Abstract: A thin plate structure such as a deck structure for, for instance, a footbridge comprises at least two abutting and substantially horizontally arranged profiled girders. Each girder comprises at least two substantially vertical plate-shaped side members. The girders are interconnected two by two by means of a plurality of connection fittings in these side members. These connection fittings are formed by locking lifting and comprising at least one downwardly pointing locking tongue cut out in one of the side members of each girder. Along a preferably horizontally extending bent bending area the locking tongue is bent in an offset manner outwards. The locking tongue co-operates with a locking tongue opening punched out opposite the locking tongue in the abutting side member of the adjacent girder as well as with at least one upwardly pointing locking gill punched out of one of the side members in each girder.