Bulk Aggregate Delivery Across Fremont County, ID
Idaho Rock Supply brings gravel, stone and aggregate delivery in Fremont County, ID to the driveway, pad or drainage run you are planning. If you are building a base under a shop floor or a parking pad, road mix is the load that does the work.
Fremont County spans two very different grounds, from the farm valleys around St. Anthony and Ashton to the mountains above Island Park.
That range changes what sits under your project and how water moves through it.
Ground Conditions Across Fremont County
Start with water, because that is what decides the base under a drive or a footing here. On the upper Snake River Plain and the eastern farm valleys, basalt sits close to the surface and leaves water nowhere to go.
Drives and footings on that ground sit on thin soil over rock. Canal seepage and heavy spring irrigation lift the water table under low farmed ground, so drainage has to be planned rather than assumed.
In the mountain valleys and high country, coarse granitic and outwash ground drains fast where it is deep. Shallow soil over bedrock and subgrade that is still frozen send meltwater across the surface instead.
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.
Winter closes the working season early. Frozen ground stops compaction from late fall to early spring, and the dependable base and paver window runs from late spring into early autumn.
In the highest valleys the window is shorter still, from early summer to early fall.
Frost drives the heaving thaw you see each spring. About 30 inches is the figure commonly used at Idaho Falls and through the upper Snake River towns, and the local building official sets footing depth.
Materials Delivered in Fremont County
Road mix is the base course under driveways, parking pads, shop floors and shed slabs. Idaho yards call crushed base with the fines left in road mix because those fines lock the material up under a roller.
Ask for it as 3/4 road mix or as 3/4 minus and you get the same load.
On public works plans the same material is written as crushed aggregate, called out by Type I or Type II rather than by a class number.
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, 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 there covers crushed aggregate in Type I and Type II, and Section 801 covers uncrushed aggregate.
Those are how material is described in Idaho, nothing more.
Delivery Across Fremont County
You order online, choose a quantity by the ton or by the yard, and pick a delivery date at checkout. Each product page has a calculator if you want to size the load before you order.
A dump truck then tips the load on site in one pile. Have the drop spot clear and reachable before the truck arrives, and keep the pile where you want the material to sit.
Delivery covers St. Anthony, Ashton, Teton, Newdale and Island Park, along with the rural ground in between.
Mountain addresses and long rural approaches are worth flagging when you choose your date.
Choosing the Right Material
Neighbouring Teton County sits on a different ground than much of Fremont County. It runs to thin, coarse soils over the granite of the Idaho Batholith that weather down to sandy Stone Screenings, with glacial till and moraine around the valley heads.
That means a base there often needs to handle fast-draining granitic ground, where a fines-bearing road mix is what ties a drive surface together. On Fremont County's plain side, thin soil over basalt and a high spring water table point the other way, toward clean drain rock under the base.
Madison County and Jefferson County share the same upper Snake River Plain and eastern farm valley ground as Fremont County's plain side. The ground is the same, so the material choices carry across without a change.
Pick road mix for anything that takes a compacted base. Pick drain rock or 3/4 inch crushed rock where water has to move.
Pick topsoil or garden soil where the native ground is too thin or too stony to plant.
Common Questions About Fremont County Aggregate
What is the difference between topsoil and fill dirt?
Topsoil is screened and clean, and it goes on top where you are growing something, such as a lawn or a planting bed. Fill dirt is structural fill for backfill and raising grade, bringing a low spot up before a base course goes over it.
Fill dirt is not a growing medium.
What is road mix and what is it used for in Fremont County?
Road mix is crushed base with the fines left in, which is why it locks up under a roller. It is the base course under driveways, parking pads, shop floors and shed slabs.
Idaho yards also call it 3/4 road mix, road base or 3/4 minus, and it is the same load under any of those names.
How deep should a gravel driveway base be in Fremont County?
The right depth depends on your ground, your drainage and what the drive has to carry, so there is no single figure that fits every site. Frost heave and spring thaw both affect how a base performs here.
The local building official sets footing depth, and each product page has a calculator to size your load.
Order Road Mix, Drain Rock and Topsoil in Fremont County
Idaho Rock Supply delivers base, drainage stone, sand and soil across Fremont County, from driveways and shop pads to french drains and bed prep. Choose your material by the ton or the yard, size the load with the calculator, and pick your delivery date at checkout.