To provide a culvert type block which has sufficient strength even when a wheel load or the like is loaded from the above and is usable as an efficient water conduit or passage enabling a person to enter and work inside a hole when removing sediment such as sludge accumulated inside the hole and foreign matters hooked inside the hole or performing a periodic inspection or the like, the culvert type block which is easy to mold, and its division block and a truck for movement inside the block.

An upper surface 2a of a block body 2 having a hole 3 along a longitudinal direction in the inside has a prescribed thickness from an upper part of the hole 3. A cross-sectional shape of the hole 3 is turned to a modified shape for which respective corner parts of a roughly bilaterally symmetrical and roughly triangle shape are respectively contracted inwards to form an outward convex curved or bent shape, a peak part 3c is formed into a roughly chevron shape, respective side parts of the roughly triangle shape are respectively swollen outwards to form the outward convex curved or bent shape and both side parts 3b and a bottom side part 3a are formed. Inside the hole 3, at least a person can enter in a crawling posture.