Okla. Stat. tit. 69, § 69-620: Unexpended funds - Transfer to other road projects

Whenever there remains in the State Treasury to the credit of

the Commission, in the account of any county in this state, an

unexpended balance of any special fund, being an amount in excess of

the contract price of any federal aid road or bridge project and the

purpose for which it was created has been fully observed, and there

remains no further use for such balance, the Commission shall make a

certificate to the board of county commissioners of the county

showing the amount of the balance, and it shall then be lawful for

the board of county commissioners, by resolution, to transfer such

balance to any other federal aid road or bridge project of the

county.