Culvert Wikipedia. Culverts can be constructed of a variety of materials including cast-in-place or precast concrete (reinforced or non-reinforced), galvanized steel, aluminum, or plastic (typically high-density polyethylene). Two or more materials may be combined to form composite structures. For example, open. مشاهدة المزيد

الويب  Culvert is defined as a tunnel structure constructed under roadways or railways to provide cross drainage or to take electrical or other cables from.