AMP: 0 Location: Salt Creek Hwy and Yellowstone Hwy, Mills Reassurance shield at the beginning of Salt Creek Hwy/WYO 254, which connects Mills to Bar Nunn along old US-87 AMP: 1 Location: Salt Creek Hwy and MJB Rd, Natrona Cty As we momentarily pass into unincorporated Natrona County, we’ll come to a junction with CR … Continue reading Wyoming Highway 254, US-20 Bus/US-26 Bus to US-20/US-26