Extra Heavy-Duty • Delivery Included
Our largest crushed base rock for soft or muddy ground, new roads and heavy equipment. Builds a solid foundation that won't sink or shift.
✓ Licensed, Bonded & Insured · CCB# 246110
3" minus base rock
What is 3" minus?
3" minus is crushed basalt rock ranging from 3" pieces all the way down to fine dust. It's our largest crushed base rock, and the big pieces spread the weight and bridge soft spots that smaller rock would sink into.
It's the go-to first layer for soft or muddy ground, new roads and areas that see heavy trucks and equipment. Because the rock is so large, you'll want equipment like a tractor or skid steer to move and spread it, and depending on the quarry, some pieces can be larger than 3". It's usually topped with 1-1/2" or 3/4" minus for a smoother surface to drive and walk on.
Size
3" to fines
Type
Crushed basalt
Compacts
Yes, tightly
Best for
Soft ground
Common uses
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Bridges wet, soft spots and keeps your surface from sinking.
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A strong first layer when building a road or driveway from scratch.
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Holds up under excavators, log trucks and heavy machinery.
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Keeps job site entrances firm and cuts down on mud.
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Solid ground for parking and storing equipment and materials.
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Long private roads and lanes that carry heavy loads.
Planning your order
Measure the length and width of your area, choose a depth, and our material calculator will estimate the yards you need. Deliveries start at 4 yards. Not sure? Call or text and we'll help you figure it out.
~108 sq ft
1 yard covers at 3" deep
~81 sq ft
1 yard covers at 4" deep
4–12 yds
Delivery load sizes
Finishing the surface? 3" minus is rough to drive and walk on. Top it with 1-1/2" minus or 3/4" minus for a smoother, tighter surface.
Our customers say it best
Here's what customers say about ordering from M4 Landworks.
3" minus questions
It's crushed rock that's 3" and smaller, all the way down to fine dust. The "minus" means everything smaller than 3" is included, and the fines fill the gaps between the larger rock so it packs down solid.
Use 3" minus when the ground is very soft or muddy, or when heavy trucks and equipment will be using the area. The bigger rock spreads the weight and bridges soft spots better. For firmer ground, 1-1/2" minus is usually enough.
You can, and it holds up to heavy traffic, but the large rock makes for a rough surface. Most people top it with 1-1/2" or 3/4" minus for a smoother finish.
Basalt is a hard, dense volcanic rock that's quarried and crushed into sharp, angular pieces. Compared to crushed round rock, which is river rock that's been crushed and still has some smooth faces, basalt has fractured faces on every side. That helps it lock together tighter and compact into a firmer, more stable surface.
Yes. Every price includes delivery, with no separate fees. Pricing is set by location, so choose your town to see the delivered price.
Yes. Along with delivery, we build and repair gravel roads and driveways, including grading, crowning and drainage. Learn about our driveway services.
Still have questions? Call or text 503-680-7446
Ready to order?
Check the price for your town and schedule your delivery online. Delivery is included in every price.
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