A walkway structure includes a first frame spaced apart from the ground in a vertical direction and extending in a first horizontal direction, a footboard located on a side surface of the first frame and comprising at least one first hole, at least one bracket coupled to the footboard and the first frame, and a first coupler configured to couple the bracket to the first frame, wherein the bracket includes a first plate coupled to the footboard, a second plate coupled to the first plate, and a third plate coupled to the second plate, wherein a lower surface of the third plate is in contact with an upper surface of the first frame.