Kitsap County, WA Gravel and Landscape Rock Delivery
Washington Rock Supply delivers gravel, stone and aggregate delivery in Kitsap County, WA, by the ton. If you are building a driveway, a parking pad or a drainage run, 5/8 minus is the crushed rock most of that work starts from.
It is the local name for crushed surfacing top course, the material that packs hard and sheds water instead of soaking it up.
Materials delivered in Kitsap County
5/8 minus is the Washington default surfacing course. It is crushed rock with the fines left in, so it compacts into a tight surface for driveways, parking pads and shed or shop slabs.
Contractors shorten those to CSBC and CSTC and order them as 1 1/4 minus and 5/8 minus.
Under a top course you place 1 1/4 Minus, the structural course for a drive, parking area or slab. Its larger top size and fewer fines carry load and stay workable on soft wet ground.
Rounded stone is filed under round rock here rather than crushed. Washington River Rock suits dry creek beds, downspout splash pads and rain garden armour, while Large River Rock arms swales, bank toes and culvert outfalls.
For soil and sand, Top Soil is screened and blended for lawns and grading out settlement, and Washed Sand goes into concrete mixes, paver setting beds and pipe bedding.
Choosing the right material
The Puget Sound lowland ground runs the same way in Kitsap County and in Mason County: glacial till over outwash sand, with silt and clay below.
King County and Pierce County each spread beyond the lowland into the Cascade Range and its east-slope valleys. That is a different ground profile, and it changes what a base has to do.
On lowland till, water perches and the base has to move it sideways. Where the ground runs to the mountains, the material choice follows that ground instead.
Ground conditions across Kitsap County
Across the Puget Sound lowland the ground is glacial material laid down by the Vashon ice sheet. A dense till cap sits over advance outwash sand, and the lower part of that till is hard enough that crews call it hardpan.
Rain soaks the loose upper soil, reaches the till and stops. The water table then sits close to the surface all winter instead of draining away.
That perched water is why a thin base shows its failure here. Anything built on till needs the water taken sideways to daylight, which is the work footing drains and washed drain rock do.
Winter rain perching where outwash sand meets clay below it is also what puts bluffs on the landslide maps, and it undercuts cut slopes and fill on a smaller scale. Riprap and large round rock protect those faces.
The wet season runs October through April. Under the state stormwater manual for western Washington, exposed soil must be stabilized within two days in that window against seven days in summer, so base and paver work is scheduled for the dry months.
Winters here are mild and wet, and the ground seldom freezes deep. It is saturation rather than frost that softens a base, so a drive that was firm in August can rut in February.
Delivery across Kitsap County
You order online and choose a quantity by the ton or by the yard. Each product page has a calculator that helps you size the load before you order.
Pick a delivery date at checkout, and a dump truck tips the material on site in one pile. Coverage includes Bremerton, Bainbridge Island, Silverdale, Port Orchard, Poulsbo, Suquamish, Indianola, Hansville, Kingston, Seabeck and Olalla.
Size your load, then place the order
Start with the calculator on the product page for the material you need, and settle the quantity before you order. Then choose your delivery date at checkout and Washington Rock Supply brings the load to your Kitsap County site.