You can't get married at that facility. The city jails are short term facilities and have no provision for inmate marriages whatsoever. Marriage for an inmate would only happen to long-term offenders in a state or federal facility for an inmate with a clean incident report history.
https://www.inmateaid.com/ask-the-inmate/how-do-i-marry-someone-locked-up-in-st-louis-city-justice-center-to-get-the-marriage-application-the-law-says-we-both-have-to-show-up-but-i-know-there-is-away-around-him-not-showing-up-bc-he-is-locked-up#answer
Accepted Answer Date Created: May 24,2019