Barrier element for bounding a carriageway, including a guide element extending about a longitudinal axis. The guide element transversely to the longitudinal axis has on the underside a foot part, which on the first end of the guide element has a base plate. The base plate has parts of a tenon and mortise connecting system as the first connector for connecting the barrier element to a second barrier element, provided with parts of a tenon and mortise system as the second connector, which interact with the first connector. The first end of the barrier element has a fixing member for accommodating a fixing element for fixing the barrier element relative to the carriageway.