Texas Trunk System

The Trunk System is a network of rural divided highways that complements and includes elements of the Interstate Highway System. The minimal design criteria for this network specify that each highway should be at least a four-lane divided facility. That includes routes which are not yet made of four lanes, but ideally will be. The Trunk System will serve as a principal connector for all Texas cities with over 20,000 population as well as major ports and points of entry. The total mileage of the Trunk System, as stated in TxDOT Minute Order 910209, is limited to 11,500 miles. Update Frequency: 1 Years Source: Geospatial Roadway Inventory Database (GRID) Security Level: Public Owned by TxDOT: False Related Links Data Dictionary PDF [Generated 2025/03/26]