aerial overhead of the bridge pier table is constructed atop a footing in river

construction platform construction site barge pier construction frame built structure bridge construction material industry crane - construction machinery construction industry construction equipment industrial building mekong river low tide building river nautical vessel cambodia industrial equipment machine part engineering remote location aircraft point of view video drone cement transportation occupation transportation 4k asia concrete day mode of transport floating on water architectural column close-up stationary planning horizon over water flowing water flying outdoors carrying lifestyles