Order Class A Roadstone and Crushed Stone in Madison County, IA

Iowa Rock Supply handles gravel, stone and aggregate delivery in Madison County, IA. Start with the calculator on any product page to size the load, then order by the ton or the yard.

Class A roadstone is the base most drives and farm lanes here start with. It is crushed limestone with the fines left in, so it binds and compacts.

Madison County sits on the Southern Iowa Drift Plain, where old till hides under a windblown loess mantle. That ground shapes which material goes down and how deep.

Materials Delivered in Madison County

Order by the job. A new drive, a patio bed, a drain, or a slope that keeps washing out each spring.

Driveways and farm lanes

Class A Roadstone is the 3/4 inch crushed limestone base course.

11. County engineers and city entrance standards call the same material Class A roadstone.

It goes down as the base for drives, parking pads, shed bases and farm lanes.

For a new drive, a soft spot, or a lane that carries heavy equipment, 1 Inch Roadstone is the coarser grade. It lays under a finer surface course.

Where an existing drive has thinned out, Driveway Gravel tops it over a compacted roadstone base.

Drainage and clean stone

Clean Rock is washed and open graded, so water moves straight through it. It suits subdrains, drainage tile backfill, pipe bedding, septic rock and backfill behind retaining walls.

3/4" Crushed Stone covers drive surfacing where a loose, free draining stone is wanted, plus pipe bedding and trench backfill.

Riprap is revetment stone, specified by class letter under Section 4130 for revetment stone, erosion stone and gabion stone. It armors stream banks, culvert outlets, pond edges and slopes against spring runoff.

Paving, bedding and finish work

Limestone Screenings bed pavers and flagstone, fill joints, and top-dress a compacted roadstone base. Washed Sand beds and levels under slabs and pavers.

Mason Sand goes into brick and block mortar, paver joints and horse arena footing.

Decorative and growing material

River Rock is rounded gravel washed out of the Missouri, Mississippi and their tributary valleys. It fills decorative beds, borders and dry creek beds.

Top Soil is screened black dirt for lawn repair, grading and bed prep. Shredded Mulch holds moisture in beds, tree rings and windbreak plantings through a dry August.

Ground Conditions Across Madison County

Across the Southern Iowa Drift Plain, old pre-Illinoian till sits under a windblown loess mantle, usually 5 to 30 feet thick. Beneath it are buried paleosols.

The Yarmouth-Sangamon paleosol is a thick, gummy grey clay that water will not move through.

That layer matters on a drive. Steeply rolling ground drains at the surface, but the clay subsoil does not take water.

Water perches, runs off, and leaves gravel soft at the bottom of a grade. A base that was built without accounting for that clay will pump and rut.

This is Iowa's most eroded landscape. Streams cut deeply, and hillslopes carry a fine texture of rills.

Gully and stream bank erosion after heavy rain is the main reason rock goes in on slopes and outlets.

The drift plain has the longest working season in the state. Clay soils still need to dry before anything gets compacted, so a wet spring pushes base work back several weeks.

Cold winters bring repeated freeze-thaw, which heaves gravel drives and lanes every spring.

Delivery Across Madison County

Order online and pick your quantity by the ton or by the yard. Each product page has a calculator to help size the load before you check out.

Pick a delivery date at checkout, and a dump truck tips the material on site in one pile.

Bulk delivery reaches Winterset, Earlham, St. Charles, Truro, Patterson, Macksburg, Bevington and Peru, along with the surrounding rural lanes and acreages.

Choosing the Right Material

Polk County sits on the Des Moines Lobe, the youngest glacial ground in Iowa. That is thick, compact pebbly loam till of the Dows Formation, 45 to 60 feet deep, with sand and gravel along old meltwater channels.

A base there deals with different ground than Madison County does.

Dallas County spans more than one zone, covering both the Des Moines Lobe and the Southern Iowa Drift Plain. Warren County shares Madison County's ground region, so the soil and drainage picture is the same.

On ground like Madison County's, the clay subsoil is what decides the choice. A fines-bearing roadstone binds and compacts into a base.

Clean, open graded stone lets water move through instead of perching, which is why it belongs in drains and behind walls.

Order Class A Roadstone for Your Madison County Project

Class A roadstone is the crushed limestone base course for drives, pads and lanes across Madison County. Pair it with clean rock where water needs to move, and screenings where pavers go down.

Order online by the ton or the yard, size the load with the calculator, and pick your delivery date at checkout.