Fill and Base Material Delivered in New Underwood, SD

South Dakota Rock Supply handles gravel and aggregate delivery in New Underwood, SD. Gumbo sheds water instead of taking it in, so rain runs off fast and leaves ruts behind.

Base course builds the pad that stands up to it.

Delivery to New Underwood and the Surrounding Area

Order online and a dump truck tips your load on site. Pick your quantity by the ton or by the yard, then choose a delivery date at checkout.

Each product page carries a calculator. Use it to size the load before you order, then set the date that fits your schedule.

New Underwood sits in Pennington County, and deliveries reach sites here and across the county, including Rapid City, Box Elder, Wall, Hill City and Keystone.

Materials for New Underwood Projects

Raising grade comes first on most sites here. Fill dirt, also called clean fill, builds a pad up before any base course goes down.

Use it to bring a low spot level, backfill around a foundation, or lift a building pad out of the gumbo.

Base course is the crushed base layer that goes on top of that pad.

Base course carries driveways, parking pads, and shop or shed slabs.

Gravel cushion is the South Dakota term for the cushion course rolled out under concrete and asphalt. It also acts as the crushed top course on a gravel drive.

Washed rock, called drain rock or clean rock, handles water. It fills drain tile, drywells, sump and downspout runs, and window wells.

Topsoil, also called black dirt, gives you a growing layer for lawns and bed prep where the native ground is thin clay over shale.

Ground and Conditions in New Underwood

Weathered Pierre shale, the sticky swelling clay everyone here calls gumbo, sits under thin clay soils across the Pierre shale plains and Missouri breaks. Gumbo sheds water rather than taking it in, so rain runs straight off and what does soak in makes the clay swell and stay soft for days.

That behavior decides how a base is built. An under-built pad on ground like this pumps and shifts once the clay takes on water, and the surface above it breaks up.

Fill dirt brings the pad up first, then base course goes down over a stable grade.

How wet the gumbo is matters more than the calendar. The ground is unworkable while it is wet, and the season runs from the spring dry-out to freeze-up.

Winters here are cold, open and windy, with deep frost and hard freeze-thaw cycling. Drives heave in winter and turn to gumbo when the frost comes out.

Rapid City uses a frost depth of 42 inches in its adopted residential code, and the local building official sets the figure that applies to your job.

Order Base Course and Fill Dirt in New Underwood

Base course is the material this ground calls for, and fill dirt is what gets the pad up before it goes down. Order both online by the ton or by the yard, size the load with the calculator, and set your delivery date at checkout.

A truck tips the pile on your site in New Underwood.