Abstract: A matrix for aggregate containment and drainage system for road-base construction, or reconstruction--provides by reuse of vehicle tires. Each tire (unit) has one sidewall removed and drain holes provided in the remaining sidewall. A plurality of these units are positioned and fastened together to form a matrix. Each unit open side up, lying flat then receives aggregate construction material. The matrix configuration provides an excellent base for construction, minimizing aggregate loss due to sinking, wash out or lateral movement. A major ecological advantage is the beneficial use of otherwise problem used tires.