day cab powerful big rig white semi truck with empty step down semi trailer driving on the silver truss bridge across columbia

american big bridge business cab cargo carrier carries carry chassis climb columbia commercial dangerous day delivering delivery diesel down driving eco efficient eighteenwheeler engine equipment fifth fleet freight gorge haul haulage hauler heavyduty highway industrial loads local logistic logistics long lorry northwest profile protection pulling rig rigs road route running safety semi semitruck shipping silver step tractor traffic trailer trailers transport transportation transporter transporting travel trees truck trucking trucks trusses wheel wheels white