Bulk Gravel and Stone Delivery in Kittitas County, WA
Looking for gravel, stone and aggregate delivery in Kittitas County, WA? Washington Rock Supply sells bulk material online and runs it to your site.
For most driveways, parking pads and shed slabs here, the answer is 5/8 minus.
That is crushed rock with the fines left in, so it packs hard and sheds water instead of soaking it up. It is the Washington default surfacing course, and it is the same material contractors call crushed surfacing top course, or CSTC.
Ground Conditions Across Kittitas County
The Cascade Range and the east-slope valleys give you thin, stony soil over volcanic and granitic rock on the slopes. The valley floors hold glacial and river gravel instead.
Both are ground that moves under a load. A pad or drive built straight on that soil will pump and rut, because there is nothing under it to spread the weight.
Water behaves differently on the two slopes. The west slope takes heavy annual rain and sheds it fast off steep ground.
The east-slope valleys are dry, some under 10 inches a year, and their trouble is snowmelt and cloudburst runoff arriving all at once on ground with little cover.
That runoff scours road shoulders, ditches and culvert outfalls. After a heavy rain on snow, debris flows and washouts follow, and bare burned ground sheds sediment for years after a fire.
The working window in the mountain valleys runs roughly from late spring to early autumn, later at elevation, because snow closes the high ground. On the east slope, cold clear nights follow sunny days, and that freeze-thaw cycle heaves a gravel drive in a way the Puget lowland does not see.
Frost depth is set by the local building department, and published Washington figures run from 12 inches on the west side to 24 inches at Spokane and in Okanogan County. Confirm the number that applies to your site.
Materials Delivered in Kittitas County
Order by the local name and you get the right rock. Here is what each one is and what it does.
5/8 Minus is the one to understand first.
Contractors and quarries shorten those to CSBC and CSTC and order them as 1 1/4 minus and 5/8 minus. Pair a 1 1/4 Minus structural course under a 5/8 minus top course and you have a drive that stands up to a Kittitas County winter.
For drainage, Drain Rock is the washed 7/8 clean stone that keeps its voids. Where a smaller washed stone is wanted, 3/8" Crushed Stone works in paver joints and small drain runs.
Rounded stone is filed under round rock here, not crushed. Washington River Rock suits dry creek beds and downspout splash pads, and Large River Rock armours swales, ditch lines and culvert outfalls where a smaller stone would be carried off.
Sand and soil round out an order. Washed Sand goes into concrete mixes and pipe bedding, Mason Sand into mortar and stucco, and Fill Dirt raises grade before a granular course goes down.
Choosing the Right Material
Chelan County sits in the same ground region as Kittitas County: thin, stony soil over volcanic and granitic rock on the slopes, with glacial and river gravel on the valley floors. The ground is the same, so the base and drainage choices are the same.
King County spans more than one zone, including the Puget Sound lowland, which is ground Kittitas County does not have. That lowland holds deeper, finer soil and a milder freeze-thaw cycle, so a base there is not built the same way as one on the east slope.
Yakima County is a real contrast. Its ground is windblown loess over Columbia River basalt, and where the Ice Age floods ran, the loess was stripped off and the basalt left bare.
Loess is silt, and silt holds water and loses strength when it is wet. On ground like that, drainage matters more than depth, and a washed stone layer earns its place under the base.
Kittitas County ground is stony and gravelly instead, which drains better but still needs a compacting course on top. That is where 5/8 minus does its work.
Delivery Across Kittitas County
Ordering happens online. You choose a quantity by the ton or by the yard, and 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. That covers Ellensburg, Cle Elum and Thorp, along with the surrounding rural addresses.
Bulk delivery means a large load arriving at once, so it helps to have the drop spot clear before the truck reaches you. From there, the material is yours to move and place.
Questions About Gravel and Stone in Kittitas County
How much gravel do I need for my project?
Quantities are ordered by the ton or by the yard, and each product page has a calculator to help you size the load. Have your measurements ready before you order.
Do you deliver to Kittitas County?
Yes. Washington Rock Supply delivers bulk gravel, stone, sand and soil across Kittitas County, including Ellensburg, Cle Elum and Thorp.
What is the difference between crushed stone and Natural Pea Gravel?
Crushed stone has angular faces from the crusher, so it locks together and holds under a load. Natural Pea Gravel is rounded and washed, so it will not compact and should be edged where it can wander.
Order 5/8 Minus and Bulk Aggregate in Kittitas County
For a driveway, a parking pad or a shed slab in Kittitas County, 5/8 minus is the surfacing course to start with. Add a 1 1/4 minus base under it and the drive carries load through a freeze-thaw winter.
Order bulk gravel, stone, sand and soil from Washington Rock Supply online, choose your quantity, and have it delivered to your site.