The flag of Des Moines, Iowa was adopted by the city in 1975. Designed by Walter T. Protctor, the red, white, and blue of the flag are the same shades used by the flag of the United States of America. The three bridges represent the Grand, Locust, and Walnut bridges that span the Des Moines river, connecting the east and west sides of the city. The red stripe makes up a third of the flag with the white bridges on their blue background making up the remainder.
Humphrys' Des Moines flag is appliqued nylon, 3x5', finished with canvas heading tape and brass grommets.