A ramp bridging device having a bridge plate, the rear end of which is pivotably mounted to a ramp about a horizontal transverse shaft, and an extension for rest and support on a platform which is to be loaded or unloaded. The extension is located at the free end of the bridge plate, is movable in the longitudinal direction of the bridge, and can be extended and retracted. Below a continuous cover plate, the bridge plate is provided with longitudinal members which are parallel to one another. The edges of the bridge plate are preferably provided with vertical side plates. Furthermore, the extension is provided with a portion which extends approximately over the width of the bridge and is adapted to rest on the platform. The extension is also provided with longitudinal members which extend parallel to one another. The longitudinal members of the extension extend freely toward the back from the aforementioned portion of the extension, and are held and guided between the cover plate of the bridge plate and a transverse member. The ends of the transverse member are rigidly connected with the lateral edges of the bridge plate.
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