2009 “SAVE MT. DIABLO & DIRECTOR PUBLIC WORKS DEPARTMENT TRAFFIC COUNTS” By bikedanville | December 23, 2020 Posted in History Danger Zone and tagged Danger Zone ← 1924 “AUTO RACE TO DIABLO’S SUMMIT”2009 “SAVE MT. DIABLO REPAIR AND MAINTENANCE PROJECT” → About bikedanville View all posts by bikedanville →