Upon completing a trip with the RV mentioned, an inspection was completed of the units suspension system where it was found to be compromised. Not knowing what compromised the suspension (leaf springs, shackles, hangars, etc), further investigation was done where the underbelly of the camper was removed. Upon gaining access to the actual RV frame, it was found to have at least two major cross members completely broken off the I-beam that runs from the front to back of the camper. Not only were there two cross members where the welds had completely broken free, but there were other metal bracings between cross members and to the I-beams that have also completely broken off. With the welds completely broken, there is no support between the two I-beams on this camper leading to major safety concern not only to those towing the fifth wheel but other motorist around the unit while on the highway. No accident has occurred but instead the frame has completely failed, including multiple cross members, other structural steel bracing and even multiple outriggers compromised due to the movement of the main 12′ I-beams. This is a MAJOR safety concern that Lippert (frame manufacturer) nor Jayco (RV brand) is taking any responsibility for but should be addressed as other units sitting on similar frames could be facing the same issues due to the low quality welds and bracing.