Bulk Aggregate Delivery Across Cook County, IL
Illinois Rock Supply handles gravel, stone and aggregate delivery in Cook County, IL. The base material here is CA-6, dense graded crushed limestone with the fines left in.
It goes under driveways, parking pads, shed and garage bases and trench backfill. Order it online and a dump truck tips it on site.
Materials Delivered in Cook County
Start with the project. A driveway, a patio and a drain each call for a different material, and the local name is what gets you the right load.
CA-6 carries the most weight of any material here. It is the Illinois base.
Article 1004.01 sets the coarse aggregate gradations CA 1 through CA 20. Dense graded base is CA-6, clean bedding stone is CA-7 or CA-11, and 3/8 inch chips are CA-16.
Chicago area yards also call CA-6 grade 8 or grade 9, or road mix. Downstate yards say CA-6.
Grade 8 is not #8 crushed stone, which is a different material entirely.
For a patio, the bedding layer is typically Lime Screenings over a compacted base. For a drain, reach for CA-7 or 3/4" Crushed Stone.
For a driveway, Driveway Gravel surfaces an existing drive or tops a compacted base. Walkway Gravel gives paths and garden walks a finer, walkable surface.
Ground Conditions Across Cook County
Across the Chicago lake plain and the northeastern moraines, the ground is heavy silt and clay close to Lake Michigan. Inland, clay-rich till fills the moraines.
That soil sheds water rather than takes it. Flat ground has little fall, and heavy summer downpours overwhelm yard grades and storm sewers in older built-up areas.
An under-built base on that ground moves. Fines-bearing material like CA-6 holds up as a compacted base, while clean washed stone like CA-7 and CA-11 is what drains.
Erosion shows up along the Lake Michigan bluff and shore from storm waves and high lake levels. Stream banks scour after heavy rain, and bare clay lots sheet wash.
Base, driveway and paver work runs from the spring thaw into late fall. Frozen ground stops compaction through the winter, and a wet spring keeps crews off soft clay.
Northeastern Illinois jurisdictions carry a frost depth of about 42 inches in the residential code, and the local building department sets it. Frost lifts drives, walks and slabs every spring.
Delivery Across Cook County
Order online and choose a quantity by the ton or by the yard. Each product page has a calculator, and you pick a delivery date at checkout.
A dump truck tips the load on site in one pile. That covers Chicago, Cicero, Schaumburg, Evanston, Arlington Heights, Palatine, Skokie, Des Plaines, Orland Park, Oak Lawn, Berwyn, Mount Prospect, Oak Park and Hoffman Estates.
Have the drop area clear and reachable by a truck before the delivery date. Bulk loads are heavy, so firm ground helps.
Choosing the Right Material
DuPage County, Lake County and Will County all sit in the Chicago Metro region, and all three share the same ground region as Cook County.
That ground is the Chicago lake plain and the northeastern moraines: heavy silt and clay near the lake, clay-rich Wisconsin Episode till inland, dolomite bedrock shallow in places, and outwash sand across the Kankakee plain.
The ground is the same across all four counties, so the base and drainage choice does not change at the county line. CA-6 works as a compacted base in each of them.
Clean washed stone handles drainage in all four. CA-7 and CA-11 cover bedding and drains, and CA-16 chips cover tighter bedding work.
Order CA-6 and Washed Stone for Cook County
CA-6 is the base material for Cook County drives, pads and trench backfill, and the clean washed stone covers the drainage work around it. Illinois Rock Supply delivers bulk gravel, stone, sand, soil and mulch across the county.
Pick your material, choose a quantity by the ton or the yard, and set a delivery date at checkout.