Effective July 1, 2004, the maximum gross vehicle weight on existing state-maintained roads and public highways designated for gross weight vehicle load of sixty-five thousand pounds, seventy-three thousand five hundred pounds and eighty thousand pounds shall have a tolerance of ten percent. All requirements for vehicle design and axle weights otherwise established under this code remain applicable. In no case may the commissioner authorize weight limits on any state-maintained road or public highway that would jeopardize or otherwise limit federal highway fund appropriations to this state. The commissioner of highways shall, by December 31, 2004, review and revise, as the commissioner deems appropriate, weight limits for all state-maintained roads and public highways and provide to the Joint Committee on Government and Finance a report denoting all weight limits as they have been designated on state-maintained roads and public highways.