605 ILCS 10/14.1
The Authority shall, prior to the issuance of any bonds under this Act, except refunding bonds, prepare and submit to the Governor for his approval preliminary plans showing the proposed location of the route or routes of the particular toll highway for which the bonds are to be issued, which plans shall designate the approximate point of the commencement and the termination of said route or routes and shall also designate the municipalities to be afforded reasonable connections therewith, and to be served thereby. The Authority shall at the same time submit to the Governor for his approval preliminary estimates of the cost of the construction of the toll highway, shown on said preliminary plans. If the Governor shall approve the preliminary plans and the estimate of the cost thereof, the Authority may thereupon proceed with the issuance of bonds as hereinafter provided. Prior to the issuance of bonds for or the commencement of construction of any new toll highway, however, that particular toll highway shall be authorized by joint resolution of the General Assembly.
605 ILCS 10/14.1