3/4 Road Mix in Idaho
Also sold as Road Base
Also known as: 3/4 minus, road mix, crushed base
Choosing base without checking the site can cause trouble in Idaho, where alluvial gravel, loess, and clay behave differently when wet.
- Size: 1 inch minus
- Grading: Graded mix of crushed stone, gravel and binding fines
- Type: Crushed aggregate blend
From $369.00 for 1 ton, delivery included
Larger loads cost less per ton: 500 tons is $17,970.00 ($35.94 per ton). Pick any quantity below for a delivered price.
Free delivery included
Free delivery anywhere in Idaho
Pick a delivery date
Weekday delivery, earliest Sep 25
“Six tons for overflow parking behind the shop in Twin Falls. Idaho Rock Supply beat the quarry's price by a good margin and had it dumped before my first customer showed up. Hasn't shifted under the delivery trucks yet.”
Owen K. · Verified Buyer
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Everything You Need to Know About 3/4 Road Mix
Size and Grading
- Size
- 1 inch minus
- Grading
- Graded mix of crushed stone, gravel and binding fines
- Type
- Crushed aggregate blend
Conditions vary sharply between Idaho regions. Ground in the Treasure Valley may be alluvial gravel, while Palouse and Panhandle soils can retain water. For driveways, construction access, and pads expected to carry equipment, 3/4 Road Mix provides a tightly packed foundation that can handle sustained use.
Its graded crushed material is designed to close up under compaction, creating a stable layer beneath the surface work. Prepare the subgrade before spreading 3/4 Road Mix, and compact it so the particles seat together rather than remaining loose. This is especially important where loess or clay beneath the project can soften after moisture reaches the ground.
Quickly Calculate How Much You Need
Material: 3/4 Road Mix
How to Measure
Measure the length and width of your project area in feet
Decide on depth in inches (2" for landscaping, 4" for driveways)
Enter the values above and we'll calculate the tonnage you need
Need help figuring out the right amount? We can help!
Call or text us at our contact form and we'll help you calculate the right quantity for your project.
Not sure how much you need? The Road Base Calculator has depth guides, coverage charts and worked examples for this material.
Common Uses
Road & Highway Construction
Traffic needs support below the pavement, so road base is placed as the base layer for roads and highways. Under asphalt or concrete, it carries loads across the subgrade rather than concentrating them in one area.
Heavy-Duty Driveways
Repeated weight from heavy trucks, equipment trailers, and commercial traffic can damage an unsupported driveway. Road base adds the strength needed to resist rutting and wear in these demanding applications.
Construction Site Access Roads
Road base can form temporary or permanent routes into a jobsite. Its compacted surface handles equipment travel and provides footing through wet weather, helping work continue.
Commercial Parking & Loading Areas
For commercial lots, loading zones, and industrial sites with daily heavy vehicle and equipment traffic, road base provides the supporting layer beneath the surface.
Why Choose 3/4 Road Mix
Maximum Load Capacity
Heavy loads, including fully loaded dump trucks and industrial equipment, need their weight spread over a broader area. Compacted road base provides dense support that helps prevent failures caused by concentrated loads.
Road Base Material
Select road base according to the requirements of your project.
All-Weather Performance
Installation and compaction matter because wet, dry, and freeze-thaw cycles affect a base layer. A dense, compacted road base reduces water entry that can soften the material below.
Economical for Large Projects
Paved surfaces cost more than road base, while road base provides commercial-grade performance. It is suited to large access roads, parking areas, and work yards that need strength across a wide area.
Frequently Asked Questions About 3/4 Road Mix
Customer Reviews
Farm road held up through spring planting
Our farm sits out on the Camas Prairie above Cottonwood, and the road into the shop turns to butter every spring. Forty tons of road base graded in over two days fixed the worst quarter mile of it. Planting season came and went without a truck getting stuck for the first time in years, and it's held through two good rains since.
Paula G. · Cottonwood, ID · Verified Buyer
Great base once we moved it ourselves
Ten tons of road base for the driveway leading up to our orchard outside Weiser. The lane is narrower than it looks on a map, so the tandem couldn't make the turn and dropped the load by the mailbox instead of at the top. Took my son and me most of a Saturday moving it with the tractor bucket, but it packed in solid once it was there.
Ivy C. · Weiser, ID · Verified Buyer
Contractor grade base for a subdivision cul-de-sac
We run base rock for three or four driveways a month, and the cul-de-sac pad we did off a lake road near Coeur d'Alene was our biggest order yet at sixty tons. Idaho Rock Supply staged two tri-axles back to back so we never lost a minute waiting between loads, and the gradation was consistent truck to truck, no clay balls or oversized rock to sort out. We compacted in four inch lifts and had it passing a proof roll by that afternoon. Eight months of freeze thaw later and the pad hasn't shifted a bit, which says more about the material than anything we did.
Grant W. · Coeur d'Alene, ID · Verified Buyer
Overflow lot handles every rig now
Six tons for overflow parking behind the shop in Twin Falls. Idaho Rock Supply beat the quarry's price by a good margin and had it dumped before my first customer showed up. Hasn't shifted under the delivery trucks yet.
Owen K. · Twin Falls, ID · Verified Buyer
Turnaround finally holds the milk truck
Twenty five tons of road base went down on the turnaround by the milking parlor outside Rexburg. The driver timed it around our irrigation schedule so the ground wasn't soft, and dumped both loads exactly where the tractor could spread them. Six months in with the milk truck backing through twice a day, and there's not a soft spot anywhere on it.
Lindsey P. · Rexburg, ID · Verified Buyer
3/4 Road Mix has 5 verified customer reviews with an average rating of 4.8 out of 5.
