A transport trailer includes a chassis, a deck, a lifting assembly, and a stabilizer assembly. The lifting assembly is mechanically coupled to the deck and the chassis and selectively raises and lowers the deck relative to the chassis. The stabilizer assembly includes a support post and a slide member. The support post is laterally disposed between first and second edges of the deck and extends from the chassis to a top end of the support post. The slide member is coupled to the deck and translates along a length of the support post as the deck is raised and lowered to stabilize the deck. An upper surface of the deck is above the top end of the support post when the deck is in a raised position and is below the top end of the support post when the deck is in a lowered position.