Iowa Code § 315.8: Accounts and records required.

The department shall keep accounts in relation to the allocation of moneys to the fund including all amounts credited to the fund and all amounts of duly and finally approved vouchers for claims chargeable to the fund. The department shall also keep accounts in relation to agreements with counties and cities for the reimbursement of interest and principal costs for general obligation bonds of counties or cities issued for the purpose of financing road or street projects under this chapter.