Mich. Comp. Laws § 247.910

Sec. 10. (1) The costs of a project that are eligible to be funded under section 11(3)(a) and (c) shall be developed by the administrator in accordance with the adopted policies of the commission and shall include at a minimum those costs normally associated with highway construction projects such as project planning, design, right-of-way acquisition, and construction, but excluding routine maintenance. (2) The costs of a project that are eligible to be funded under section 11(3)(d) shall be developed by the administrator in accordance with the adopted policies of the commission and shall exclude right-of-way acquisition, design, engineering, and routine maintenance. (3) Matching funds of not less than 20% of the total eligible costs of a project shall be required for those projects described in section 9(1)(a), (d), and (e). This requirement may be set aside in the case of extreme economic hardship for projects described in section 9(1)(a) in the local unit in which the project is located. Evaluation criteria for projects described in section 9(1)(a) shall include whether there is a contribution of more than the required 20% matching funds as part of the determination of which projects are to be funded. (4) An individual grant for a project described in section 9(1)(b) shall not exceed $250,000.00, and matching funds of not less than 50% of the total eligible costs of the project shall be required.