APM: L0 Location: SR 173 and SR 138, San Bernardino Cty No reassurance shield as SR 173 begins. With the closure in the middle of this segment, this has been de-emphasized as a state highway. APM: L6 Location: SR 173 and Arrowhead Lake Rd, San Bernardino Cty A few miles later we’re a mile from SR … Continue reading California State Route 173, SR 138 to SR 189