route route north south miles miles state oregon highway starts rural intersection travels north continuation cities highway concurrent intersects interstate crosses bridge washington highway continues neighboring city terminates junction state route established existing created initial named oregon highways traveled current northern terminus primary state highway successors original state road designated corridor section transferred recognized transportation officials route description runs miles oregon washington maintained oregon begins intersection unincorporated located cities madras central oregon highway continuation travels northwest foot high criterion summit community criterion crosses rail line warren bridge avenue passes city highway continues west intersects designated highway forms concurrency travel north northwest leaves concurrency heads east bridge highway lone highway continues north passing foot high travels east entering city highway begins mile long concurrency traveling north east west rail line diamond interchange leaves interchange state oregon crossing washington survey measuring traffic volume average day year expressed terms annual average daily traffic aadt conducted calculated busiest section highway oregon serving vehicles busiest section highway north terminus serving vehicles washington enters washington steel bridge crosses downstream travels mile long highway continues north past columbia northern terminus intersection defined revised code washington year conducts series surveys highways state measure traffic volume expressed terms aadt calculated washington section served vehicles history washington added state highway system state road later designated traveling east vancouver oregon designated segment created initial named state highway system adopted november highway traveled south california state line south united_states numbered highway system approved officials november state road washington signed vancouver oregon signed california state line created numbered state highway system compliment route system junction numbered renumbered oregon section established traveled north newly constructed northeast traveled east highways end concurrency removed route system leaving concurrent successor state highway renumbering concurrency removed washington state highway system remained defined transportation officials september major intersections
U.S. Route 197