What is the difference between crushed stone and Natural Pea Gravel?

Crushed stone is quarried rock broken to a size and left angular, which is what lets a fines-bearing grade such as Class A roadstone bind and compact. Natural Pea Gravel is rounded river gravel, washed out of the Missouri, Mississippi and tributary valleys, and it stays loose underfoot. Iowa says Natural Pea Gravel, not pea stone. Use it for walkways, play areas and patio bedding rather than as a base.

Should I order material by the ton or by the yard?

Either works, and quantities are ordered both ways. Each product page has a calculator, so you can size the load there before you submit the order. If you already know the figure you want, order by the ton or by the yard and pick a delivery date at checkout. A dump truck then tips the load on site in one pile.

Which stone is best for drainage in Louisa County?

Washed, open graded stone is the drainage choice, because water moves straight through it. Clean rock in the 1 inch and 1 1/2 inch sizes suits subdrains, drainage tile backfill, pipe bedding and septic rock. For a finer drainage run or paver joints, 3/8 inch washed chips work well. Riprap handles bank protection where the current is the problem.

Louisa County Class A Roadstone and Gravel Delivery, IA

Iowa Rock Supply brings gravel, stone and aggregate delivery in Louisa County, IA to Columbus Junction, Wapello, Morning Sun, Letts, Columbus City and Oakville. Class A roadstone is the crushed limestone base course buyers here know by name, with the fines left in so it binds and compacts.

Ground in this part of the Mississippi River corridor runs to sand, gravel, silt and clay on the river terraces and floodplain, with older till and loess uplands rising behind the bluff line. That mix decides how much base a drive or pad needs.

Delivery across Louisa County

You order online and pick a delivery date at checkout. Quantities are ordered by the ton or by the yard, and each product page has a calculator if you want to size the load before you submit the order.

A dump truck tips the load on site in one pile, so it helps to have the spot clear before the truck arrives. Delivery covers Columbus Junction, Wapello, Morning Sun, Letts, Columbus City and Oakville, along with the rest of Louisa County.

Materials delivered in Louisa County

Class A roadstone is the standard Iowa base course.

11, and county engineers and city entrance standards call the same material roadstone.

It goes down under driveways, parking pads, shed bases and farm lanes. Section 4123 covers modified subbase, and Section 4130 covers revetment stone, erosion stone and gabion stone by class letter.

Ground conditions across Louisa County

Across the Mississippi River corridor, sandy terraces drain fast while the floodplain barely drains at all. Spring snowmelt from the upper basin raises the river and backs water up the tributary mouths, flooding low ground long after local rain has stopped.

Low lying work waits for the spring river crest to pass before base goes in. Upland work follows the ordinary thaw to fall freeze pattern, and repeated freeze-thaw is enough to heave gravel drives and river road surfaces each spring.

River bank cutting and flood scour work on the banks, and gully erosion works the loess covered bluffs above the valley. Riprap armors those slopes, while clean rock gives a drainage layer where water has to move.

Choosing the right material

Johnson County, Washington County and Henry County all sit on the Southern Iowa Drift Plain, the same ground region as Louisa County. Old pre-Illinoian till lies under a windblown loess mantle there, usually 5 to 30 feet thick, with buried paleosols beneath.

Because the ground region is the same, the base and drainage choices carry over the same way. 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 clay sits under a drive or pad, water that gets into the subgrade has nowhere to go. A clean, open graded stone such as clean rock gives that water a path, while Class A roadstone builds the compacted base above it.

Order roadstone, stone and soil in Louisa County

Iowa Rock Supply delivers Class A roadstone, washed stone, sand, topsoil and fill across Louisa County, from Columbus Junction and Wapello to Morning Sun, Letts, Columbus City and Oakville. Order online by the ton or the yard, size the load with the calculator on the product page, and choose your delivery date at checkout.

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