Texas Transportation Code - TRANSP § 253.009. Lien

(a) An assessment is secured by a lien against the real property of the assessed property owner.

(b) The lien is effective on the date written notice of the assessment is filed for record in the office of the county clerk of the county in which the property is located.

(c) The written notice must be in recordable form and contain the:

(d) An assessment lien under this chapter is inferior only to a tax lien or mortgage lien recorded before the effective date of the assessment lien.