AMP: 386 Location: SR 77 and US-180, Holbrook Reassurance shield after the 180 split. We’re on the Hashville Pony Express Route, which is well signed through Arizona AMP: 386 Location: SR 77 and SR 377, Holbrook Just after that, we’ll approach 377. We’re still officially in Holbrook for some reason. AMP: 386 Location: SR 77 … Continue reading State Route 77, US-180 to SR 377