AMP: Salmon River Hwy #39/26 Location: OR 18 and OR 22, Polk Cty Reassurance shield as 22 joins 18. AMP: 26 Location: OR 18 and OR 22, Polk Cty Another reassurance shield less than a mile later. AMP: 23 Location: OR 18 and Rowell Creek Rd, Polk Cty Reassurance shield as we cross the Yamhill. AMP: 23 Location: OR … Continue reading Oregon Route 22, OR 18/OR 18 Bus to OR 18