Mich. Comp. Laws § 247.121: Transfer of surplus funds.

Sec. 1.

If a county operating under the county road system of this state has a surplus in the general fund, the board of commissioners of that county may, by resolution, direct the transfer of a part of that surplus from the general fund to the county road fund, to be used for the construction, maintenance, and repair of highways under the supervision and direction of the board of county road commissioners.