A. No sign or supporting structure may be located in or over the roadway of any public rights-of-way unless the sign is attached to a structural element of a building and a permissive use permit has been obtained from the city. Signs projecting over public rights-of-way shall be at least ten feet from the ground or sidewalk unless attached to a projecting canopy. Signs attached to the underside of a projecting canopy shall not be closer than eight feet to the ground or sidewalk.

B. No part of any freestanding sign may exceed a height of twenty-five (25) feet measured from ground level.