APM: R34 Location: SR 58 and I-15, Barstow Reassurance shield as State Route 58 begins. SR 58 heads from here to San Luis Obispo as a very significant route to I-5 and a very insignificant route thereafter. APM: R33 Location: SR 58 and Main St, Barstow 25 miles to US 395. APM: R33 Location: SR … Continue reading California State Route 58, I-15 to US-395