Michigan's transportation infrastructure is owned and maintained primarily by counties
and cities. However, the state owns and maintains the state trunkline system which is
critical to economic development and interstate and intrastate commerce.
Michigan funds its transportation infrastructure investments primarily with state fuel
and registration taxes, in part with federal aid, and finally, with a small amount of
local tax compared to other states. The low level of local funding is very important when
considered in light of the Headlee Amendment's limitation on state taxation to 9.49% of
personal income. Michigan has also largely avoided the toll road system that many other
states have employed.
The following subsections discuss the control of the current system, Michigan
transportation funding, the disposition of Michigan state revenues, and Michigan's current