Abstract: A lid system for a front load dumpster is provided. The lid system provides a container assembly, an upper frame assembly having a curved lid, and a lower frame assembly, wherein the container assembly may rotate relative to the lower frame assembly and the upper frame assembly in a forward direction and an opposing rearward direction, while the upper frame assembly may rotate relative to the lower frame assembly only in the rearward direction so that the curved lid opens during dumping when the container assembly is in an upended condition, but the upper frame assembly and its curved lid may remain locked in a closed configuration when the container assembly is in an upright condition, before and after the dumping.