AMP: 189 Location: SR 347 and I-10, Maricopa Cty No reassurance shield at the beginning of the route, but SR 347 is a divided highway all the way to Maricopa AMP: 185 Location: SR 347 and Riggs Rd, Maricopa Cty A couple miles later, we’ll approach Riggs Rd, for which you can turn left to … Continue reading State Route 347, I-10 to SR 238