Welcome to Caltrans District 4

System Planning Contacts

The System Planning Branches in the Office of System and Regional Planning 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
Kang Tang,
Senior Transportation Planner
Phone: 510-286 5472
Email: kang.tang@dot.ca.gov
System Planning East Bay/Santa Clara,
Alameda, Contra Costa, and Santa Clara Counties
Zhongping "John" Xu, AICP
Senior Transportation Planner
Phone: 510-286-5577
Email: zhongping.xu@dot.ca.gov

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

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