Do you deliver to Lemhi County?

Yes. Idaho Rock Supply delivers bulk gravel, stone, sand and soil across Lemhi County, including Salmon, Leadore, Carmen, Cobalt, Gibbonsville, North Fork and Shoup. You order online, choose a quantity by the ton or by the yard, and pick a delivery date at checkout. A dump truck then tips the load on site.

Should I order material by the ton or by the yard?

Either works, and the choice usually follows how you measured the job. Tons are a weight and yards are a volume. Each product page carries a calculator so you can size the load before checkout. If you already know the quantity you need, order it directly by the ton or by the yard.

Lemhi County Road Mix and Gravel Delivery, ID

Q: What is the difference between crushed stone and Natural Pea Gravel?

Crushed stone is angular, so the pieces knit together and stay where they are put. Chips and drain rock are crushed. Natural Pea Gravel is round and uncrushed, which is why it rolls underfoot and suits patios, dog runs and play areas rather than a drive surface. Idaho yards sell Natural Pea Gravel at 3/8 inch.

Idaho Rock Supply handles gravel, stone and aggregate delivery in Lemhi County, ID. Road mix is the base most ground here gets built on.

Central Idaho gives you the shortest working season in the state. Snow and frozen ground close out base and paver work from late fall until the ground dries in late spring, so the reliable window runs early summer to early fall.

Ordering inside that window keeps a load from sitting on frozen subgrade.

Materials Delivered in Lemhi County

Road mix is the local name for crushed base with the fines left in so it locks up under a roller. That is the base course under driveways, parking pads, shop floors and shed slabs.

A contractor ordering 3/4 minus is asking for the same load, and on public works plans it is written as crushed aggregate by type. Highway work follows the ITD Standard Specifications for Highway Construction, where Section 703.04 covers Aggregate for Untreated Base, Treated Base and Road Mix, and 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 for crushed aggregate and Section 801 for uncrushed aggregate. Those are how material is described in Idaho.

Washed stone covers the clean side of the list. Use 3/4" Crushed Stone for drive surfacing, pipe bedding and drainage where an angular rock that stays put is wanted.

Idaho says crushed rock far more often than crushed stone.

For water that has to leave, Drain Rock handles french drains and downspout runs. RipRap armors creek banks, culvert outlets and cut slopes against snowmelt and cloudburst runoff.

Railroad Ballast covers track beds and hard standing.

Sand and soil round out the order.

Mason Sand goes into brick and block work and paver joints. Top Soil and Garden Soil build lawns and raised beds over thin, stony ground.

3/8" Natural Pea Gravel is round and uncrushed, which is why it rolls underfoot where chips do not. It suits patios, dog runs and play areas.

Large River Rock takes the heavier decorative work, dry creek beds and borders.

Delivery Across Lemhi County

You order online and a dump truck tips the load on site in one pile. Pick the quantity by the ton or by the yard, and each product page carries a calculator if you need to size the load.

Choose a delivery date at checkout. Salmon, Leadore, Carmen, Cobalt, Gibbonsville, North Fork and Shoup all sit inside the delivery area.

Have the drop spot clear before the truck arrives. A bulk load arrives as one tipped pile, so the ground under it wants to be firm and reachable from the road.

Ground Conditions Across Lemhi County

Water is the driver here. Across the Central Idaho mountains and high valleys, coarse granitic and outwash ground drains fast where it is deep, but shallow soil over bedrock and subgrade that is still frozen send meltwater across the surface instead.

Valley floors near the rivers carry a high water table through the spring.

That changes what goes under a drive or a pad. Where the ground stays wet, a clean drainage layer matters more than a compacted base.

Where it drains fast, the base course is doing the work on its own.

Spring snowmelt and rain on snow scour creek banks and mountain roads. Stone Screenings washes out readily once it is disturbed, and burned slopes shed sediment into the drainages below them.

Riprap on a bank or a culvert outlet is slope protection against that runoff.

Frost in the highest valleys runs deep. Building officials in the high country use deeper figures than the 32 inches published for Blaine County, and the local building official sets footing depth.

Timing matters as much as depth. The reliable window is early summer to early fall.

Choosing the Right Material

Two neighbouring counties give useful comparisons. Custer County sits in the same Central Idaho mountains and high valleys, with thin, coarse soils over Idaho Batholith granite, glacial till around the valley heads and deep outwash sand and gravel on the valley floors.

That ground is the same as Lemhi County's, so the base and drainage choices carry over.

Clark County is different. It lies on the Upper Snake River Plain and the eastern farm valleys, where young basalt flows carry thin soil over them and wind-laid silt and dune sand sits across the plain.

That fine, wind-worked ground holds water differently from coarse granitic soil, so drainage and subbase choices do not transfer straight across.

Order Road Mix, Stone and Soil for Your Lemhi County Project

Idaho Rock Supply supplies the base, washed stone, sand and soil for drives, parking pads, shop floors, shed slabs, drainage runs and decorative beds across Lemhi County. Pick your material, size the load by the ton or by the yard, and order online for delivery on a date you choose.

Order Road Mix and Crushed Stone in Lemhi County, ID