APM: 3 Location: SR 4 and SR 207, Alpine Cty No reassurance shield after SR 207. APM: 5 Location: SR 4 and Pack Trl, Alpine Cty SR 4 spends most of its time between here and SR 89 as a one lane road. APM: 7 Location: SR 4 and Pack Trl, Alpine Cty Though it does briefly widen … Continue reading California State Route 4, SR 207 to SR 89