Mo. Rev. Stat. § 214.060
Whenever it is desired to have any street, avenue, thoroughfare or place in any cemetery vacated, the corporation, association or person owning or controlling such cemetery shall present to the county commission of the county within which such cemetery is located, at a regular or adjourned term of such commission, a petition praying for such vacation, particularly describing the street, avenue, thoroughfare or place sought to be vacated, and shall file with such petition proof that notice of the filing of such petition has been given for at least twenty days by at least three printed or written notices posted in public places in such cemetery, at least one of which shall be posted in each street, avenue, thoroughfare or place sought to be vacated, and published in some newspaper, if such there be, published in the town or city in which or adjacent or approximate to which such cemetery is located. If a remonstrance signed by any three lot owners of such cemetery remonstrating against granting the prayer of such petition be filed on or before the first day of the term at which such petition is filed, then the county commission shall inform itself as to the propriety of granting such petition, and if the commission be of the opinion that the petition should be granted, or if no remonstrance be so filed, the county commission shall make an order vacating the streets, avenues, thoroughfares and places as prayed for in the petition, and the title to the lands so vacated shall revert to the corporation, association or person by whom the cemetery was platted or to the successors of such corporation, association or person.
§ 214.060, RSMo