(b) Obligations of the corporation may be sold at either public or private sale in such a manner and at such a price or prices and at such time or times as may be determined by the board of directors to be most advantageous. Notwithstanding the foregoing, none of the obligations may be sold for a price less than 97 percent of par or face value. Subject to the provisions and limitations contained in this chapter, the corporation may from time to time sell and issue refunding bonds for the purpose of refunding any matured or unmatured bonds of the corporation then outstanding. Approval by the Governor of Alabama of the terms and conditions under which any bonds of the corporation may be issued shall be requisite to their validity. The approval shall be entered on the minutes of the meetings of the board of directors at which the bonds are authorized, and shall be signed by the Governor. The approval by the Governor may be, but is not required to be, shown on any of the bonds by a facsimile of his or her signature printed or otherwise reproduced thereon when authorization thereof is contained in the approval signed by him or her. The corporation may pay out of the proceeds from the sale of its bonds all expenses, including fees of attorneys and other charges, which the board of directors may deem necessary and advantageous in connection with the issuance of the bonds. Bonds issued by the corporation shall not be general obligations of the corporation but shall be payable solely out of the funds appropriated and pledged therefor in Section 23-6-10. As security for the payment of the principal of and interest on any bonds issued by it, the corporation may pledge for payment of the principal and interest the funds that are appropriated and pledged in Section 23-6-10 hereof for payment of the principal and interest. The pledges made by the corporation shall take precedence in the order of the adoption of the resolution containing the pledges. All contracts made and all bonds issued by the corporation pursuant to this chapter shall be solely and exclusively obligations of the corporation and shall not be an obligation or debt of any kind of the State of Alabama. Bonds issued by the corporation shall be construed to have all the qualities and incidents of negotiable instruments subject to the registration provisions pertaining to transfers. All bonds issued by the corporation and the income therefrom shall be exempt from all taxation in the State of Alabama. Any bonds issued by the corporation may be used by the holder thereof as security for any funds belonging to the state or to any instrumentality or agency of the state in any instance where security for the deposits may be required by law. Unless otherwise directed by the court having jurisdiction thereof, or by the document that is the source of authority, a trustee, executor, administrator, guardian, or one acting in any other fiduciary capacity may, in addition to any other investment powers conferred by law and with the exercise of reasonable business prudence, invest trust and other fiduciary funds in bonds of the corporation. Neither a public hearing nor consent by the state Department of Finance or any other department or agency shall be a prerequisite to the issuance of bonds by the corporation. Notwithstanding subsection (b), the corporation shall issue no new bonds after the series 1995 bonds, dated August 1, 1995. After all of the available bond proceeds have been obligated for industrial access roads and bridges projects, future projects shall be funded from the revenues of the state Public Road and Bridge Fund of the State Department of Transportation. There is appropriated eleven million dollars ($11,000,000) annually for the construction of industrial access roads and bridges in the state from the state Public Road and Bridge Fund. The annual appropriation shall begin with the 1995-96 fiscal year. This appropriation shall be available to obligate for projects of the corporation, upon the approval of the State Department of Transportation and the Governor, but solely for the purpose of constructing, reconstructing, and relocating industrial access roads and bridges and work incidental and related thereto including the acquisition of property necessary therefor. Funds thus appropriated shall remain in the state Public Road and Bridge Fund and shall be paid out of the state Public Road and Bridge Fund by the State Department of Transportation for obligations by the corporation on industrial access roads and bridges projects.