Establishes procedures for the valuation of an outdoor advertising sign (sign) that cannot be elevated or relocated to a conforming location within the market area due to a change along the interstate and primary system or any other highway. Requires the Indiana department of transportation to provide written notice to the representative of a sign owner that a project has been planned that may impact the sign at least 12 months prior to the filing of an eminent domain action for the sign. Provides that an owner is entitled to full and just compensation for the taking of a sign in the amount of the fair market value of the interests associated with the sign. In Marion County, allows the: (1) board of directors (board) of an agricultural fair society, association, or corporation; or (2) the county legislative body; that owns or operates a county fairgrounds to place one digital billboard at a location on the county fairgrounds selected by the board.