Okla. Stat. tit. 69 § 1260
When the Commission determines that the topography of the land adjoining the highway will not permit adequate screening of such junkyards or scrap metal processing facilities or the screening of such junkyards or scrap metal processing facilities would not be economically feasible, the Commission shall have the authority to acquire, by gift, purchase, exchange or condemnation, such interest, either real or personal, as may be necessary to secure the relocation, removal or disposal of the junkyards or scrap metal processing facilities and to pay the costs of relocation, removal or disposal thereof. When the Commission determines that it is in the best interest of the state, it may acquire such real or personal property interest as may be necessary to provide adequate screening of such junkyards or scrap metal processing facilities.
Okla. Stat. tit. 69, § 1260