To provide a blocking bar having a simple structure and capable of being easily manufactured and preventing the occurrence of damage to a vehicle at the time of a collision with the vehicle.

The blocking bar 15 for crossing gates is constituted of both of a cylindrical body 18 made of a synthetic resin sheet and face materials 19A and 19B made of a synthetic resin sheet pasted to opening end parts 18a and 18b of the body 18. A plurality of slits 23 are formed as diameter-enlargement allowing parts in the edges of the opening end parts 18a and 18b of the body 18 along the axial direction of the body 18.