AMP: 118 Location: I-8 and Butterfield Tr, Maricopa Cty Reassurance shield after the I-8 Business split AMP: 117 Location: I-8 and SR 85, Maricopa Cty 2 miles to junction SR 85, which heads north to Phoenix and south to Ajo AMP: 116 Location: I-8 and SR 85, Maricopa Cty 1 mile to junction SR 85 … Continue reading Interstate 8, I-8 Bus to SR 85