Bi-County Transportation Study



Download PDF copies of the final report and its appendices:


Led by the San Francisco County Transportation Authority in partnership with several agencies from both sides of the San Francisco/San Mateo county line, the Bi-County Transportation Study aims to evaluate potential transportation improvements needed to address significant current and anticipated land use growth on both sides of the border. The magnitude and timeframe of developments, the existing transportation and land use patterns and needs, and the involvement of multiple jurisdictions call for cooperative, multi-agency planning.

Study Objectives

The Bi-County Study Team will engage stakeholders and governmental bodies to collectively assess transportation impacts and needs in the project area. The objectives of the Study are to:

  • Identify a multimodal package of transportation improvements that addresses regional and local needs;
  • Develop cost estimates for the top-priority major infrastructure projects, needed transit services, and local circulation and access projects; and
  • Establish a funding and implementation strategy that considers appropriate levels of contributions from public and private sources as well as a coordinated leveraging strategy to capture discretionary funds.

The Bi-County Transportation Study will serve as a vehicle for regional discussion and coordination as large transportation and development projects move forward. The Study will also provide policy guidance for ensuring that existing communities are well connected to improved transit services, new neighborhoods, and developing economic centers.

Potential Project List

View a detailed list of the proposed transportation improvements and a map of proposed transportation and land development projects (PDF, 11.7 MB).

Study Products and Schedule


Existing Conditions and Needs. Assessment of current land uses and transportation infrastructure, including deficiencies and anticipated investment needs.

Completed. See Existing Conditions and Needs Assessment report

Public Outreach. Engagement with key stakeholders and community groups.

Ongoing. See summaries of two previous community outreach meetings: 11/05/08 meeting (PDF) and 12/10/08 meeting (PDF)

Goals and Objectives. Guiding principles for planning and design of transportation and land use projects in the area to ensure compatibility with community goals.

Completed. See Bi-County goals and objectives.

Land Use Scenarios. Future land use alternatives for the mid- and long-term, including transit-oriented development.

Partially completed. See 2030 growth assumptions in key development area.

Project Cost Estimates. Cost estimates for proposed transportation projects and strategies.

December 2009.

Transportation Project Evaluation. Analysis and evaluation of potential transportation strategies and development of a Priority Project List of high-performing infrastructure projects.

January 2010.

Financial & Implementation Plan and Final Report. Funding plan, including fair-share contributions, and implementation roles, steps, and issues.

February 2010.

Study Partners

  • San Francisco County Transportation Authority
  • City/County Association of Governments of San Mateo County
  • San Francisco Mayor's Office of Economic & Workforce Development
  • City of Brisbane
  • City of Daly City
  • San Francisco Planning Department
  • San Francisco Redevelopment Agency
  • San Francisco Municipal Transportation Agency (Muni and Department of Parking & Traffic)
  • San Francisco Department of Public Works
  • San Mateo County Transportation Authority
  • San Mateo County Transit District (SamTrans)
  • Peninsula Corridor Joint Powers Authority (Caltrain)
  • California Department of Transportation (Caltrans)

For More Information

For more information, contact the Transportation Authority at or call 415.522.4800.