Abstract: A trailer hitch ramp assembly has a first ramp member secured to the trailer hitch and a second ramp member pivotally secured to the first. The second ramp member is foldable onto the first member to define a traveling position. When unfolded, the second ramp member can be positioned in an incline attitude along a side of the vehicle providing a ramp bridging the ground surface and the boat trailer so that a boater does not have to wade through water when launching a boat from a trailer. The ramp assembly includes a detachable wheel at the end of the second ramp assembly and a platform mounted to the boat trailer effective for supporting a human.