I know a guy who would sell you an used one. Possibly 2009 and up, different makes. Steel wheels, east coast trailers, they are all shortened to ~51ft, for easier dock unloading when hauling a container.
2014 Doonan Platinum 53 with locks to the back. 2-20’s or 1-40’. 17.5 tires w/ 4 aluminum, rear three position slider, aluminum deck with three nailers. J hook rail on the outsides. Good shape and I’ll throw new brakes on it for you. It was put in service December 2014.