APM: 17 Location: SR 20 and SR 49, Nevada City Immediately after the turn, the SR 20/49 freeway begins. APM: 17 Location: SR 20 and Coyote St, Nevada City Reassurance shield after the Coyote Street onramp. APM: 16 Location: SR 20 and Boulder St, Nevada City Reassurance shield after the downtown Nevada City exit. APM: 15 Location: SR 20 … Continue reading California State Route 49, SR 20 to SR 174