Bulk Gravel and Aggregate Delivery in Colorado

Colorado Rock Supply handles bulk gravel and aggregate delivery across Colorado, starting with the material most driveways here are built on: Class 6 road base. Spring snowmelt and short, intense summer thunderstorms put real stress on the ground, and the expansive bentonite clay common along the Front Range moves with moisture. That is why base depth and drainage matter more here than in stable soils. Order online, pick a quantity, and we bring the load to your job site.

Materials Delivered Across Colorado

Class 6 is the common driveway and pad base, while Class 5 is the heavier structural grade. We stock both, along with the other materials your project calls for.

Class 6 road base gets the most attention because it does the most work. It is a mix of 3/4 inch stone and fines that compacts into a firm, stable surface. Contractors order it by class number. It is the standard for driveways, parking pads, and shed or garage bases across the Front Range.

Ground and Climate Across Colorado

Colorado ground varies more than most states. The Front Range sits on expansive bentonite clay that swells when wet and shrinks when dry. That movement cracks under-built bases. Deeper base and proper drainage fix it. The Western Slope and Mountain Corridor see colder winters and more freeze-thaw cycling, often several cycles in a single week at altitude. Frost depth runs about 30 to 36 inches in much of the state, so base depth matters.

Spring snowmelt and short, intense summer thunderstorms drive most drainage problems. Runoff on slopes and in drainage swales scours the soil after these events. Rip rap and cobble armor the bank and slow the water. The Eastern Plains get less moisture but see wind and wide temperature swings. The San Luis Valley sits at altitude with a short working season. High Country projects face snowpack that limits compaction in winter.

Plan base and drainage work from late spring through fall. Frozen ground and snowpack stop proper compaction in winter at altitude. That timing holds across the Front Range, Western Slope, Eastern Plains, San Luis Valley, High Country, and Mountain Corridor.

Where We Deliver in Colorado

Colorado Rock Supply delivers across the state. We serve Adams County, Arapahoe County, and Boulder County along the Front Range. We reach Alamosa County in the San Luis Valley and Archuleta County in the southwest. Coverage extends to Baca County and Bent County on the Eastern Plains, plus Broomfield, Chaffee, Cheyenne, Clear Creek, and Conejos Counties. If your project sits in one of these areas, order online and we bring the material to you.

How to Order and Size a Load

Ordering is straightforward. Pick your material on the product page, choose a quantity by the ton or by the yard, and schedule delivery. Estimating quantity starts with the area and depth of your project. A materials calculator can help you convert square footage and depth into cubic yards. For a driveway base, plan for 4 to 6 inches of compacted Class 6. For a walkway, 2 to 3 inches of crusher fines or walkway gravel works well. Order a little extra to account for compaction and settling.

Order Class 6 Road Base for Your Colorado Project

It is the local standard for a reason, and it holds up to the bentonite clay, freeze-thaw cycles, and snowmelt runoff common across the state. Order Class 6 road base online today and schedule delivery to your site.