APM: 13 Location: SR 20 and Bennett St, Grass Valley Reassurance shield at the 174 exit. APM: 13 Location: SR 20 and Idaho-Maryland Rd, Grass Valley Reassurance shield after the Idaho-Maryland Rd exit. APM: 15 Location: SR 20 and Brunswick Rd, Grass Valley Reassurance shield as we head out of Grass Valley. APM: 16 Location: SR 20 and Broad … Continue reading California State Route 20, SR 174 to SR 49