Welcome to Caltrans District 4

System Planning Contacts

Office of System Planning Branches develop and coordinate long-range planning documents and studies, and provide support for congestion management agencies in the nine counties of the San Francisco Bay Area.

For more information please contact:

System Planning North Bay/Peninsula,
Napa, Sonoma, Marin, Solano, San Francisco, and San Mateo Counties
Senior Transportation Planner
System Planning East Bay/Santa Clara,
Alameda, Contra Costa, and Santa Clara Counties
Cameron Oakes
Senior Transportation Planner
Phone: 510-622-5758
Email: cameron_oakes@dot.ca.gov

Stephen H. Yokoi, System and Regional Planning Office Chief
Phone: 510-286-5621
Email: stephen_yokoi@dot.ca.gov

Xenia Rivas, Office Assistant
Phone: 510-286-6177
Email: xenia_rivas@dot.ca.gov