Tex. Gov't Code § 30.00310
The clerk of the municipal courts of record shall file the original papers and proceedings in each case under the direction of the presiding judge. Instead of filing the original papers, papers may be preserved by microfilm or other process that correctly and legibly reproduces or that forms a medium for copying or reproducing. The filed or preserved papers constitute the records of the courts and a separate record book is not required. Preserved records are admissible in evidence in civil cases as provided by the Texas Rules of Evidence relating to the admissibility of contents of writing, recordings, and photographs. Records, however maintained, shall be destroyed by the court clerk after five years after final disposition of the case. Records, however maintained, relating to parking offenses shall be destroyed by the court clerk after two years after final disposition of the case.
Tex. Gov't. Code § 30.00310