A torsional vibration damper for a bridging clutch of a hydrodynamic clutch arrangement has a drive-side damping device, which can be brought into working connection with the housing of the clutch arrangement and is provided with a drive-side transmission element, which acts via a drive-side energy-storage group on an intermediate transmission element, and a takeoff-side damping device, which uses a takeoff-side group of energy-storage devices to establish a working connection between the intermediate transmission element and a takeoff-side transmission element, which is connected to a takeoff-side component of the hydrodynamic clutch arrangement. A predetermined stiffness ratio is obtained between the energy-storage devices of a first group and the energy-storage devices of a second group, and the energy-storage devices of the drive-side group have a stiffness different from that of the assigned energy-storage devices of the takeoff-side group.