Mo. Rev. Stat. § 221.044
No person under the age of seventeen years, except those transferred to the court of general jurisdiction under the provisions of section 211.071, shall be detained in a jail or other adult detention facility as that term is defined in section 211.151. A traffic court judge may request the juvenile court to order the commitment of a person under the age of seventeen to a juvenile detention facility.
(L. 1989 H.B. 502, et al.)
*This section was amended by both S.B. 793 and S.B 800, 2018. Due to a delayed effective date, both versions are printed.