Northern end of Highway 101 - PhotoThe Astoria-Megler Bridge crossing the Columbia River City of Astoria, Oregon. North access to Washington - Oregon State line. For continuance of highway travel north, via U.S. Highway #101 - See Milebymile.com - Road Map Highway Travel Guide - Washington U.S. #101 Pacific Coast Scenic Byway - Oregon State Line to city of Aberdeen for driving directions. Oregon State Highway 101 A beautiful drive along Oregon's rugged coast line with magnificent views and gorgeous wave swept beaches.