APM: 6 Location: SR 121 and SR 116, Sonoma Cty No reassurance shield after the turn as we head east towards Napa. APM: 7 Location: SR 121 and SR 12, Sonoma Cty Very shortly thereafter we’ll approach SR 12. APM: 7 Location: SR 121 and SR 12, Sonoma Cty Trucks are advised to avoid SR 12 west up … Continue reading California State Route 121, SR 116 to SR 12