Bulk Gravel Delivery to St. John, WA

Washington Rock Supply handles gravel and aggregate delivery in St. John, WA, and the surrounding Whitman County area.

We stock 5/8 minus, the crushed surfacing top course, CSTC, that Washington crews use for driveways and pads.

The town sits in the Palouse, where windblown loess covers the hills and the ground packs firm when the fines are left in your rock. Order by the ton or the yard and a truck brings it to your site.

Ground and Conditions in St. John

A thin base over this loess is the failure to watch for. When the top inch of silt thaws over frozen soil below, rain and snowmelt run across the surface instead of soaking in.

Water that cannot get in turns every slope into a drainage path. Loess is fine, deep and easily worked, and it moves easily too, so runoff needs a route before it starts cutting.

Long cultivated slopes across the Palouse shed sheet and rill erosion when rain falls on frozen ground. Build the base and the drainage so water leaves your pad instead of sitting under it.

Eastern Washington's wet weather season runs October 1 through June 30, and the dry summer months are the working window. The worst erosion risk is the thaw, not high summer.

Cold winters freeze the soil to depth here. Frost depth is set by the county or city building department, and published figures in the region include 24 inches at Spokane to the north and 18 inches in Grant County.

Confirm the local number before you plan flatwork.

Materials for St. John Projects

Bedding under pavers and flatwork is where a St. John project is won or lost.

The setting bed has to compact tight and stay put, which means a minus product with the fines left in.

Stone Screenings, sold locally as crusher dust or 3/8 minus, is the standard setting bed for pavers and flagstone. It compacts rather than drains, so a paver sits level instead of rocking.

Walkway Gravel, also called 1/4 minus or quarter minus, packs down tight underfoot on garden paths and side yards. It is the fine end of the minus range and holds a firm walking surface.

Under the bedding, 5/8 Minus is the Washington default surfacing course. It is crushed rock with the fines left in, so it packs hard and sheds water instead of soaking it up.

Driveways, parking pads and shed slabs all start here.

Where the ground is soft or wet, 1 1/4 Minus goes in below as the structural course. The larger top size and fewer fines let it carry load and stay workable.

For a washed, fines-free stone, Drain Rock goes into footing drains, French drains and infiltration trenches. It keeps its voids, which matters where water perches on till.

Delivery to St. John and the Surrounding Area

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

Pick a delivery date at checkout and a dump truck tips the material in one pile on your site. Bulk delivery reaches St.

John and other Whitman County towns, including Pullman, Colfax, Palouse, Tekoa and Rosalia.

Order Bulk Gravel in St. John

Size your load with the calculator on the product page, then place your order online for delivery in St. John.

Washington Rock Supply brings bulk gravel, stone, sand and soil to your site by the ton.