AMP: Salmon River Hwy #39/51 Location: OR 18 and OR 221, Yamhill Cty Reassurance shield after the 221 exit as we cross the mighty Yamhill. AMP: 51 Location: OR 18 and Kreder Rd, Yamhill Cty As we near Oregon 99W, turn left on Kreder Rd to access 99W south. AMP: 52 Location: OR 18 and OR 99W, Yamhill … Continue reading Oregon Route 18, OR 221 to OR 99W/OR 233