AMP: Corvallis-Newport Hwy #33/39 Location: US-20 and Eddyville-Blodgett Hwy, Benton Cty No reassurance shield after OR 180. AMP: 44 Location: US-20 and OR 223, Benton Cty A couple miles later, we’ll approach OR 223. AMP: 44 Location: US-20 and OR 223, Benton Cty Turn left for 223 north to Kings Valley. Stay on US-20 for Philomath and Corvallis. … Continue reading U.S. Route 20, OR 180 to OR 223