Crusher Run vs Fill Dirt

Crusher Run

Dense blend of crushed stone and stone dust ranging from 1.5" down to fine particles. The fines fill voids between larger stones, creating a surface that self-compacts into an exceptionally firm, stable base. Crusher run is the most popular single-material solution for driveways and parking areas.

Fill Dirt

Subsoil material free of organic matter, used for grading, filling, and raising elevation. Fill dirt is a lower-grade soil that lacks the nutrients of topsoil, making it ideal for structural and non-growing applications where settling must be minimized.

Crusher Run

• ✓ Driveways
• ✓ Parking areas
• ✓ Road base
• ✓ Foundation sub-base
• ✓ Backfill
• ✓ Equipment pads

Fill Dirt

• ✓ Grading
• ✓ Filling depressions
• ✓ Raising elevation
• ✓ Backfill
• ✓ Construction site prep
• ✓ Under slabs

Crusher Run

• + Self-compacts into an extremely stable surface
• + Single-layer application (no need for multiple grades)
• + Excellent load-bearing capacity
• + Affordable and widely available
• + Fines lock stones together to resist shifting

• − Not decorative — utilitarian gray appearance
• − Can become muddy if drainage is poor
• − Dusty in dry conditions
• − Tracks onto paved surfaces
• − Requires compaction equipment for best results

Fill Dirt

• + Very affordable — often cheapest material available
• + Compacts firmly for structural support
• + Does not decompose or settle like organic soil
• + Widely available from construction sites
• + Ideal base under gravel or concrete

• − Not suitable for growing plants
• − Must be free of debris and contaminants
• − May contain clay that drains poorly
• − Needs compaction in layers for stability
• − Quality varies widely between sources

Crusher Run

Mix of angular crushed stone from 1.5" down to fine stone dust. The blend of sizes is what makes it self-compacting. Color is typically gray or blue-gray depending on source rock. Sometimes called "crusher run" because it's the raw output of a stone crusher.

Fill Dirt

Fine to coarse soil particles, free of organic matter like roots, grass, or leaves. Color ranges from tan to reddish-brown depending on local geology. "Clean fill" means free of debris, rocks larger than 3", and contaminants.