Bulk Material Delivery in Mica, WA

For gravel and aggregate delivery in Mica, WA, Washington Rock Supply sells bulk material by the ton and tips it on your site. This part of Spokane County sits on Ice Age flood gravel, cobbles and sand left by the Missoula floods.

That open ground drains fast, so a drive here needs a compacting course rather than a draining one. 5/8 minus is the local name for the crushed rock with its fines left in, and it packs hard under a vehicle.

Materials for Mica Projects

Water is the thing to plan around on this ground. The valley gravel is open enough that surface water keeps moving down, and compacted fill or a shallow basalt shelf can hold a wet spot instead.

Washed stone is how you give that water somewhere to go.

Drain rock, also called 7/8 clean, is washed with no fines, so it keeps its voids and lets water pass. Use it in footing drains, French drains, curtain drains and infiltration trenches.

For trench backfill, pipe surround, drain fields and under-slab drainage, 3/4" Crushed Stone is the washed counterpart to a minus product. It drains instead of compacting.

Drywells and heavy drainage take a larger open stone. #4 Crushed Stone is the size for that work, and it is also called drywell rock.

Downspout runs and small drain lines can use 3/8" Crushed Stone, a washed, fines-free stone. Washington yards also call the same material 3/8 clean.

Where you need a surface that holds together instead of draining, the minus products do that job. 5/8 Minus is the Washington default surfacing course, and quarries here also list it as crushed surfacing top course, or CSTC.

Below it, 1 1/4 Minus is the structural course, also called crushed surfacing base course, or CSBC. It has a larger top size and fewer fines, so it carries load and stays workable on soft wet ground.

Delivery to Mica and the Surrounding Area

Washington Rock Supply delivers bulk material across Mica and the rest of Spokane County, including Spokane, Cheney, Liberty Lake, Airway Heights and Mead. You order online and a dump truck tips the load on your site.

Quantities are ordered by the ton or by the yard. Each product page has a calculator, and you pick your delivery date at checkout.

A bulk load arrives as one tipped pile, so it helps to have the spot clear before the truck reaches you. From there you move the material to where it is going.

Ground and Conditions in Mica

Timing shapes the work here more than most places. Eastern Washington has a long dry summer season for base and paving work, and a hard stop once the ground freezes.

The wet weather season for erosion control runs October 1 through June 30. A site left open through that window sends sediment into the ground that feeds the aquifer below, which has carried a federal sole source designation since 1978.

Runoff also cuts the loess on the hills, gullies in draws and road ditches during the spring thaw. Frost is real here too.

Spokane sets its footing depth well below the western Washington figure, at 24 inches in the Spokane Municipal Code design criteria.

That frost figure belongs to Spokane, not to Mica, so treat it as the regional benchmark it is. Repeated freeze-thaw still works on any unbound surface in this part of the state.

Questions About Gravel in Mica

Do you deliver 5/8 minus to Mica, WA?

Yes. Washington Rock Supply delivers 5/8 minus and other bulk material to Mica and across Spokane County.

You order online by the ton or by the yard, and a dump truck tips the load on your site. Delivery dates are chosen at checkout, and each product page has a calculator for sizing a load.

What gravel is best for a driveway in Mica?

On this ground, 5/8 minus is the surfacing course that fits. Its fines are left in, so it compacts hard and sheds water rather than soaking it up.

Under it, 1 1/4 minus is the structural course for soft or wet ground. Where you want drainage instead of compaction, drain rock is the washed option.

Order Bulk Gravel for Your Mica Project

Washington Rock Supply delivers bulk gravel, washed stone, sand and soil to Mica and the surrounding parts of Spokane County. Choose your material, set your quantity by the ton or yard, and pick a delivery date at checkout.

Order online when you are ready.