(1)    The department shall designate and, subject to sub. (2), mark the route of I 43, commencing at the North Avenue interchange in the city of Milwaukee and proceeding northerly to the Keefe Avenue and Atkinson Avenue interchange in the city of Milwaukee, as the “Jeannetta Simpson-Robinson Memorial Highway” in recognition and appreciation of the good works of Jeannetta Simpson-Robinson, a lifelong community leader and activist who championed the poor, the disadvantaged, children, and peaceful non-violent resolutions to conflicts.

   (2)   Upon receipt of sufficient contributions from interested parties, including any county, city, village, or town, to cover the costs of erecting and maintaining markers along the route specified in sub. (1) to clearly identify to motorists the designation of the route as the “Jeannetta Simpson-Robinson Memorial Highway,” the department shall erect and maintain the markers. No state funds, other than from the receipt of contributions under this subsection, may be expended for the erection or maintenance of the markers.