Bulk Gravel and Stone Delivery in Carroll County, IL
Illinois Rock Supply handles gravel, stone and aggregate delivery in Carroll County, IL for contractors and homeowners alike. Some buyers come with a set of plans and a gradation number, and some are topping a long drive for the first time.
Most of that work starts with CA-6, the dense graded crushed limestone that carries the fines and acts as a compacted base. Across the Driftless and old-drift northwest, thin soil over rock and steep valley sides make what sits under a drive matter as much as what sits on top.
Materials Delivered in Carroll County
CA-6, also written CA6, is the Illinois base material. It is dense graded crushed limestone with the fines left in, and it is what a driveway, parking pad, shed base or garage slab is built on.
Article 1004.01 sets the coarse aggregate gradations CA 1 through CA 20, so dense graded base is CA-6, clean bedding stone is CA-7 or CA-11, and 3/8 inch chips are CA-16.
Those numbers are how material is specified and ordered in this state. Use them when you place an order and the right stone shows up.
Beyond the base and drainage stone, the yards carry Top Soil for lawns and bed prep and River Gravel for beds, borders and dry creek beds. Both are ordered by the ton or by the yard.
Delivery Across Carroll County
You order online and pick a delivery date at checkout. A dump truck tips the load on site in one pile.
Quantities are ordered by the ton or by the yard, and each product page has a calculator for sizing a load. Have your numbers ready before you order.
Delivery covers Savanna, Mount Carroll, Lanark, Thomson, Milledgeville, Shannon and Chadwick, along with the rest of the county.
Ground Conditions Across Carroll County
In this part of the state, the ground is deep wind-blown loess over dolomite and limestone. Ridges carry thin soil and valley sides are steep with rock close to the surface.
That combination moves water fast. Steep ground sends runoff into narrow valleys, springs and seeps come out of the dolomite, and heavy rain runs off loess ridges before it can soak in.
A thin base on that ground shows its failure at the edges first, where water gets under the stone and the surface starts to break away. The answer is a base course built from CA-6 and a clean stone layer to move water out.
Erosion follows the same pattern: gully and rill erosion in loess on steep slopes, rock fall and slumping on cut banks, and scour in the valley streams. Riprap armors banks, culvert outlets and pond edges where that water concentrates.
Work runs from the spring thaw into late fall. Steep drives and hillside pads are hardest to build in a wet spring, when the loess turns greasy under a truck.
Winters here bring sharp freeze and thaw, and frost works harder on thin soils over rock and on cut slopes. Frost depth is about 42 inches in line with the rest of northern Illinois, and the local building department sets it.
Choosing the Right Material
Carroll County sits in the Driftless and old-drift northwest, the only corner of Illinois the Wisconsin Episode ice never covered. Stephenson County shares that same ground region, so the soil, the slopes and the drainage behave the same way there.
Whiteside and Ogle counties are different ground. Both sit in the Northern Illinois till plains and Rock River country, where Wisconsin Episode till and loamy prairie soils lie over dolomite.
That till is thicker and less steep than loess over rock, so a base course there sits on firmer, more uniform ground. Here, thin soil on the ridges means a base needs to be built up rather than cut in.
Whiteside also takes in the sand and gravel of the Green River Lowland, and Ogle the rocky Rock River hill country. Both drain differently from a steep loess slope, which changes how much clean stone a drainage run needs.
Order Gravel and Stone for Your Carroll County Project
Start with the material that fits the job, whether that is CA-6 for a base, CA-7 for drainage or riprap for a bank. Each product page has a calculator, so settle the quantity and place your order online.
Illinois Rock Supply delivers bulk aggregate across Carroll County, IL.