Mo. Rev. Stat. § 61.101
To perform duties as land surveyor, when — appointment of person to perform ...
61.101. To perform duties as land surveyor, when — appointment of person to perform duties of county surveyor, when (certain first class counties). — 1. If the county highway administrator is duly registered and licensed as a land surveyor under the provisions of chapter 327 , he shall perform any duties required by law to be performed by a county surveyor.
2. If the county highway administrator is not registered and licensed as a land surveyor, he may appoint a person or persons who are so registered and licensed to perform any duties required by law to be performed by a county surveyor.
(L. 1973 H.B. 715)