Okla. Stat. tit. 60, § 60-810: Powers of state over highways, streets, bridges, etc. not

extended so as to cause violations.

The powers granted under this act shall in no way extend the

power of state and local authorities having jurisdiction over

highways, roads, streets, alleys, bridges or rights-of-way to the

point that (a) federal regulations pertaining to federal aid rights-

of-way are violated, (b) constitutional limits on the power of such

authorities are exceeded, or (c) the right of the public to full and

unobstructed use of highways, roads, streets, alleys, bridges and

rights-of-way is impaired.