Abstract: A device for assembling and laying track support bridge sections displaceable at right angles to their longitudinal axis, with launching support structures, which are arranged between the track supports and are likewise transversely displaceable, into a bridge support structure. The device includes a base frame with a plurality of telescoping props, base frame being built up on a vehicle. A laying arm is provided pivotable around a horizontal axis at one end of the base frame. A front arm is provided pivotable around a horizontal axis at another end of the base frame. Both the laying arm and the front arm are adjustable by hydraulic cylinders. A displacing device is provided for pushing the bridge sections apart and together. The displacement device includes track support and launching support sections arranged between the front arm and the laying arm on the base frame in a transverse direction in relation to the base frame.

Abstract: A take-apart drive-over bridge with cantilevers between the drive-overs. The two sections of drive-over (4) associated with each section of the bridge constitute, along with the section of cantilever (5) between them, a transport unit and are simultaneously secured to the corresponding drive-over and cantilever sections of the adjacent bridge section by the bridge-laying system, which consists essentially of a vehicle (1), a latticework outrigger (2), a main boom (3.1), and an auxiliary boom (3.2), while the bridge is being assembled. The two sections of drive-over associated with each bridge section and the section of cantilever, which is in two halves, slide together for transport and apart for assembly.The two drive-overs and the cantilever have U-shaped latticework structural sections with uprights (11 or 16) and horizontals (12 or 19) at the top.The horizontals (19) and beams (15) are removable.