4 adjectives to describe culverts

The whole of the line to Deir Sineid was not in running order, but broken culverts were given minor repairs, attention was bestowed on trucks, and the engines were closely examined while the Turks were shelling the station.

The masonry is of the most substantial kind, granite viaducts and arch culverts.

Once, when we bumped over a shaky culvert and a bushel or two of coal-dust fell from the rusty tender, the engineer stopped the train and his assistant went back with a shovel and piece of sacking to gather up the precious stuff.

Defects in roads, to which mishaps may be fairly attributed, are only those unlooked for conditions which make trouble for all other vehicles, such as wash-outs, pit-holes, weak culverts, broken bridges,in short, conditions which require repairs to restore the road to normal condition.

4 adjectives to describe  culverts