Caltrans Bay Area (District 4) manages nearly 1,400 miles of State Highway corridors throughout the Bay Area. The goal of this Study is to understand where Bike Highways may be installed alongside State Highway corridors.

The Study builds off of the recommendations included in the 2018 Caltrans District 4 Bike Plan and the 2017 California State Bicycle and Pedestrian Plan, Toward an Active California.

What is a Bike Highway?

A bike highway is a high-quality, uninterrupted, long-distance bikeway that reduces barriers to destinations that people want to travel to and from, especially places which may normally be difficult to bike to. Bike highways may consist of a mix of on-street facilities and fully-separated trails and should be designed so as to accommodate people of all ages and abilities riding bikes, as well as people walking and rolling where appropriate and feasible. For this Study, Caltrans is evaluating bike highways parallel to State highway corridors.

Tell Us What You Think

Your comments and feedback are key to this project’s success. There are multiple ways to get involved:

[Survey icon] [Survey icon]

Take the Online Survey

What are YOUR priorities for a Caltrans Bay Area Bike Highway? The survey will be open through February 28.

[Survey icon] [Survey icon]

Attend an Event

We’ll be hosting virtual events for the time being, and would love to see you at an upcoming community event!

Photo: Sergio Ruiz


What Makes a Good Bike Highway?
Where Should Bike Highways Go?
Where Can Bike Highways Go?
What Should Bike Highways Look Like?
How Can Bike Highways be Implemented?

Working Group Meeting

Working Group Meeting

Working Group Meeting

Working Group Meeting
Community Survey
Community feedback on priority corridors
Outreach to communities living near proposed corridors
Public Draft Study
Working Group Meetings
Fall 2020, Winter 2020-2021, Spring 2021, Summer 2021

Community Survey
Winter 2020 – 2021
Community feedback on priority corridors
Spring 2021
Outreach to communities living near proposed corridors
Summer 2021
Public Draft Study
Winter 2021 – 2022


Join us at the following events to share your thoughts on Bay Area Bike Highways. We’ll be hosting virtual events for the foreseeable future due to the COVID-19 pandemic.

Upcoming Events

Events coming soon!

Past Events

No events here yet!


Explore the following resources to learn more about this project and bicycle highways:

California State Bicycle and Pedestrian Plan (2017)
Caltrans Bay Area
Caltrans D4 Bike Plan (2018)
Download pdf
European Cycle Highway Manual

Working Group Organizations

This is a collaborative process! The following organizations are supporting the Study as members of a Working Group providing feedback throughout the duration of the project:

  • Alameda County Transportation Commission
  • Bay Trail Project
  • Bike East Bay
  • City/County Association of Governments of San Mateo County
  • Contra Costa Transportation Authority
  • Marin County Bicycle Coalition
  • Metropolitan Transportation Commission/Association of Bay Area Governments
  • Napa County Bicycle Coalition
  • Napa Valley Transportation Authority
  • Rails-to-Trails Conservancy
  • San Francisco Bicycle Coalition
  • San Francisco County Transportation Authority
  • Santa Clara Valley Transportation Authority
  • Silicon Valley Bicycle Coalition
  • Solano Transportation Authority
  • Sonoma County Bicycle Coalition
  • Sonoma County Transportation Authority
  • Transportation Authority of Marin

Join the Mailing List

Thank you for visiting the Caltrans Bay Area Bike Highway Study website. If you would like to ask a question, provide comments, or join our mailing list for upcoming events, please fill out the form below or call 510-221-0260 for more information.


  • This field is for validation purposes and should be left unchanged.

Photo: Sergio Ruiz