Gravel, Stone and Soil for Gem County, ID
Idaho Rock Supply sells gravel, stone and aggregate delivery in Gem County, ID to two kinds of buyers. Contractors order road mix by the load for drives and pads, and homeowners order the same material for a shop floor or a shed slab.
Across the Treasure Valley and the western Snake River Plain, the ground runs to old lake silt, sand and clay with basalt beneath. That ground shapes what you put on top of it.
Materials delivered in Gem County
Road mix is the base course for driveways, parking pads, shop floors and shed slabs. It is crushed base with the fines left in, so it locks up under a roller.
Contractors also call it 3/4 road mix or 3/4 minus.
On public works plans in Idaho, the same material is written as crushed aggregate. State highway work follows the ITD Standard Specifications for Highway Construction, where Section 703.04 covers Aggregate for Untreated Base, Treated Base and Road Mix.
Section 703.11 covers aggregate for granular subbase.
City, county and highway district work is usually written to the Idaho Standards for Public Works Construction. Section 802 covers crushed aggregate in Type I and Type II, and Section 801 covers uncrushed aggregate.
Those are how material is described in Idaho.
Round rock and cobble cover decorative beds, borders and dry creek beds. Natural Pea Gravel suits patios and play areas, and screenings bed pavers and fill joints.
Delivery across Gem County
You order online and pick a delivery date at checkout. Quantities are ordered by the ton or by the yard, and each product page has a calculator to size the load.
A dump truck tips the load in one pile on site. That is the whole of the delivery: the truck arrives, the bed rises, and the material lands.
Idaho Rock Supply delivers across Gem County, including Emmett, Letha, Ola and Sweet. Rural approaches and long drives take the same bulk load as an in-town pad.
Ground conditions across Gem County
Across the Treasure Valley and the western Snake River Plain, caliche layers, clay lenses and shallow basalt perch water under yards and drives. Irrigation canals and laterals hold the summer water table high across the valley floor.
Summer cloudbursts run straight off crusted desert soil instead of soaking in. That runoff is what scours canal and ditch banks and moves dry bare soil in spring wind.
For a base, the consequence is drainage before surface. A fines-bearing material holds water where it sits, so clean drain rock belongs in the wet spots and road mix belongs where the ground is dry and stable.
The working season here is the longest in Idaho, running from an early spring thaw into late fall. Canal water running from spring to autumn governs when work along ditches and laterals can happen.
Cold nights and mild days give many shallow freeze and thaw cycles through the winter rather than one deep freeze. Frost depth is about 24 inches in Boise and the surrounding Treasure Valley cities, and the local building official sets footing depth.
Choosing the right material
Valley County sits on thin, coarse soils over the granite of the Idaho Batholith, which weather down to sandy Stone Screenings. Glacial till and moraine sit around the valley heads, with deep outwash sand and gravel on the valley floors.
That ground drains very differently from Gem County's lake silt, sand and clay over basalt. A base there sits on granular material, while here it sits over ground that can perch water.
Boise County spans more than one zone, reaching into both the Central Idaho mountains and high valleys and the Treasure Valley and the western Snake River Plain. Where it meets the valley, the ground matches Gem County's.
Ada County shares Gem County's ground region: old lake silt, sand and clay with basalt beneath, worked into irrigated silt loam on the valley floor. The ground is the same, so the material reasoning is the same.
Order road mix and aggregate for Gem County
Size the load on the product page calculator, then order by the ton or the yard and choose your delivery date at checkout. Idaho Rock Supply delivers bulk gravel, stone and soil across Gem County, from Emmett and Letha out to Ola and Sweet.
