Ariz. Rev. Stat. § 28-7009
A. The statewide transportation acceleration needs account is established as a separate account in the state highway fund. The account consists of all of the following, except that the source of monies in the fund shall not be a consent agreement or any type of negotiated settlement by any state or local agency or any donation made in place of a consent agreement or any type of settlement:
F. Monies in the statewide transportation acceleration needs account shall be used only to pay for the following costs of a transportation project approved pursuant to this section:
1. Except as provided in section 28-7010:
G. Monies in the statewide transportation acceleration needs account that are appropriated by the legislature and any interest earnings shall be allocated as follows:
K. A city, town or county may use monies that are in the statewide transportation acceleration needs account or any subaccount of the statewide transportation acceleration needs account, including monies that were previously approved by the board for a project and that were not specifically designated for interest costs for that project, for interest costs only if all of the following occur: