The 185 meter long self-propelled barge Marcona with a convoy of barges allided with a bridge on the Rhine River at Bonn, Germany. The Marcona became disabled when some flotsam became wedged in the port-side propeller causing the vessel to swing into a pillar of the bridge. The wires between the barges snapped and the barges broke free. The crew of the Marcona dropped anchor and the barges were taken along side. The bridge suffered minor damage that does not require immediate repairs. No reports of injuries or pollution being released. The Marcona was allowed to continue its voyage later.