Abstract: A ramp assembly for spanning between a first lower surface and a second relatively elevated upper surface defined by a structure having at least two elongated runners in telescoping relation relative to each other. The ramp assembly includes at least two elongated runners, preferably formed of a light weight structural plastic or aluminum, and an angular support member integral with each end of each runner for engaging the upper surface and lower surface of a platform. Thus, upon extension and placement of the ramp assembly in an inclined orientation relative to such platforms, each end thereof forms a secure and slip resistant attachment to such platform. The assembly can also include an additional runner disposed intermediate between each of the two runners. In this latter assembly configuration, each of two end runners are similarly configured, relative to said intermediate runner, to engage and support the intermediate runner, both in the compact and extended configuration.