To provide a deck panel having the capability of reducing the amount of a lattice material to be used, maintaining a large jointed area, ensuring high workability for a welding work and welding compactness, and further ensuring high workability and the compactness of an installed state at the time of erection on a steel frame or reinforced concrete as a material to form a girder.

A single lattice material 5 is jointed to the upper and lower reinforcements 3 and 4 of many deck girders 2 jointed to a deck plate, so as to be staggered and bent right and left. As a result, the amount of a lattice material to be used is reduced. In addition, the area of contact with the reinforcements 3 and 4 can be kept large, thereby improving workability for welding and the compactness of a welded state. At the same time, vertically fixed reinforcements 6 are jointed to the lateral ends of the reinforcements 3 and 4. Thus, workability and the compactness of a installed state can be improved at the time of erecting a deck panel on a steel frame or reinforced concrete to form a girder.