Bulk Aggregates for Pathways in Colton, WA

Washington Rock Supply handles gravel and aggregate delivery in Colton, WA for two kinds of buyers: contractors building drives, pads and drainage, and homeowners patching a path or topping up a walkway. Both end up asking for the same material first, 5/8 minus, the crushed rock Washington yards sell as crushed surfacing top course.

Whitman County sits on deep loess, and that fine windblown silt shapes what you order here. It works easily, it moves easily, and it holds water at the surface when the ground below is still cold.

Ground and Conditions in Colton

Across the Palouse and the Blue Mountain foothills, the ground is loess, windblown silt piled into rolling hills. It is fine, deep and easily worked, and it moves easily too.

Basalt comes back to the surface in the canyons.

A thin base course over that silt is where paths and drives go wrong first. The fines in a minus product knit together and hold, but only when there is enough material under the traffic to spread the load.

Water is the other half of it. When the top inch of loess thaws over soil still frozen below, rain and snowmelt run across the surface instead of soaking in.

Every slope becomes a drainage path, so runoff needs somewhere to go before it starts cutting.

Erosion follows the same pattern. Sheet and rill erosion of loess on long slopes is driven by rain falling on frozen ground, and the worst risk in this part of the state is the thaw, not high summer.

Eastern Washington's wet weather season runs October 1 through June 30. The working season is long and dry through the summer and closes when the ground freezes.

Frost depth is set by the county or city building department, so confirm the local number before you plan footings.

Materials for Colton Projects

Paths and walkways are where fines and screenings earn their place. These are minus products, meaning the crusher fines stay in the mix, so the stone packs down tight underfoot instead of staying loose.

Walkway Gravel, also called 1/4 minus or quarter minus, is the fine end of that range. It is the size for garden paths, side yards and any surface you want firm and smooth to walk on.

Stone Screenings, sold locally as crusher dust or 3/8 minus, compacts rather than drains. That makes it the bedding for pavers and flagstone and the material for filling joints.

For the drive or pad the path leads to, 5/8 Minus is the Washington default surfacing course. The fines are left in, so it packs hard and sheds water instead of soaking it up.

Under that, 1 1/4 Minus is the structural course, the CSBC layer. Its larger top size and fewer fines let it carry load and stay workable on soft, wet ground.

Where water needs to move rather than sit, Drain Rock, or 7/8 clean, is washed with no fines and keeps its voids. Use it for footing drains, French drains and infiltration trenches.

Delivery to Colton and the Surrounding Area

You order online, and the first choice is quantity: by the ton or by the yard. Each product page has a calculator if you want to size the load before checkout.

Pick a delivery date there, and a dump truck tips the material on site in one pile.

Washington Rock Supply delivers across Whitman County, including Pullman, Colfax, Palouse, Tekoa and St. John.

Colton sits in the Palouse, so a rural approach is normal, and it helps to have the drop spot clear before the truck arrives.

Order Your Path and Drive Materials

Start with the calculator on the product page to size your load by the ton or the yard, then choose a delivery date at checkout. Washington Rock Supply delivers 5/8 minus, screenings and washed stone across Colton and Whitman County.

Place your order online and a truck will tip it on site.