Abstract: According to various embodiments of the present invention, a monopole reinforcement with an elongated base plate and a stiffening cross plate protruding substantially perpendicularly from the elongated base plate, the stiffening cross plate having an inner edge substantially flush with the outer surface of the elongated base plate and an outer edge whose distance from the elongated base plate varies along the length of the stiffening cross plate between a minimum protrusion height and a maximum protrusion height. According to some embodiments, the outer edge is shaped in a wave or sinusoidal pattern to maintain stiffness while decreasing material usage and wind drag, and reinforcement members formed from the base plate and cross plate are interconnectable with other such members for ease of installation.