My apologies if someone has posted an answer previously but Ive been unable to find it. I was wondering if anyone has any sort of recent coverage map of CHP Golden Gate, more specifically Contra Costa and Oakland offices. I am wondering where CHP Oakland ends and Contra Costa begins. I would have thought the county line would seperate them (Albany border of I-80 @ Where El Cerrito ends). CHP Oakland's website says they service Albany, El Cerrito, and Richmond, both EC and Richmond being parts of Contra Costa county. I would appreciate any information.