For the purpose of paying the cost of all or any part of the improvement and reconstruction work and the construction of any additional bridge, approaches thereto, and connecting highways, the department is hereby authorized by resolution to issue its revenue bonds which shall constitute obligations only of the department and shall be payable from any funds available except revenue from the general fund, including but not limited to the revenues and income from the operation of the bridge or bridges constituting the project as may be provided in and by such resolution. Each such revenue bond shall contain a recital that payment or redemption of the bond and payment of the interest thereon is secured by a direct charge and lien upon the tolls and revenues pledged for that purpose and that such bond does not constitute an indebtedness of the state of Washington. Such revenue bonds may bear such date or dates, may mature at such time or times as the department shall determine, may bear interest at such rate or rates, may be in such denomination or denominations, may be in such form, either coupon or registered, may carry such registration and conversion privileges, may be made subject to such terms of redemption with or without premium, and may contain such other terms and covenants not inconsistent with this chapter as may be provided in such resolution. Notwithstanding the form or tenor of the bond, and in the absence of an express recital on its face that the bond is nonnegotiable, each such revenue bond shall at all times be and shall be treated as a negotiable instrument for all purposes. All such bonds shall be signed by the state treasurer and countersigned by the governor, and any interest coupons appertaining thereto shall bear the signature of the state treasurer. The countersignature of the governor on the bonds and the signature of the state treasurer on the coupons may be their printed or lithographed facsimile signatures. Pending the issuance of definitive bonds, temporary or interim bonds, certificates, or receipts of any denomination and with or without coupons attached may be issued as may be provided by the resolution. All bonds issued under or by authority of this chapter shall be sold to the highest and best bidder at such price or prices, at such rate or rates of interest, and after such advertising for bids as the department may deem proper, but it may reject any and all bids so submitted and thereafter sell the bonds so advertised under such terms and conditions as it deems advantageous. The purchase price of all bonds issued hereunder shall be paid to the state treasurer consistent with the provisions of the resolution pursuant to which the bonds have been issued or to the trustee designated in the bond resolution and held as a separate trust fund to be disbursed on the orders of the department.