steel guard rail with vertical pickets and posts along highway. blue sky with white clouds. thick concrete slab

steel guard rail vertical pickets posts highway blue sky white clouds heavy duty concrete slab road surface low angle view rusty cast sleeves connection uard guardrail barrier metal balustrade roadway railing crash galvanized freeway abstract architecture background fall protection drive cloud cloudscape construction asphalt bright design industrial motorway outdoor safety protective roadside structure side solid street summer transportation thick highway clouds surface view connection