AMP: 0 Location: 20 Mile Rd and WYO 270, Lance Creek, Niobrara Cty Reassurance shield at the beginning of the route AMP: 2 Location: 20 Mile Rd and Carter Oil Rd, Niobrara Cty Turn left for CR 83 which is named after the locally important Carter Oil Company. The Lance Creek area seems to be … Continue reading Wyoming Highway 271, WYO 270 to Twenty Mile Rd/CR 23