Okla. Stat. tit. 69, § 69-702: Entry upon premises to make surveys and examinations for

establishment or relocation of highways - Notice.

The Department, through its authorized agents and employees, may

enter upon any lands, waters, and premises in the state for the

purpose of making surveys, soundings and drillings, and examinations

as may be determined necessary or convenient for the purpose of

establishing, locating, relocating, constructing, and maintaining

state highways or relocations thereof and facilities necessary and

incidental thereto. Such entry shall not be deemed a trespass, nor

shall an entry for such purpose be deemed an entry under any

condemnation proceedings which may be then pending; but notice shall

be given to the owner of or person residing on the premises,

personally or by registered mail, at least ten (10) days prior to

such entry.