route highway iowa ran way designated signed primary highways route began missouri river southwest ran north turned northeast route ended miles west route changed little service paved end end summer january removed highway system replaced extended southward replaced extended westward route description began bridge represents border missouri iowa routes ran concurrently half mile mississippi_river reached routes turned northeast turned away river highway curved north passed unincorporated towns southwest split northeast run banks mississippi split continued northeast main street met iowa highway iowa north highway diverted away northwestern railroad highway closely paralleled railway highway headed north passed small communities enter west west_point iowa served iowa highway northern shortly entered iowa short spur highway connected salem primary highway system road headed north east slightly cross iowa north briefly overlapped iowa near olds primary highways iowa near iowa near riverside highway entered iowa city area south iowa joined southwest routes briefly headed north banks joined routes crossed river split away routes near blocks north campus iowa split away east blocks north southern end iowa highway crossed headed northwest iowa continued northwest turning north iowa river crossing passed entered entered area southwest iowa highways headed northeast crossed entering downtown east downtown split away east near intersection iowa iowa continued northeast met iowa near downtown outside iowa southwest routes met northern end iowa closer crossed iowa split away east heading northeast traversed farmland met ends iowa iowa crossed south fork river headed cascade crossed north fork river cascade met ends iowa iowa highway continued northeast past route ended intersection miles west history original rest system designated signed summer replaced parts primary roads eastern iowa primary road known primary road parts known northernmost miles territorial military road road authorized president known named merchant surveyed route marked designation small portion paved located short section remainder route north paved million bond bill billion dollars passed approved allowed paving commence earnest entire routing completed years paving work progressed faster counties hard surfaced road existed missouri state line olds iowa city northeast cascade miles route paved june january removed replaced previously ended south extended eastward southward replaced previously existed wisconsin routed westward madison iowa major intersections
U.S. Route 161