Utah Code § 76-3-208: Imprisonment -- Custodial authorities.

(1) Persons sentenced to imprisonment shall be committed to the following custodial authorities:

(a) felony commitments shall be to the Utah State Prison;

(b)

(i) class A misdemeanor commitments shall be to the jail, or other facility designated by the town, city, or county where the defendant was convicted, unless the defendant is also serving a felony commitment at the Utah State Prison at the commencement of the class A misdemeanor conviction, in which case, the class A misdemeanor commitment shall be to the Utah State Prison for an indeterminate term not to exceed one year with a credit for one day, unless the offense is an offense described in Subsection 76-3-204(1)(b)(i), in which case there is no credit for one day; and

(ii) the court may not order the imprisonment of a defendant to the Utah State Prison for a fixed term or other term that is inconsistent with this section and Section 77-18-111; and

(c) all other misdemeanor commitments shall be to the jail or other facility designated by the town, city or county where the defendant was convicted.

(2) A custodial authority may place a prisoner in a facility other than the one to which the prisoner was committed when:

(a) the custodial authority does not have space to accommodate the prisoner; or

(b) the security of the institution or prisoner requires the prisoner to be placed in a facility other than the one to which the prisoner was committed.