Abstract: A breakaway freestanding roadside structure in the form of a curbside brick mailbox is formed from a block of styrofoam, coated with successive layers of a mixture of stucco and lightweight aggregate filler, into a cutout of which a standard rural delivery mailbox fixture is placed. A wet outer coating layer is recessed down to a partially dug inner layer to simulate brickwork, the outer layer being shaped and colored to resemble the faces of brick, stone or other masonry elements and the inner layer being colored so that portions expressed by the recesses resemble intervening mortar joints. A mailbox flag is secured by an extended rod through the block to the interior of the mailbox. Modified embodiments take the form of planters, entranceways and fence posts.