Sec. 1505.004. SURPLUS BONDS. A municipality may sell any available bonds not needed for the purpose for which the bonds were issued to improve or aid the improvement of a harbor of the municipality or a bar at the entrance of the harbor. Added by Acts 1999, 76th Leg., ch. 227, Sec. 1, eff. Sept. 1, 1999. SUBCHAPTER B. BONDS FOR NAVIGATIONAL FACILITIES IN CERTAIN COASTAL MUNICIPALITIES