AGGREGATE BASE COURSE
We deliver itAggregate Base Course (1.5″, Idot, Ca-2)
Aggregate Base Course with the IDOT CA-2 specification in a 1.5" size range is a durable, crushed stone material engineered for foundational strength and stability. Produced by mechanically crushing and screening quarried rock, this aggregate meets Illinois Department of Transportation (IDOT) standards, ensuring consistent quality and performance for demanding construction applications.
Also called
If a contractor or a spec sheet handed you one of these names, this is the rock they mean.
What people call it
Yard and spec names
Ask for aggregate base course and we'll know what you want. If you have a spec number, give us that instead and we'll match it.
What people use it for
- Road base
- Driveway subbase
- Parking lot foundation
- Pathway construction
- Structural fill
We deliver aggregate base course
Road Base
Road base is crushed stone blended with fines that compacts into a load-bearing pad — the layer that goes under a driveway or slab, not the surface you see.
See delivered price →Crushed Concrete
Crushed concrete is old slab and pavement run back through a crusher — angular and load-bearing like fresh crushed stone, cheaper because the feedstock is reclaimed.
See delivered price →Aggregate Base Course next to what it gets confused with
| Rock | Size | Shape | Where it wins | Can we deliver it |
|---|---|---|---|---|
| Aggregate Base Course (1.5″, Idot, Ca-2) | 1.5" | Angular | Road base | We deliver it |
| Aggregate Base Course | — | Angular | — | We deliver it |
| Aggregate Base Course (#1 Minus, Vdot) | #1 Minus | Angular | — | We deliver it |
Questions people ask
What is Aggregate Base Course used for?+
What size is Aggregate Base Course?+
Where can I get Aggregate Base Course?+
How much aggregate base course do you need?
The calculator lives on the road base product page — prefilled with a sensible depth and delivered price by ZIP.
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