Abstract: A ramp lifter device is provided which is adapted to elevate the end of a loading ramp from its initial, extended position to the floor height of a trailer. A trailer chassis provides a storage area for the loading ramp between longitudinal frame members. A ramp carrier box is secured between opposing frame members of the trailer chassis. The ramp includes a ramp carriage having extension rods that are slidingly received along the ramp carrier box. The ramp lifter device includes a reinforcement member attached to a bottom cross member towards one end of the ramp, and a handle. Selectively applying a downward force on the handle forces a pivot rod on the ramp lifter device against the ramp carriage extension rods, which pivots the reinforcement member upwardly, and hence elevates the end of the ramp to the level of the trailer floor. The loading ramp can be manually moved forward and lowered so that ramp hooks on the end of the ramp engage corresponding ramp pockets on the end of the trailer body.