APM: 15
Location: SR 138 and I-15, San Bernardino Cty
No reassurance shield after I-15.
APM: 19
Location: SR 138 and Summit Post Office Rd, San Bernardino Cty
Metric! mileage sign a few miles later.
APM: 23
Location: SR 138 and SR 173, San Bernardino Cty
A few miles later we’ll approach SR 173 without advance signage. Follow 173 east towards Hesperia via local roads. 173 itself is not actually open to motor vehicles beyond postmile 7.
