AMP: 24 Location: SH-172 and US-160, La Plata Cty Reassurance shield as SH-172 begins. AMP: 21 Location: SH-172 and CR 222, La Plata Cty A few miles later, turn left for CR 222. AMP: 20 Location: SH-172 and CR 308, La Plata Cty Turn right for CR 308. AMP: 17 Location: SH-172 and CR 311, … Continue reading Colorado State Highway 172, US-160 to SH-151