An installation for producing construction elements, comprising: - a device for loading and unloading molding assemblies for the production of construction elements in and from a plurality of loading locations, each molding assembly comprising a mold and a pestle, the loading and unloading device comprising: - a movable gantry intended to be displaced along a displacement path, - a chassis mounted on the gantry, - support means (15, 16) arranged to support a molding assembly, the support means being mounted in fixed position relative to the chassis, and - first driving means (17, 27, 28) arranged to drive a molding assembly in horizontal translation relative to the support means (15, 16) between a transport position wherein said molding element is supported by the support means (15, 16) and a loading position wherein said molding element is disposed in a loading location, - a storage station comprising a plurality of storage housings each arranged to store a molding assembly, - a vibrating press, and - an intermediate storage station disposed proximate to the vibrating press and comprising at least two storage housings each arranged to store a molding assembly, the loading and unloading device being arranged to load and unload a molding assembly in and from each storage housing of the intermediate storage station, characterized in that the plurality of loading locations includes the storage housings of the storage station and of the intermediate storage station and a location provided in the vibrating press so that the loading and unloading device is arranged to load and unload molding assemblies in and from the storage station, in and from the intermediate storage station and in and from the vibrating press. - a device for loading and unloading molding assemblies for the production of construction elements in and from a plurality of loading locations, each molding assembly comprising a mold and a pestle, the loading and unloading device comprising: - a movable gantry intended to be displaced along a displacement path, - a chassis mounted on the gantry, - support means (15, 16) arranged to support a molding assembly, the support means being mounted in fixed position relative to the chassis, and - first driving means (17, 27, 28) arranged to drive a molding assembly in horizontal translation relative to the support means (15, 16) between a transport position wherein said molding element is supported by the support means (15, 16) and a loading position wherein said molding element is disposed in a loading location, - a movable gantry intended to be displaced along a displacement path, - a chassis mounted on the gantry, - support means (15, 16) arranged to support a molding assembly, the support means being mounted in fixed position relative to the chassis, and - first driving means (17, 27, 28) arranged to drive a molding assembly in horizontal translation relative to the support means (15, 16) between a transport position wherein said molding element is supported by the support means (15, 16) and a loading position wherein said molding element is disposed in a loading location, - a storage station comprising a plurality of storage housings each arranged to store a molding assembly, - a vibrating press, and - an intermediate storage station disposed proximate to the vibrating press and comprising at least two storage housings each arranged to store a molding assembly, the loading and unloading device being arranged to load and unload a molding assembly in and from each storage housing of the intermediate storage station,