Order 3/4 Minus and Crushed Stone in Polk County, OR

Oregon Rock Supply delivers gravel, stone and aggregate delivery in Polk County, OR to Dallas, Monmouth, Independence, Falls City, Grand Ronde and Rickreall. If you know what you need for a drive, a drain or a bed, you can order it by the ton or the yard and have it tipped on site.

Start with 3/4 minus if you are building a base. Across the Willamette Valley and Portland Basin, the ground is often tight silt and clay that sheds winter rain slowly, so a compacting base matters more than a clean stone that lets water pass.

Ground Conditions Across Polk County

Rain in this part of Oregon falls mostly between November and March, and it lands on ground that does not take it away fast. Deep slackwater silt covers the valley floor, while the foothills run to red clay and silty clay loam.

That combination decides how you build. Silt and clay move under a load when they are wet, so a fines-bearing base that compacts and locks up is the right starting point under a drive, a pad or a shop floor.

Winter water also does the damage. Runoff across bare silt scours banks on the Willamette and its tributaries, and the steeper foothill slopes slide when they are saturated.

Timing is worth planning around too. Portland treats October 1 to April 30 as the wet weather season, when bare ground has to be stabilized within two days; from May 1 to September 30 you get seven days.

Winters here are mild and wet with only short freezes. Saturation and soft subgrade cause far more trouble than frost heave does, so plan for water before you plan for cold.

Materials Delivered in Polk County

3/4 minus, also called 3/4-0 or 3/4 inch minus, is the standard Oregon base. It is crushed rock graded from 3/4 inch down to fines, so it compacts and locks up under a driveway, a parking pad, a shop floor or a shed base.

Oregon specifies base aggregate by top size with a minus notation.

The Oregon Standard Specifications for Construction set dense-graded base aggregate in Section 02630.10 at 2 1/2 inch - 0, 2 inch - 0, 1 1/2 inch - 0, 1 inch - 0 and 3/4 inch - 0, and Section 00641.10 states that base aggregate is dense-graded unless otherwise specified.

Section 02630.11 covers open-graded aggregate, the clean material with the fines screened out.

Washed stone handles the water. Drain rock (also called round drain rock, washed drain rock or 1 1/2 clean) goes in French drains, curtain drains, footing drains, drywells and downspout runs.

3/4 clean, also called 3/4 open or 3/4 open-graded rock, is angular crushed rock with the fines screened out. It suits drainage trenches, retaining wall backfill, construction entrances and bridging soft, wet ground.

3/8 crushed rock, or 3/8 clean, is the smaller angular option for pipe bedding, tight drainage work and a fine topping over a compacted base.

Sand and soil round out an order. Washed Sand is washed so it drains, and it works for pipe bedding, leveling under slabs and flatwork, concrete mix and arena footing.

Garden Soil goes into raised beds and vegetable plots where native silt or clay is too tight to plant into, and Fill Dirt raises grade and backfills low ground before a base course goes on.

For decorative work, 3/8" Natural Pea Gravel covers paths, play areas, dog runs and drainage where a smooth rounded stone is wanted. Willamette River Rock fills decorative beds and borders, and Large River Rock handles dry creek beds and splash pads where smaller stone would wash out.

Slope and heavy drainage needs heavier stone. RipRap armors stream banks, culvert outlets, pond edges and cut slopes against winter runoff, and Oregon riprap is specified by class, from Class 50 up to Class 2000.

For a walkable path surface that stays put underfoot, Walkway Gravel is the finer choice.

Delivery Across Polk County

Bulk material arrives on a dump truck and is tipped in one pile on site. The driver does not place or spread the load, so the drop point is worth deciding before the truck arrives.

Ordering happens online. You choose a quantity by the ton or by the yard, and each product page has a calculator if you need to size the load.

Deliveries reach Dallas, Monmouth, Independence, Falls City, Grand Ronde and Rickreall and the surrounding parts of the county. Rural addresses and long driveways are worth flagging when you set the delivery point, so the pile lands where you can move it.

Choosing the Right Material

Polk County sits in the Willamette Valley and Portland Basin, on deep slackwater silt over the valley floor and red clay in the foothills. Marion County and Linn County share that same ground region, so the base and drainage choices that work here work there too.

Tillamook County is different. Its region is the Oregon Coast, and its ground runs to basalt headlands, uplifted marine sandstone and siltstone, dune sand and soft bluff material along the shore.

On ground like that, drainage and slope protection carry more of the job, and a compacting base still has to go down before anything sits on top. The stone sizes are the same; the ground beneath them is not.

Order Gravel, Stone and Soil for Your Polk County Project

Driveways, parking pads, shop floors, French drains, retaining wall backfill, stream bank armoring, raised beds and decorative beds all start with the right stone. Choose 3/4 minus for a compacting base, drain rock or 3/4 clean for water, and riprap where a slope needs protection.