Bulk Aggregates for Patios in Coleharbor, ND

North Dakota Rock Supply handles gravel and aggregate delivery in Coleharbor, ND, from base course to bedding.

So does everything that sits on top of it.

Across the Missouri Coteau, the ground is stony, uneven till left where glacier ice melted out. That shapes what you order here.

Ground and Conditions in Coleharbor

Hummocky stagnation moraine means the till under a Coleharbor yard is rarely level and rarely uniform. Pockets of sand and gravel sit in kames and eskers, and prairie potholes dot the low spots by the thousand.

Drainage on the Coteau is unintegrated. The sloughs and potholes are not connected and no stream runs through much of it, so snowmelt and rain collect in closed low spots and drives between the hills stay soft.

A thin base course shows that first. It ruts, pumps and breaks apart at the edges once the ground under it stays wet, and no amount of surface gravel rescues it.

The fix is a real base course of Class 5, placed so water has somewhere to go and the surface has something to sit on. Gully cutting on the steep flank of the Missouri Escarpment, wind erosion on exposed hilltops and slumping where saturated till sits on shale all point the same way.

Work runs from the end of the spring thaw into late fall. Frozen ground stops compaction through the winter, and spring load restrictions slow hauling while the frost comes out.

Winters are long and severe, with deep ground frost and a hard thaw that heaves gravel drives, approaches and township roads. Frost depth is set by the city or county rather than by a statewide table.

Materials for Coleharbor Projects

Bedding under pavers and flatwork is where material choice shows. The bedding has to be uniform and it has to drain, or the pavers move the first spring the ground heaves.

Stone screenings are the standard bedding for pavers and flagstone. Screenings, also called crusher fines, pack into a tight surface and fill the joints between units.

Washed sand is the other bedding choice, for leveling and for sand under slabs and flatwork.

Class 5 goes down first as the compacted base under all of it. It is the standard North Dakota base gravel, and it carries drives, parking pads and shop and shed bases.

Class 13 is the surfacing gravel for an approach, lane or gravel drive where you want a binding, blade-friendly material rather than a full base course. Scoria, the red burned lignite clinker from the west of the state, surfaces paths, yards, lanes and parking areas.

Washed rock, sold as 1 inch washed rock or drain rock, goes in drain tile beds, sump discharge, downspout runs and foundation drains. Pea rock covers walkways, play areas, dog runs and pipe bedding.

For decorative beds, river rock holds up better than bark in North Dakota wind. Black dirt, which is what this market calls screened topsoil, handles lawns, grade repair and bed prep.

Delivery to Coleharbor and the Surrounding Area

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

Pick a delivery date at checkout and a dump truck tips the load on site in one pile. Coleharbor sits in McLean County, and delivery reaches Garrison, Washburn, Underwood, Wilton and Turtle Lake as well.

Order Your Load for Coleharbor

Start with the calculator on the product page and settle on your quantity before you order. Class 5, Class 13, screenings, washed sand and washed rock all deliver to Coleharbor and McLean County.

Place your order online and a truck brings the load to your site.