Okla. Stat. tit. 11, § 11-36-410: Laying out or widening across public property -

Declaration of necessity - Exceptions.

Whenever the municipal governing body deems it necessary for

public use and convenience to extend, open, widen, or lay out any

street or avenue over, upon or across any public property which is

wholly within the municipal limits and which is owned by the state,

county, school district, or board of education, the governing body

by ordinance shall declare the public necessity for the use of such

street. Public property which is actually covered by a public

building may be taken for the purposes named in this section upon

approval by the appropriate governing body or officer of the

governmental agency which has title to the building.