Crushed Stone
We deliver every grade4a Stone
4A stone is angular crushed rock sized roughly 1 inch to 2 inches, with the fines washed out. The pieces are sharp, so they lock together under weight instead of rolling around when you drive or walk on them. Because it's clean, water drains straight through it. You'll see it most often under railroad ties, and it works the same way anywhere you need a strong, free-draining base under a heavy load.
The 4A is a gradation number from AREMA, the railway engineering group that writes ballast specs. It tells the crusher which sieve sizes the stone has to hit, and says nothing about what kind of rock it came from. So one yard of 4A can be granite, limestone, trap rock, or basalt, depending on what's quarried near you. Price runs a little higher than smaller crushed stone because the pieces are bigger and the rock has to be tough enough for track use.
Compare every grade
| Grade | Size | Shape | Washed | Top use | We deliver |
|---|---|---|---|---|---|
| #4A Stone (1″ To 2″, 4A, Limestone) | 1.5" to 3/4" | Angular | — | Drainage systems | We deliver it |
| #4A Stone (3/4″ Minus, Ballast, Granite) | 1.5" to 3/4" | Angular | — | Railroad ballast | We deliver it |
| #4A Stone (3/4″ Minus, Ballast) | 1.5" to 3/4" | Angular | — | Railroad ballast | We deliver it |
What people use it for
How to choose within 4a stone
Compaction over drainage
Angular pieces lock together. Pick a smaller size when you need the surface to stay put under a driveway or path.
Drainage over compaction
The larger the piece, the more room for water to move through. #1 or #57 for a French drain; #8 or smaller reads as loose gravel.
Washed vs. unwashed
Washed has the dust rinsed out, so it drains faster and won't track into the house. Unwashed compacts harder — better under a paver base.
All 4a stone grades
#4A Stone (1″ To 2″, 4A, Limestone)
We deliver#4A Stone (3/4″ Minus, Ballast, Granite)
We deliver#4A Stone (3/4″ Minus, Ballast)
We deliverOther crushed stone families
Chip Stone
We deliverChip stone is small crushed rock, roughly 1/4 inch to 1/2 inch across, with the dust screened out.
57 Stone
We deliver#57 stone is crushed rock screened between about 1 inch and 1/4 inch, with the dust washed out.
4 Stone
We deliver#4 stone is crushed rock screened between about 1 1/2 inches and 3/4 inch.
8 Stone
We deliver#8 stone is crushed rock screened between about 3/8 inch and 1/8 inch, with the fines washed out.
67 Stone
We deliver#67 stone is crushed rock screened between about 3/4 inch and 1/4 inch, with most of the dust washed out.
Crushed Stone 3 Stone
We deliver#3 stone is crushed rock in pieces roughly 1 to 2 inches across.
10 Stone
We deliver#10 stone is crushed rock screened down to dust and small pieces smaller than about 3/8 inch.
1 Stone
We deliver#1 stone is large crushed rock, roughly 2 to 4 inches across.
89 Stone
We deliver#89 stone is crushed rock screened between about 3/8 inch and the size of a coarse sand grain.
9 Stone
We deliver#9 stone is crushed rock screened to a 3/8 inch top size, with pieces running down to about the size of a grain of rice.
5 Stone
We deliver#5 stone is crushed rock screened between about 1 inch and 1/2 inch, with the fines washed out.
Crushed Stone 2 Stone
We deliver#2 stone is crushed rock screened between about 2 1/2 inches and 1 1/2 inches, with the dust washed out.