Abstract: A highway divider including a plurality of housing-like steel divider members which are releasably connected to each other in longitudinal direction. Each divider member has two side walls arranged in a mirror-inverted configuration. Each side wall includes a lower longitudinal strip member, a center longitudinal strip member and an upper longitudinal strip member which are connected to each other through concave portions so as to prevent buckling. Transverse wall members which are I-shaped in cross-section and have bottom surfaces are welded to the side walls on the vertical level of the lower longitudinal strip members and of the lower concave portions. In addition, horizontally extending stiffening plates can be welded between the side walls on the vertical level of the upper sides of the transverse wall members and the vertically middle portion of the center longitudinal strip members. Two successive divider members are connected through shaped pieces, connecting plates and threaded bolts.