APM: 0 Location: 42nd Ave and I-80, Oakland Reassurance shield as California’s shortest state highway begins. APM: 0 Location: 42nd Ave and 12th St, Oakland Reassurance shield at the 12th St interchange. APM: 0 Location: 42nd Ave and 14th St, Oakland Two blocks later, we’ll approach SR 185 and the end of the route. Turn right for 185 … Continue reading California State Route 77, I-880 to SR 185