Ключевые слова: box, box culvert, cement, channel, concrete, construction, conveyance, culvert, discharge, drain, drainage, drains, duct, engineering, flow, gully, highway, inside, large, outdoor, outdoors, outlet, passage, pipe, precast, reinforced, road, roads, roadway, route, runoff, storm water, stormwater, stream, structure, surface, transportation, tube, tunnel, under, water, waterway,