May the county use the lateral road funds for any purpose, including buying office supplies?
No. Under Section 256.005 of the Transportation Code, the lateral road fund is a dedicated fund that can only be used for the maintenance of roads. The funds may be used for the purchase of capital equipment to be used for the construction and maintenance of farm-to-market roads. Op. Tex. Att'y Gen. No. O-6031 (1945).