A structural reinforcement comprising a rigid polymeric structure (12) including a central portion (20) and two side portions (22,24) adjacent the central portion, each of the central portion and side portions including a top surface and bottom surface and an expandable adhesive material (14) located onto at least one surface of each of the central portions and two side portions, wherein the expandable adhesive material is located along the bottom surface of the central portion and the top surface of each of the side portions.