AMP: Adrian-Arena Valley Hwy #453/0 Location: OR 453 and OR 454, Malheur Cty No reassurance shield as Oregon 453 begins. 453 is unsigned. AMP: 1 Location: OR 453 and Primrose Rd, Malheur Cty A mile into 453, we’ll turn right to head south. AMP: 2 Location: Primrose Rd and OR 454, Malheur Cty A bit over a mile … Continue reading Oregon Route 453, OR 454 to OR 454