The Railroad Maintenance Fund heretofore created is hereby continued and shall be administered by the division. Expenditures are authorized from collections but are to be made only in accordance with appropriation by the Legislature and in accordance with the provisions of 12-3-1 et seq. of this code and upon fulfillment of the provisions of 11B-2-1 et seq. of this code. Any balance remaining in the special revenue account at the end of any state fiscal year does not revert to the General Revenue Fund but remains in the special revenue account and shall be used solely in a manner consistent with the state rail portions of this article. All costs and expenses incurred pursuant to this article for state rail, including administrative, shall be paid from those funds. The division may expend, out of any funds available for the purpose, such moneys as are necessary for the study of any proposed railroad project and may use its engineering and other forces, including consulting engineers for the purpose of effecting such study. All such expenses incurred by such study and engineering shall be paid from the Railroad Maintenance Fund.