Order Class A Roadstone and Crushed Stone in Story County, IA
Iowa Rock Supply handles gravel, stone and aggregate delivery in Story County, IA. Class A roadstone is the crushed limestone base course with the fines left in, and it is what most drives, farm lanes and parking pads here start from.
Story County sits on the Des Moines Lobe, the youngest glacial ground in Iowa, where thick pebbly loam till runs deep under the flat ground. That ground holds water, and it shapes what you put on top of it.
Ground Conditions Across Story County
This is pothole country. The drainage network across the Des Moines Lobe is young, and kettles and closed depressions hold water until it moves somewhere else.
Most of the ground drains only because it is tiled. Snowmelt and spring rain sit on the surface where the ground below is still frozen.
Compaction waits for the frost to come out and for the flat ground to shed its spring water. Base and paver work runs from late spring to the fall freeze, and a wet spring shortens that window.
Erosion here comes less from slopes than from ditch and tile outlet scour. Washouts happen where runoff concentrates on the moraine ridges, which is where clean rock and rip rap earn their place.
Freeze-thaw heaves gravel drives, lanes and field entrances as the ground lets go in spring. That is the season to look at a drive before you top it.
Materials Delivered in Story County
Class A roadstone is the standard Iowa base course and the material county engineers and city entrance standards call roadstone.
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It binds and compacts because the fines stay in it. Use it for driveways, parking pads, shed bases and farm lanes.
Fill dirt raises grade and backfills low ground before a roadstone course goes down. Shredded hardwood mulch holds moisture in beds and windbreak plantings through a dry Iowa August.
Fill Dirt, Shredded Mulch and 3/8" Natural Pea Gravel round out the list.
Choosing the Right Material
Polk County shares Story County's ground. Both sit on the Des Moines Lobe, on the same thick Dows Formation till with sand and gravel along old meltwater channels.
The base and drainage choices are the same on both sides of the line.
Marshall County is different ground. Its Iowan Surface is loamy till planed down by cold-climate erosion, with a thin, patchy loess cover and a pebble band near the surface.
Limestone bedrock is shallow there, so a base course sits on shallower, stonier ground.
Jasper County differs again. Its Southern Iowa Drift Plain is old till under a windblown loess mantle, with the Yarmouth-Sangamon paleosol beneath, a gummy grey clay water will not move through.
On ground like that, drainage matters more than base thickness. Clean rock and limestone screenings do different jobs, so match the size to the work.
Delivery Across Story County
Order online and a dump truck tips the load on site as one pile. Delivery covers Ames, Nevada, Huxley, Story City, Slater, Roland, Gilbert, Cambridge, Colo, Maxwell, Zearing, McCallsburg, Collins and Kelley.
Quantities are ordered by the ton or by the yard, and each product page has a calculator. Pick a delivery date at checkout.
Questions About Stone and Gravel in Story County
What is the difference between crushed stone and Natural Pea Gravel?
Crushed stone is angular rock with broken faces, like Class A roadstone or clean rock, and it locks together when compacted. Natural Pea Gravel is rounded, washed river gravel at about 3/8 inch.
Rounded stone will not compact into a base, so it belongs on walkways, play areas and patio bedding instead.
Should I order material by the ton or by the yard?
Both work, and the choice is yours at checkout. Tons measure weight and yards measure volume, and the two do not convert by a fixed figure.
Each product page has a calculator to size the load from your own numbers.
Which stone is best for drainage in Story County?
Clean rock is the one to use. It is washed and open graded, so water moves straight through it, which suits subdrains, pipe bedding and retaining wall backfill.
For tight spots and paver joints, 3/8 inch crushed stone and limestone screenings are the finer options.
Order Roadstone and Drainage Stone in Story County
Iowa Rock Supply delivers bulk gravel, crushed limestone, sand, topsoil and mulch across Story County, from Ames and Nevada to the smaller towns around them. Order online by the ton or the yard, and a truck brings it to your site.