Abstract: A self-sustaining multi-collapsible loading ramp has a pair of left and right wing units which each has a leg panel and a deck panel. The two deck panels have a folding connection between their inboard edges so the deck panels can fold between folded-up in parallel adjacent planes to folded out in a common plane. Each same-side leg and deck panel has a folding connection between their inner longitudinal edges so that they can fold between folded-up in parallel adjacent planes to folded out in an inverted-V shape. Each same-side leg and deck panel being provided with a strut so that the ramp as a whole in the fully-folded out state has a symmetric to asymmetric A-frame construction so that a transfer load can traverse across the ramp's deck panels reversibly between a high ground and a low ground.