Ключевые слова: abstraction, background, bangladesh, bangladesh bridge, beams, beautiful bridge, bolts, bridge, bridge support, buildings, connection, design, details, dirty river, elements, fasteners, frames, ganges river, ganges tributary, gray, harding bridge, heavy, interior, joints, long, metal, object, old, old bridge, outdoor, padma river, railway, railway bridge, river, rivers of bangladesh, rivets, road, sky, steel, steel rivets, steel trusses, structures, technology, traffic, transport, travel, wide river,