Class A Roadstone, Sand and Gravel Delivery in Marshall County, IA

Iowa Rock Supply handles gravel, stone and aggregate delivery in Marshall County, IA. Work here starts once frost is out and the low ground has drained, and runs to the fall freeze.

Class A roadstone is the base most drives and lanes get built on, and it is the material to plan a spring project around.

Low spots stay soft well after the uplands are ready. Time a delivery with that in mind and the pile lands on ground that will take a truck.

Ground Conditions Across Marshall County

Marshall County sits on the Iowan Surface, where drainage networks are well established but stream gradients stay low. Rain and snowmelt move slowly, and pockets of old wetland ground still hold water.

That matters for a base. A driveway or pad needs a drainage layer under it so water has somewhere to go instead of sitting against the roadstone.

Clean, open graded stone is what lets water move straight through.

Sheet wash on the long, low slopes is the other side of the same coin. Runoff concentrates and cuts gullies, and banks scour after heavy rain or a thaw.

Riprap armors those edges where water is doing the damage.

Cold northern Iowa winters bring a long frozen season and repeated freeze-thaw that lifts gravel drives, walks and slabs each spring. Frost depth is commonly 42 inches, and the local building official sets footing depth.

Materials Delivered in Marshall County

It defines Class A crushed stone and Class B crushed stone to Gradation No.

11, and Class C gravel to Gradation No. 10.

County engineers and city entrance standards call the same material roadstone and write it as Class A roadstone. Section 4130 covers revetment stone by class letter, and Section 4123 covers modified subbase.

Class A roadstone is the 3/4 inch crushed limestone base course with the fines left in, so it binds and compacts. It goes under driveways, parking pads, shed bases and farm lanes.

The 1 inch roadstone is the coarser grade for a new drive, a soft spot or a lane that carries heavy equipment, laid under a finer surface course.

Limestone screenings, clean rock, washed chips and rip rap cover the rest of the stone work here.

Sand and soil round out the order. Washed sand beds and levels slabs and pavers, mason sand goes into brick and block mortar and paver joints, and black dirt handles lawn repair, grading and bed prep.

Fill dirt raises grade and backfills before a roadstone course goes down, and garden soil is blended richer for raised beds and planting areas.

Shredded hardwood mulch holds moisture through a dry Iowa August. River rock and large river rock are rounded gravel washed out of the Missouri, Mississippi and their tributary valleys, used in decorative beds, borders and dry creek beds.

Delivery Across Marshall County

A dump truck tips the load in one pile at the address you give at checkout. Have the drop spot clear and reachable before the truck arrives, with room for the pile to sit where the material will be worked from.

Ordering is online. Pick the material, choose a quantity by the ton or by the yard, and pick a delivery date at checkout.

Each product page has a calculator if you want to size the load first.

Deliveries cover Marshalltown, State Center, Melbourne, Albion, Gilman, Liscomb, Rhodes, Laurel, Haverhill, Clemons and St. Anthony.

Choosing the Right Material

Story 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 and hummocky, stony ground on the moraine ridges.

Marshall County's Iowan Surface ground is older and planed down, so the base and drainage choice is made against different ground.

Jasper County and Poweshiek County both sit on the Southern Iowa Drift Plain. That is old pre-Illinoian till under a windblown loess mantle, usually 5 to 30 feet thick, with buried paleosols beneath.

The Yarmouth-Sangamon paleosol is a thick, gummy grey clay that water will not move through, and farmers call working in it gumbo.

Where that gummy clay sits under a drive, water has nowhere to go, so a clean, open graded drainage layer under the base does the work. On the Iowan Surface the concern is different: slow gradients and wet pockets, which call for the same free draining stone in the low spots.

Riprap is the answer on slopes and banks where runoff concentrates. For a surface, walkway gravel gives a finer, walkable finish than drive rock.

Order Roadstone, Gravel and Sand for Your Marshall County Project

Iowa Rock Supply delivers Class A roadstone, clean rock, washed chips, riprap, sand, black dirt, fill dirt and decorative stone for drives, pads, farm lanes, drainage, bank armoring and bed work across Marshall County. Order online, size the load on the product page, and choose a delivery date at checkout.

Place your order and a truck will tip the material on site.