AMP: Warrenton-Astoria Hwy #105/7 Location: US-101 Business and Olney Ave, Astoria No reassurance shield after the turn, as we cross Youngs River along a long raising causeway. AMP: 5 Location: US-101 Bus and Youngs River Rd, Clatsop Cty After we get across the causeway, keep right to stay on 101 Business. AMP: 5 Location: US-101 Bus and Youngs … Continue reading U.S. Route 101 Business, OR 202 to US-101