Any sign or other advertising structure except portable and temporary signs legally in existence on 11-17-1993, shall be allowed to remain as a non-conforming sign and may continue its non-conforming use status unless:
(A) The sign is damaged by more than 50% of its total replacement value;
(B) The sign has been issued a temporary permit or there are conditional restraints;
(C) The sign is structurally altered to change it size, shape or height or location; and
(1998 Code, § 98-31) (Ord. 93-69, passed 11-17-1993)