Abstract: A fall arrest system with flow-through intermediate supports which allow the travel of one or more load-connecting devices along a length of horizontal lifeline cable supported by intermediate supports. The load-connecting device having an upper cable contacting portion of greater outside diameter than the narrow opening at the bottom of the intermediate supports. In the event of a fall, the load-connecting device pulls the cable downward while the cable remains within the inner portion of said intermediate supports. Outward tension of the cable in maintained by a tension control device while the chock to the load is absorbed by said tension control device located between the cable and one of the cable-end anchors.