The Michigan highway system consists of 117,659 miles as of September 30, 1993. The
state controls 8.2% of this system, a relatively small percentage compared to other
states. Michigan counties control 75.1% of the roads, and cities and villages control the
remaining 16.7%. In 17 reference states studied by the Citizens Research Council of
Michigan in 1992, the states controlled an average of 23% of their total systems.1
Michigan's state-owned system carries 53% of the state's total traffic, even though its
total mileage is only 8.2% of the total system.