Iowa Code § 306.15: Purchase and sale of property.

If as to any one or more properties affected by the proposed vacation and closing of a secondary road, it appears to the board of supervisors to be in the interest of economy or public welfare, the board may purchase or condemn, by proceeding as this chapter provides, the entire properties, and make payment for them. After the road has been vacated and closed the board shall sell the properties at the best attainable price.