The legislature may provide for the laying out, construction, improvement and
maintenance of highways, bridges, culverts and airports by the state and by the counties and
townships thereof; and may authorize counties to take charge and control of any highway
within their limits for such purposes. The legislature may provide the powers and duties of
counties in relation to highways, bridges, culverts and airports; may provide for county road
commissioners to be appointed or elected, with powers and duties provided by law. The
ad valorem property tax imposed for road purposes by any county shall not exceed in any year
one-half of one percent of the assessed valuation for the preceding year.
Structure Michigan constitution