Hwy 4 Accident East Of Arnold Sponsored by: By Published Jun 24, 2009 12:15 pm Updated Jun 24, 2009 12:16 pm Hwy 4 View Photos San Andreas, CA — CAL Fire is reporting a single vehicle accident on Hwy 4 two miles east of Arnold. The eastbound lane is blocked. Emergency personnel have been summoned. The CHP is already on site. No other details are available at this time.