Washington | Interstate Highways | U.S. Routes | State Routes 3-99 | State Routes 100-292 | State Routes 300-971 | Erroneous Signage | This starts at US-101 and moves counter-clockwise around the state. Oregon State Line: (Astoria, OR) US-101 crosses into Oregon on the Astoria-Megler Bridge. There’s no signage on the bridge but once we get over we get a signpost at the immediate US-30 junction in Astoria. … Continue reading State Line Crossings