A load path control mechanism is fixed to a frame rail and includes a coupling bracket, a spacer bracket and a frame crossmember. The frame rail defines an inner chamber therein. The frame crossmember is fixed to the frame rail. The coupling bracket is disposed in the inner chamber and is fixed to the frame rail, paralleling the frame crossmember. The coupling bracket has a first projected area on a plane normal to a lateral axis. The spacer bracket, disposed on an outboard side of the frame rail, has a second projected area on a plane normal to the lateral axis. The projected areas at least partially overlap. The spacer bracket has a deformation mode responsive to a first load under which the space bracket deflects against the first side of the frame rail which deflects against the coupling bracket.