Corrugated metal pipe culvert five applications in engineering: (l) in special geotechnical areas, such as Jinian permafrost, soil, clay, loess and other regions, reinforced concrete pipe culvert or because the foundation slab culvert or foundation settlement motivate the average settlement unfair culvert culvert damage caused by the application of the bellows is sufficient to solve the culvert culvert foundation variations due to the damage caused. (2) also solves the problem of local culvert damage goaf ground subsidence caused. (3) can be processed into arc line, arched, round tee duck eggs and other sub-sub-shaped structure, easy curve started. (4) The actual cost of the project than the same span of the bridge, arch culvert culvert and cover low. (5) The start time is short, civil engineering and installation profiles can be implemented separately and then assembled line groups. Is by far the best solution to repair and reinforce dilapidated roads and bridges and culverts to pick holes.