APM: SF/0 Location: Junipero Serra Blvd and I-280, San Francisco Just as SR 1 splits from I-280, we’ll enter San Francisco. APM: 0 Location: Junipero Serra Blvd and 19th Ave, San Francisco At 19th Avenue, SR 1 bears left to follow it. APM: 0 Location: Junipero Serra Blvd and 19th Ave, San Francisco SR 1 heads up to … Continue reading California State Route 1, I-280 to SR 35