1 1/4 Minus in Washington
Also sold as Crusher Run
Also known as: 1-1/4 minus, CSBC
1 1/4 Minus gives Washington driveway and shop-pad projects a compacted base where wet hardpan or dry inland soil needs steady support.
- Size: 3/4 inch minus
- Grading: Crushed stone blended with stone dust and fine particles
- Type: Angular crushed stone
From $396 for 1 ton, delivery included (larger loads cost significantly less per ton)
Free delivery included
Free delivery anywhere in Washington
Pick a delivery date
Weekday delivery, earliest Nov 3
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Everything You Need to Know About 1 1/4 Minus
Size and Grading
- Size
- 3/4 inch minus
- Grading
- Crushed stone blended with stone dust and fine particles
- Type
- Angular crushed stone
In the build, 1 1/4 Minus belongs above the prepared ground and below the surface that carries traffic. West of the Cascades, glacial hardpan can hold water near the surface; farther east, sandy ground and winter freezing create a different set of concerns. Its angular rock and fine material work together when compacted, helping create a stable bed for driveways, shop pads, and access areas.
Do not treat this base as a substitute for drainage where water is trapped on hardpan. Set drainage paths first, then spread 1 1/4 Minus across a graded subgrade and compact it while the material has enough moisture to work together. A carefully prepared layer is especially useful around Puget Sound and the Olympic Peninsula, where persistent rain can expose weak spots beneath a gravel surface.
Quickly Calculate How Much You Need
Material: 1 1/4 Minus
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 (206) 582-6792 and we'll help you calculate the right quantity for your project.
Not sure how much you need? The Crusher Run Calculator has depth guides, coverage charts and worked examples for this material.
Common Uses
Driveway & Parking Subbase
For driveways and parking spots, crusher run can form a compacted layer below the surface. A well-packed base helps vehicle areas resist ruts, settling, and wear, which matters on wet Puget Sound sites.
Patio & Walkway Foundation
Put a compacted crusher run layer below pavers, flagstone, or concrete for a flat base that helps limit movement and settlement. It is a practical starting layer for hardscape work.
Shed & Structure Pads
A compacted crusher run pad gives sheds, hot tubs, gazebos, and other outdoor structures a level footing. The material helps spread the weight and reduce settlement that may affect the structure.
Grading & Site Preparation
For site work, crusher run can level uneven ground, bring up low spots, and set the grade before building begins. After it is compacted, it gives equipment and construction work a stable surface.
Why Choose 1 1/4 Minus
Maximum Compaction
Crusher run combines crushed rock with fine dust. During compaction, the fines occupy open spaces between the stone to form a dense base that helps reduce movement and settlement under weight.
Self-Cementing Action
Moisture and compaction let the fines lock around the larger pieces of stone in crusher run, forming a cohesive layer that hardens with time. That natural bond can reduce the need for extra stabilizers.
Economical Performance
Crusher run combines a range of particle sizes in a material used for construction base layers. Spread and compact it to create support beneath a project.
Base Material Uses
Crusher run can be compacted for driveway, foundation, and structural-base projects. Match the layer depth and compaction to the load and ground conditions at the site.
