APM: 0 Location: SR 175 and US 101, Mendocino Cty As the highway begins and we head out of Hopland we’re advised that trucks are disallowed in five miles. APM: 1 Location: SR 175 and Old River Rd, Mendocino Cty Less than a mile later we’ll approach a roundabout with SR 175. APM: 1 Location: SR 175 and … Continue reading California State Route 175, US-101 to SR 29/SR 29 Bus