Iowa Code § 491.38

Any corporation heretofore or hereafter organized under the laws of this state for the purpose of constructing or operating, or constructing and operating, a bridge, one extremity of which shall rest in an adjacent state, may merge or consolidate the stock, property, rights, franchises, privileges, assets and liabilities of such corporation with the stock, property, rights, franchises, privileges, assets and liabilities of a corporation organized for a similar purpose under the laws of such adjacent state, upon such terms not in conflict with law as may be mutually agreed upon, and thereafter such merged or consolidated corporations shall be one corporation with such name as may be agreed upon, and shall have all of the property, rights, privileges, assets and franchises, and be subject to all of the liabilities, of the merging or consolidating corporations.