Transportation Supply Depot is a full line semi trailer dealership. With locations to service your need in Dayton and Columbus, Ohio. We are authorized distributors for Stoughton vans, Fontaine flatbeds, and Fontaine Specialized lowboys. Along with our new trailers, we stock a complete line of used equipment as well. Our parts department carries a complete line of parts for most trailer makes including Wabash, Fruehauf, Stoughton, and Trailmobile. Our seven bay shop is equipped to handle all of your service needs in a timely professional manner.. Trailers