State Route 4 Bypass Authority
2009
Board of Directors:
| Robert Taylor, Chair | City of Brentwood |
| Mary N Piephe, Vice Chair | Contra Costa County |
| Brian Kalinowski | City of Antioch |
| Jim Frazier | City of Oakley |
Staff: Steve Kowalewski, Interim Program Manager
Nancy C. Wein, Senior Civil Engineer