APM: 45 Location: US 101 and Avenue of the Giants, Humboldt Cty Reassurance shield after the northern SR 254 interchange. APM: 43 Location: US 101 and Barkdull Rd, Humboldt Cty Reassurance shield after Barkdull Rd. APM: 39 Location: US 101 and Avenue of the Giants, Humboldt Cty A couple miles later, we’ll approach SR 254 again. Exit for … Continue reading U.S. Route 101, SR 254 to SR 254