rope tilikum crossing bridge across willamette river in portland

american architecture bicycle bike bridge bus cables city commercial communicate connect connection crossing curved cycle cyclists drive driving engineering hoist lane logistics modern movement moving northwest oregon outdoors paths pedestrian perspective portland railing rails reliable road roadside roadway rope run safety stainless steel straight streetcar stretching structure style support symbol tension tightening tilikum towers traffic tram tramcar transport transportation transporting travel trolley urban usa walking walkway way white