AMP: Pacific Hwy West #91/43 Location: OR 99W and OR 233, Yamhill Cty As we head out of Amity, we’ll approach Oregon 233. AMP: 43 Location: OR 99W and OR 233, Yamhill Cty Follow 233 north to Dayton. Stay on 99W north for McMinnville. Portland emerges as a control city for the first time.  N to OR … Continue reading Oregon Route 99W, OR 153 to OR 233