The franchise must provide that the underpass or tunnel be constructed so that, where it crosses a navigable body of water, the tunnel or underpass is at a depth below the fixed navigable depth of the body of water adequate to comply with law and the rules and regulations of a state authority or department of the United States government in charge of the body of water. Acts 1995, 74th Leg., ch. 165, Sec. 1, eff. Sept. 1, 1995.
Texas Legal Code