About Colorado Rock Supply: Aggregate for Clay, Frost and Altitude
Most people land on this page with a cart part-filled and one question in mind: will a truck actually come out this far, and is there a real order behind the button. Fair question when the order is eleven tons of base and the address is twenty minutes off a county road. So here is what this operation is, in plain terms, and what decides how far it reaches.
What this is: a catalogue you order from, not a yard you drive to
Bulk aggregate is bought online here. You pick a product, set a quantity in the unit that product is sold in, choose a delivery date and enter a ZIP code at checkout. There is no counter to walk up to and no ticket to collect. The whole point of building it this way is that a buyer sizing a shed pad on a Sunday evening can price the job, book the load and get on with the weekend instead of leaving three voicemails on Monday.
That suits the people who use it. Acreage owners rebuilding a lane that washed out. DIY builders pouring a pad for a garage or a hot tub. Homeowners converting bluegrass to xeric beds and needing cobble, mulch and a couple of tons of decorative rock in one go. Landscapers and small contractors who already know the grade they want and just want it delivered to a job address.
How far the delivery reach goes, and what settles it
Reach is settled by ZIP code at checkout, not by a radius drawn on a map. Enter the delivery ZIP with the order and the site confirms whether that address can be served and what the current delivery terms are. From there the order is matched to a supplier in the network near that address, an agent gets in touch to confirm exactly where the load is going, and the confirmation names the date you chose along with a local contact.
If the address is awkward, a gated drive, a tight mountain switchback, a bridge with a weight limit, check the delivery notes before ordering rather than after. A truck needs a clear route and a firm, level spot to tip on, and that matters more than distance does.
Why the product names here are not the national ones
A catalogue written for the country at large would list "road base" and leave it there. That is no use on a plan sheet in this state. Colorado specifies aggregate base by CDOT class number, so the base product is listed as Class 6 Road Base, which is the grade that ends up under most drives, pads and shed floors.
The same goes further down the list. The 1/4 inch minus material is listed as Crusher Fines, which is what a parks crew building a trail calls it, and what a mason screeding under flagstone calls squeegee. Cobble for a dry creek bed is Large River Rock. Naming material the way it is actually specified here saves the reorder that follows from ordering the wrong thing under a familiar name.
What the catalogue is built around
Two conditions drive most of it. Expansive clay across much of the state moves with moisture, so base depth and drainage decide whether a surface survives. Freeze-thaw cycling, sometimes several cycles in a single week at altitude, punishes any layer that holds water. That is why the range leans on compactable base grades, washed drainage stone and armor rock for the swales that scour after snowmelt, rather than on decorative product alone.
What you will not find claimed here
No promises about how fast a load lands, because that depends on the product and the address. No quarry ownership, no star ratings, no counts of customers served. Depths, sizes and weights on the product pages are the useful part, and they are the part worth checking before you order. If the job needs an answer this site cannot give, an engineered subgrade or a spec that names a grade not in the catalogue, ask a local engineer rather than a product page. Questions about material choice or quantity can go through the contact form, the material calculator will do the arithmetic for a measured area, and you can browse the range or check your area before either.
Common questions
Is there a yard or a counter I can turn up at?
No. Orders are placed on the site and material is delivered by dump truck to the address you enter at checkout. If you want to look at a material before committing to several tons, the product pages list size, grading and type for each one, and a small quantity ordered first is a reasonable way to see it on your own ground.
Can a contractor order to a job site instead of a home address?
Yes. The delivery address is whatever you enter at checkout, so a job site, a rental lot or a second property all work the same way. Leave a note on the order about where the pile should land and what the access looks like, since a job site rarely has an obvious drop spot the way a house with a driveway does.
How do I know the material matches the grade on my plan?
Compare the size and grading printed on the product page against the specification you have been given. Grades such as Class 6 and stone gradings such as #57 or #67 are described on each page in the terms they are written in locally. Where a plan calls for a grade that is not in the catalogue, it is not something this site can substitute for you.
Nobody will be at the property on the delivery date. Is that a problem?
Not usually, as long as the driver knows where the material goes and can get to it. Mark the spot with a cone or a flag, leave the route clear, and keep your phone on in case the driver needs to check something. A dump body has to be raised to tip, so the spot needs to be level and clear overhead.
Get Started
Browse the catalog, use the free gravel calculator to determine the quantity you need, and place an order online in minutes. Every order comes with free delivery.