Okla. Stat. tit. 69, § 69-1279: Compensation for signs and rights taken

The Department is directed to acquire by purchase, gift or

condemnation, and shall pay just compensation upon the removal of,

the outdoor advertising signs, displays and devices specified in

subsections (a), (b) and (c) of this section, when and insofar as

their removal is required hereunder, as follows:

(a) Those lawfully in existence on the effective date of this

act.

(b) Those lawfully adjacent to any highway made a part of the

interstate or primary system on or after the effective date of this

act.

(c) Those lawfully erected, which later become unlawful.

(d) Such compensation shall be paid as follows;

(1) For the taking from the owner thereof the outdoor

advertising device.

(2) To the owner of the land on which the outdoor

advertising device is located for the right to erect and maintain

outdoor advertising thereon.