AMP: Pacific Hwy West #91/79 Location: OR 99W and Granger Ave, Lewisburg, Benton Cty A few miles past Corvallis, we’ll enter unincorporated Lewisburg. AMP: 75 Location: OR 99W and Vandenburg Ave, Adair Village Shortly thereafter, we’ll enter Adair Village. AMP: 64 Location: OR 99W and Gwinn St, Polk Cty A few miles later, as we enter Monmouth, we’ll … Continue reading Oregon Route 99W, US-20 to OR 51/OR 194