Tex. Transportation Code § 373.102

(a) The commission or the department may not require a local toll project entity to pay for the use of state highway right-of-way or access, except:

(1) to reimburse the department for actual costs incurred by the department that are owed to a third party, including the federal government, as a result of that use by the local toll project entity; and

(2) as required under Subsection (b).

(b) A local toll project entity shall reimburse the department for the department's actual costs to acquire a right-of-way transferred to the local toll project entity. If the department is not able to determine that amount, the reimbursement must be in an amount equal to the average actual historical right-of-way acquisition values for comparable right-of-way located in proximity to the project on the date of original acquisition of the right-of-way.

(c) In lieu of reimbursement, and at the local toll project entity's sole option, the local toll project entity may agree to pay to the department a portion of the revenues of the project, in the amount and for the period of time agreed to by the local toll project entity and the department.

(d) Money received by the department under this section shall be deposited in the state highway fund and, except for reimbursement for costs owed to a third party, used to fund additional projects in the department district in which the toll project is located.

(e) The department shall reimburse a local toll project entity for any cost of right-of-way acquired by the entity for a toll project that will be developed, financed, constructed, and operated by the department.

(f) The commission or department or the local toll project entity may waive the requirement of reimbursement under this section.