9 9 39 in the area of the coupling elements 7 7 39 a cylindrical end stop 6 6 39 is passed through each elongated hole 9 9 39 the end stops 6 6 39 are mounted in the box girder 1 and in a clamp 11 11 39 fastened to the box girder 1 preferably in blind holes 13 13 39 in the box girder 1 and in holes 14 14 39 in the clamp 11 11 39 it is achieved as a result that no bending moments develop in the lower chord structure 5 due to the double shear connection and the wall of the hole in the connection structure is kept low the blind holes 13 13 39 have a larger diameter than the hole 14 14 39 in the clamp 11 11 39 the cylindrical stop 6 6 39 is mounted captively as a result an intended clearance between the box girder 1 and the clamps 11 11 39 which makes possible a free longitudinal movement of the rectangular beam tie 8 in the loaded state is recognizable to make possible a horizontal displacement of the coupling elements 7 7 39 which is equal to the elongation of the beam tie 8 the horizontal bolts 12 12 39 are arranged above the coupling elements 7 7 39 in the longitudinal direction of the beam tie 8 the bolts 12 stops 6 holes 13 and clamps 11 form a mounting means for creating a floating or sliding connection between the chord structure.