Maintenance of any township or district road as defined in Section 2-103 or any grade separation constructed as provided in Section 6-701.1, subject to the approval of the county superintendent of highways and the Department.
     Maintenance work may be done with county or road district equipment or forces as the county superintendent of highways and the respective highway commissioners may determine. If any road or grade separation constructed in any road district as provided in this Section is not maintained in a manner satisfactory to the Department and the county, no further funds shall be expended in such road district until such road or grade separation is so maintained or provision for such maintenance is made.