Linn County, OR Gravel and Landscape Rock Delivery

Winter rain hits tight valley silt and clay and has nowhere to go. That is why gravel, stone and aggregate delivery in Linn County, OR starts with 3/4 minus for anything that has to hold up underfoot.

Oregon Rock Supply sells it by the ton and delivers it.

Water moves slowly through this ground. A drive or pad built on it needs a base that compacts and locks up, not a clean stone that lets the mud pump through.

Materials Delivered in Linn County

Order by project. A driveway, a patio, a drain and a garden bed each want a different rock.

3/4 minus carries the base work.

Oregon specifies base material by top size with a minus notation, and the Oregon Standard Specifications for Construction set dense-graded base aggregate in Section 02630.10 at sizes of 2 1/2 inch - 0, 2 inch - 0, 1 1/2 inch - 0, 1 inch - 0 and 3/4 inch - 0.

Section 00641.10 states that base aggregate is dense-graded unless otherwise specified. Section 02630.11 covers open-graded aggregate, the clean, fines-free material.

That pair is the whole idea. Minus rock keeps its fines and compacts under a drive.

Clean rock has the fines screened out and drains.

Ground Conditions Across Linn County

Linn County spans more than one ground region. In the Willamette Valley and Portland Basin, the valley floor is deep slackwater silt laid down by the ice-age Missoula floods, with red clay and silty clay loam of the Jory series in the foothills.

In the Cascade Range and Hood River Valley, the ground is young volcanic: andesite and basalt with pumice, cinders and ash over it.

Rainfall runs 35 to 45 inches a year in the valley, almost all of it between November and March. It lands on tight silt and clay that sheds water slowly, and the lowlands carry a seasonal high water table.

An under-built base fails here. Silt and clay hold water, and a thin layer of rock over that soft subgrade will rut and pump.

Build the base for the ground underneath it, not for the load on top.

Erosion follows the same pattern. Winter rain runs off bare silt, banks scour on the Willamette and its tributaries, and slopes in the foothills slide.

Riprap and large river rock armor those edges. In the Cascades, snowmelt and rain-on-snow runoff scour culverts, shoulders and stream banks.

Timing matters. Portland treats October 1 to April 30 as the wet weather season and requires bare ground to be stabilized within two days, against seven days from May 1 to September 30.

Base and paving work concentrates in the dry season. In the Cascades the season is short, and snow and frozen ground stop base and paving work from late autumn until the ground dries out in late spring.

Frost is a minor problem in the valley next to winter saturation and soft subgrade. The Oregon figure of 12 inches applies below about 2,500 feet, and the county sets the figure.

From 2,500 to 4,000 feet it is 18 inches, and 24 inches at 4,000 feet and above.

Delivery Across Linn County

Order online and pick a quantity by the ton or by the yard. Every product page has a calculator to help you size the load.

Choose a delivery date at checkout and a dump truck tips the material on site.

Delivery covers Albany, Lebanon, Sweet Home, Harrisburg, Brownsville, Mill City, Halsey, Tangent, Lyons, Scio, Shedd, Cascadia and Foster.

Bulk rock arrives as one tipped pile. Have the spot clear and reachable before the truck arrives, and plan where the pile should sit for the work ahead.

Choosing the Right Material

Lane County shares the same ground regions as Linn County, so the base and drainage choices there work the same way. There is no difference to plan around.

Deschutes County sits in Central Oregon on the youngest volcanic ground in the state: young basalt with pumice, cinder and ash soils around Bend, Redmond and Sisters, and thin soil over hard rock along the rims.

That ground drains fast and holds a slope differently from valley silt, so drainage layers and slope protection are chosen for free-draining volcanic material rather than for tight clay.

Jefferson County spans Central Oregon and the High Lava Plains along with the Cascade Range and Hood River Valley. Where it sits on the volcanic ground, the same free-draining pumice and ash conditions apply.

In Linn County, match the material to the ground. Minus rock compacts into a base over soft silt.

Clean rock drains where water collects. Rounded stone decorates, and riprap armors a bank.

Order 3/4 Minus for Your Linn County Project

3/4 minus is the base most Linn County ground calls for, because it compacts over soft valley silt and clay. Oregon Rock Supply delivers it by the ton, along with drain rock, river rock, sand and topsoil, to addresses across the county.

Order online and pick your delivery date at checkout.