Dense Grade Aggregate (DGA) NMDOT

NMDOT base course is a dense graded aggregate made from a compactable blend of stone dust and crushed limestone up to 1 inch in size. Also known as dense grade aggregate (DGA), this material compacts tightly to form a strong, stable foundation designed to handle traffic and structural loads while allowing controlled drainage. Its balanced gradation helps it lock together under pressure, making it a dependable base material for spec-driven construction projects.

Common applications for NMDOT base course

• Road base and highway sub-base construction
• Driveway and access road installation
• Walkways and hardscape preparation
• Base layer beneath asphalt or pavers