AMP: 8 Location: SR 387 and I-10, Pinal Cty Just after SR 187, we’ll approach I-10. Follow 10 west towards Phoenix, 10 east towards Tucson, and 387 south towards Casa Grande AMP: 8 Location: SR 387 and I-10, Pinal Cty Turn right for 10 west; stay straight for 10 east/387 south AMP: 8 Location: SR … Continue reading State Route 387, SR 187 to I-10