Mich. Comp. Laws § 250.92

Sec. 2. When any state department, board, institution or commission shall consider it in the interest of the state that any access road or bridge on property under its control is in need of construction, improvement or maintenance, they shall present a request to the state department of administration, setting forth the necessity of such construction, improvement or maintenance, and the state department of administration shall present its recommendations to the legislature for the making of specific appropriations for the project or projects out of the state trunk line fund.