route route east west miles miles state oregon highway starts rural interchange interstate located east city travels east continuation columbia river highway intersecting city form short concurrency city highways continuing northeast washington highway travels rural ends intersection south created original united_states highways november traveling existing columbia river highway established south washington section added state highway system branch state road later branch highway concurrent traveling moved new route bypassing allowing extended southwest later interchange route description runs miles oregon washington listed national_highway_system system roads crucial nation economy defense mobility western terminus east end concurrency state highway states roadway maintained highest designation united states numbered highway route shortest highway system highway defined revised code washington oregon begins partial cloverleaf interchange located east city highway continuation columbia river highway travels northeast rail line passes reaching city continues northeast 6th street city highway intersects diamond interchange forms short concurrency continues east unincorporated community northern terminus oregon route rural highway turns northeastward lake intersects providing connections north recreation area south city heads washington traveling rail line canyon walls columbia river gorge survey measuring traffic volume average day year expressed terms annual average daily traffic aadt conducted calculated busiest section highway oregon interchange serving vehicles busy section highway washington state line serving vehicles washington continues north oregon reaching county highway intersects spur route turns east eastern terminus south community year conducts series surveys highways state measure traffic volume expressed terms aadt calculated washington section served vehicles day history highway oregon designated easternmost segment columbia river highway november created initial named state highway system segment washington added state highway system branch state road kept designation branch creation primary secondary highway system adopted november officials included traveling northeast south extended south washington san_diego california concurrent eastern terminus south moved new section bypassing cities november subsequently extended west intersection moved south interchange westward extension idaho washington suggested route included entirety suggested routing vancouver washington approved extension washington june routing present terminus aligned concurrency crossing bridge having shorter concurrency old route spur route mile long spur route rural connects westbound directed eastbound city included road annual aadt survey calculated vehicles spur route major intersections
U.S. Route 730