Whenever the state highway commissioner and any county, city or village shall agree to acquire, construct, or improve any limited access highway or highways as defined by this act, the state highway commissioner shall procure plans and specifications for such project and an estimate of the cost thereof. The board of county road commissioners and the board of supervisors of the county and the legislative body of such city or village shall, by resolution, approve such plans, specifications and estimate of cost.
MCL 252.56