Abstract: A detachable truck bed extension and loading ramp for use with trucks having a truck bed employed in carrying heavy construction machinery or the like is provided. The loading ramp is securely attached to the rear edge of the truck bed and, when in a transporting position, two triangular lower sections thereof are folded over and upon two triangular upper sections, thereby providing a convenient truck bed extension. A base plate, which also serves as the truck bed extension and which in the transportation position, rests upon four base pieces of the lower sections. The lower sections are connected by hinges to the upper sections. The upper sections are securely mounted by means of bolts and weight bearing grooves to the back of the truck in such fashion that the top ends of the ramp panels are flush with the edge of the truck bed.