55 ILCS 5/6-28004
All moneys received from the issuance of bonds as herein authorized or from any tax levied pursuant to the authority granted by this Division, shall be set apart in the county highway working cash fund by the county treasurer and shall be used for the purposes and in the manner hereinafter provided. Such fund, and the moneys therein, shall not be regarded as current assets available for appropriation and shall not be appropriated by the county board in the resolution termed the annual appropriations bill. The county board may appropriate moneys in the working cash fund up to the maximum amount allowable in the fund, and the working cash fund may receive such appropriations and any other contributions. In order to provide moneys with which to meet ordinary and necessary disbursements for salaries and other highway purposes, such fund and the moneys therein may be transferred, in whole or in part, to the county highway fund of the county and so disbursed therefrom in anticipation of the collection of any taxes lawfully levied for county highway purposes or in the anticipation of such taxes, as by law now or hereafter enacted or amended, imposed by the General Assembly of the State of Illinois to replace revenue lost by units of local government and school districts as a result of the abolition of ad valorem personal property taxes, pursuant to Article IX, Section 5(c) of the Constitution of the State of Illinois. Moneys transferred to the county highway fund from the county highway working cash fund in anticipation of the collection of taxes shall be deemed to have been transferred in anticipation of the collection of that part of the county highway taxes so levied or to be received which is in excess of the amount or amounts thereof required to pay (a) any tax anticipation warrants and the interest thereon, theretofore or thereafter issued and (b) any notes and the interest thereon, theretofore or thereafter issued against the county highway tax and (c) the aggregate amount of receipts from taxes imposed to replace revenue lost by units of local government and school districts as a result of the abolition of ad valorem personal property taxes, pursuant to Article IX, Section 5(c) of the Constitution of the State of Illinois, which the corporate authorities estimate will be set aside for the payment of the proportionate amount of debt service and pension or retirement obligations, as required by Section 12 of "An Act in relation to State Revenue Sharing with local government entities", approved July 31, 1969, as amended. Such taxes levied or to be received for county highway purposes when collected shall be applied, first to the payment of any such warrants and the interest thereon and to the payment of any such notes and the interest thereon, the amount estimated to be required to satisfy debt service and pension or retirement obligations as set forth in Section 12 of "An Act in relation to State revenue sharing with local government entities", approved July 31, 1969, as amended, and then to the reimbursement of said county highway working cash fund as hereinafter provided. Upon the receipt by said county treasurer of any taxes, or other moneys, in anticipation of the collection or receipt whereof moneys of such county highway working cash fund have been so transferred for disbursement, such fund shall immediately be reimbursed therefrom until the full amount so transferred has been retransferred to such fund. Unless the taxes and other moneys so received and applied to the reimbursement of the county highway working cash fund, prior to the first day of the seventh month following the month in which due and unpaid real property taxes by law begin to bear interest, shall be sufficient to effect a complete reimbursement of such fund for any moneys transferred therefrom in anticipation of the collection or receipt of such taxes, or other moneys, such county highway working cash fund shall be reimbursed for the amount of the deficiency therein from any other revenues accruing to said county highway fund, and it shall be the duty of the county board to make provision for the immediate reimbursement of the amount of any such deficiency in its next resolution termed the annual appropriations bill.
55 ILCS 5/6-28004