AMP: Pacific Hwy W #91/1 Location: Pacific Highway W and Ross Island Br, Portland Oregon 10 begins here, as US-26 exits, connecting to OR 43. This was once the northern terminus of OR 99W, but is not any longer. AMP: 3 Location: Barbur Blvd and Capitol Hwy, Portland A mile later, OR 10 will split from the … Continue reading Oregon Route 10, US-26 to OR 210