Idaho County, ID Gravel and Landscape Rock Delivery
If you are building a driveway, setting a patio base or running drainage, Idaho Rock Supply handles gravel, stone and aggregate delivery in Idaho County, ID. Most of that work starts with road mix, the crushed base Idaho yards sell with the fines left in.
Ground here is not one thing. Windblown loess lies deep over basalt in the prairie and canyon country, while the mountain valleys carry thin, coarse soil over granite.
Both change what you put under a drive or a slab.
Materials Delivered in Idaho County
Road mix, also called 3/4 road mix or 3/4 minus, is crushed base with the fines left in so it locks up under a roller. It goes under driveways, parking pads, shop floors and shed slabs.
State highway work writes it to ITD Section 703.04, and city, county and highway district jobs usually call it crushed aggregate Type I or Type II under Section 802.
Below road mix, pit run is unprocessed gravel straight from the pit, rock and fines at whatever sizes come out. It works as sub base, structural fill and for raising grade, never as a finished surface.
For water, drain rock is clean angular rock for french drains, foundation drains, drywells and septic drainfields. 3/4" Crushed Stone surfaces drives and beds pipe where you want rock that stays put.
Around the yard, 3/8" Natural Pea Gravel suits patios, dog runs and play areas, and it is round, so it rolls underfoot where chips do not. Snake River Rock covers decorative beds and dry creek beds.
Choosing the Right Material
Valley County and Adams County sit on the same ground region as Idaho County's mountain valleys: thin, coarse soil over Idaho Batholith granite that weathers to sandy Stone Screenings, with glacial till near the valley heads. The ground is the same, so the same base and drainage choices carry over.
Nez Perce County is different. It lies on deep windblown loess over Columbia River basalt, the same ground as the prairie and canyon country around Grangeville and Cottonwood.
Silt loam over loess seals under rain and sheds water rather than taking it in.
On that ground, runoff moves across the surface and perches where loess meets basalt. A clean drain rock layer matters more there than it does on coarse granitic ground that already drains fast.
Ground Conditions Across Idaho County
Idaho County spans two ground regions. In the prairie and canyon country around Grangeville, Cottonwood, Kooskia and Ferdinand, deep loess lies over basalt, and canyon roads, culverts and creek banks scour under spring runoff and summer cloudbursts.
In the mountain valleys around Riggins, Elk City and Pollock, thin coarse soil over granite drains fast where it is deep. Where soil is shallow over bedrock, meltwater crosses the surface instead, and valley floors near the rivers carry a high water table through spring.
Working seasons differ too. Sticky loess mud through the wet months is the constraint on the prairie, and hauling and compaction go best from late spring through fall.
The mountain valleys have the shortest working season in the state, with base and paver work closing out from late fall until the ground dries.
Frost depth is set by the local building official, not by a statewide figure. Long mountain winters and heavy spring breakup soften and rut gravel roads and drives as the frost comes out.
Delivery Across Idaho County
Order online and a dump truck tips your load on site. Quantities are ordered by the ton or by the yard, and each product page has a calculator to help you size the load before you check out.
Delivery covers Grangeville, Cottonwood, Kooskia, Riggins, Elk City, Ferdinand, Stites, White Bird, Greencreek, Kamiah, Lucile and Pollock. Pick your delivery date at checkout.
Order Road Mix and Aggregate for Your Idaho County Job
Start with the job in front of you: a drive, a pad, a drainage run. Pick the material, then size the quantity by the ton or the yard with the calculator on the product page.
Choose your delivery date at checkout and Idaho Rock Supply brings the load to your site.