway that will serve both long-term transportation needs and the environment. Learn more about collaborative efforts for the SR 37 corridor by visiting Resilient 37 – Sonoma County Transportation Authority (ca.gov).
Corridor Overview of Linkages
- US 101 (Novato) in Marin County to SR 121 (Sears Point) in Sonoma County: 4-Lane Expressway
- Click here for a virtual tour of the US 101 to SR 121 (Sears Point)