No outdoor advertising shall be erected or continued in use for the purpose of having its message read from the main traveled ways of Interstate 26 from State Route 1 in Sullivan County to State Route 67 in Washington County (formerly Interstate 181), except those portions within the boundaries of an incorporated municipality on March 3, 1994, Interstate 440 in Davidson County, Interstate 640 in Knox County, or the section of State Route 840 in Williamson County from State Route 246 to one (1) mile from the intersection with State Route 100. Failure to comply with this section shall render the outdoor advertising a nuisance constituting a Class C misdemeanor, subject to immediate disposal, removal, or destruction and subject to the punishment and remedies provided in § 54-21-105. Valid permits for outdoor advertising structures located along Interstate 640 in Knox County issued prior to May 13, 1982, shall remain valid after May 13, 1982, and the holders of the permits shall be permitted to construct, reconstruct, maintain or repair the structures according to the original application for which a permit was issued. Valid permits for outdoor advertising structures located along Interstate 26 from State Route 1 in Sullivan County to State Route 67 in Washington County (formerly Interstate 181), issued prior to March 3, 1994, shall remain valid after March 3, 1994, and the holders of the permits shall be permitted to construct, reconstruct, maintain or repair the structures according to the original application for which a permit was issued.