AMP: 0 Location: 3500 S and 8400 W, Magna No reassurance shield as SR-171 begins. AMP: 3 Location: 3500 S and 5600 W, West Valley City A few miles later, we’ll approach SR-172, which is not signed at the junction at all aside from blade signage. Turn right for 172 south and left for 172 … Continue reading Utah State Route 171, SR-111 to SR-172