AMP: 171 Location: Ajo Way and I-19, Tucson Reassurance shield missing shield at the beginning of SR 86 AMP: 169 Location: Ajo Way and La Cholla Blvd, Tucson We’ll get out of Tucson really quickly after the I-19 exit. Two miles later, and here we are with our first reassurance shield AMP: 153 Location: SR … Continue reading State Route 86, I-19 to SR 286