When the road improvement district has been located and established as provided for in part 1 of this chapter, the monthly county court shall appoint three (3) commissioners, one (1) of whom shall be a competent civil engineer and two (2) of whom shall be freeholders of the county not living within the road improvement district and not interested in the road improvement district, or in a like question, nor related to any party whose land is affected.
T.C.A. § 54-12-201