APM: 20 Location: SR 89 and SR 49, Sierra Cty Reassurance shield as 89 splits from 49. APM: 23 Location: SR 89 and Calpine Rd, Sierra Cty A few miles later we’ll approach CR A23, which heads towards Portola. APM: 23 Location: SR 89 and Calpine Rd, Sierra Cty Reassurance shield after Calpine Rd. APM: 27 Location: SR 89 … Continue reading California State Route 89, SR 49 to SR 70