Tex. Loc. Gov't Code § 135.152

Money allocated under Section 135.101 or 135.102 to the court facility fee fund maintained in the county treasury as required by Section 135.151 may be used by a county only to fund the construction, renovation, or improvement of facilities that house the courts or to pay the principal of, interest on, and costs of issuance of bonds, including refunding bonds, issued for the construction, renovation, or improvement of the facilities.