Last Driven June 2017 AMP: Pacific Hwy. West #91/84 Location: Pacific Hwy and OR 34, Corvallis Reassurance shield after the Oregon 34 split as US-20 traffic merges on. f AMP: 83 Location: Pacific Hwy and B Ave, Corvallis At the signal, turn left to loop around to US-20/Oregon 34 east and Oregon 99W south. AMP: 83 Location: Pacific … Continue reading U.S. Route 20, OR 34/OR 99W to OR 99W