An underbody structure for a vehicle cargo bed is provided. The underbody structure includes a front cross member defining a forward end of the underbody structure, a rear cross member defining an opposite rearward end of the underbody structure, a first side member coupled between the front cross member and the rear cross member, and a second opposite side member coupled between the front cross member and the rear cross member. The underbody structure includes a center cross member coupled between the first and second side members, a first angled cross member oriented at a predetermined acute angle relative to the rear cross member, and a second angled cross member oriented at a predetermined acute angle relative to the rear cross member, where the first and second angled cross members are configured to match a load distribution of the vehicle cargo bed.