Under Section 52, Article III, Texas Constitution, the district may own, operate, maintain, improve, design, acquire, construct, finance, and issue bonds, notes, or other obligations for macadamized, graveled, or paved roads or improvements, including storm drainage and other improvements located in or adjacent to road rights-of-way, in aid of those roads.
Tex. Spec. Dist. Loc. Laws § 3872.104