Abstract: The present invention relates to a multi-layer laminate structure. The multi-layer laminate structure includes a foam core element and a fiber-reinforced plastic matrix. The foam core element includes at least an outermost portion that is formed from a closed cell expanded foam, wherein the closed cell expanded foam is expanded polyethylene-polystyrene copolymer foam. The outermost portion of the foam core element is constructed from a material that is not attacked or degraded by the material used in the fiber-reinforced plastic matrix. The fiber-reinforced plastic matrix is formed over the outermost portion of the core element.

Abstract: The present invention includes a structure formed on an earthen surface. The structure includes an abutment, a bridge, a plurality of foam blocks, and a pavement structure. The abutment is constructed on the earthen surface. The abutment and the earthen surface define a cavity. The bridge is placed on the abutment. The plurality of blocks are stacked and connected together in the cavity to a desired height. A pavement structure is then formed on the foam blocks. The foam blocks support and retain the pavement structure at a height that is approximately the same as a height of the bridge.