Tex. Transportation Code § 463.069

(a) In addition to a toll or other charge imposed under Section 367.011 or other law, an entity that operates an international bridge may impose a fee for the use of the bridge as follows:

(1) not more than $1 for passenger vehicles;

(2) not more than $2 for commercial motor vehicles; and

(3) not more than 25 cents for pedestrians.

(b) Before a fee may be imposed under this section, the entity must enter into a written agreement with an authority relating to the imposition and disposition of the fee. The agreement must provide:

(1) for collection of the fee by the entity and remittance of the authority's portion of the fee to the authority each month; and

(2) if more than one entity operates an international bridge, for the division of the amount described by Subsection (c)(1) among the entities.

(c) Of the fees collected under this section:

(1) 25 percent shall be retained by the entity for transportation projects or complementary transportation services;

(2) 50 percent shall be used for a rail mass transit system; and

(3) 25 percent shall be used for regional high capacity transit.

(d) The percentage described by Subsection (c)(3) may be retained by the entity if:

(1) the entity is a mass transit provider; and

(2) mass transit was provided in the municipality in which the international bridge is located on or before January 1, 2019.