Gravel, Stone and Soil for Benton County, OR
Oregon Rock Supply handles gravel, stone and aggregate delivery in Benton County, OR for two kinds of buyers. Contractors building drives, pads and drainage want a spec they can trust.
Homeowners dressing up a yard want to know which material fits the job. Both start with 3/4 minus, the dense-graded base rock this part of the Willamette Valley runs on.
For prepping a shop floor in Philomath or topping a path in Corvallis, the material choice comes first. The ground here decides the rest.
Materials delivered in Benton County
Base materials carry the weight. Washed stone moves water.
Sands bed pipe and flatwork, soils feed lawns and beds, and decorative rock finishes the surface.
3/4 minus, the standard Oregon base
Oregon specifies base material by top size with a minus notation. The Oregon Standard Specifications for Construction set dense-graded base aggregate in Section 02630.10 at sizes including 3/4 inch - 0, and Section 00641.10 states that base aggregate is dense-graded unless otherwise specified.
In plain terms, 3/4 minus is crushed rock graded from 3/4 inch down to fines. Those fines let it compact into a tight surface under a drive, a pad or a shed base.
Open-graded aggregate, covered in Section 02630.11, is the clean, fines-free material.
Use 3/4 minus wherever you need a surface that stays put underfoot. Reach for drain rock or 3/4" crushed stone when the job is moving water instead.
Choosing the right material
Benton County sits on deep slackwater silt left by the ice-age Missoula floods, red clay and silty clay loam in the foothills, and river gravel along the Willamette and its tributaries. That ground sheds water slowly, which shapes what goes under a drive or a pad.
Linn County shares this ground region. Lane County touches it too, though Lane also reaches into the Cascade Range and Hood River Valley and out to the Oregon Coast and Coast Range.
On the ground Benton and Linn have in common, the base and drainage choices are the same.
Lincoln County is different. It sits on Oregon Coast and Coast Range ground: basalt headlands, uplifted marine sandstone and siltstone, dune sand and soft bluff material.
That means more need for slope protection and open drainage stone than a flat silt base does.
Ground conditions across Benton County
Across the Willamette Valley and Portland Basin, 35 to 45 inches of rain falls a year, almost all of it between November and March. It lands on tight silt and clay that sheds water slowly, and the lowlands hold a seasonal high water table.
That shapes how a base performs. Water that cannot drain away softens the subgrade under a drive or a pad, so a compacting minus rock earns its place.
Where water needs to leave, a clean open stone does the work.
Winter rain running off bare silt scours stream banks and slides on steep foothill slopes. Riprap and large river rock armor those edges against runoff, and a graded base keeps a yard from turning to mud.
Winters are mild and wet with only short freezes, so frost heave matters less than saturation and soft ground. Base and paving work concentrates in the dry season, and bare ground is typically stabilized quickly once the wet months arrive.
Delivery across Benton County
Bulk material arrives by dump truck and tips in one pile on site. You order online, choose a quantity by the ton or by the yard, and pick a delivery date at checkout.
Each product page has a calculator to help size the load.
Have the drop spot clear and reachable before the truck arrives. A firm, open area near the work keeps the pile where you want it and keeps the truck off soft ground.
Corvallis, Philomath, Monroe, Alsea and Blodgett all fall inside the delivery area.
Order gravel, stone and soil for your Benton County project
Oregon Rock Supply delivers base rock, washed stone, sand, soil and decorative rock for drives, patios, drainage and grading across Benton County. Choose your material, size the load on the product page calculator, and order by the ton or yard.
Place your order online when you are ready.