Gravel, Stone and Soil for Clark County, ID
Idaho Rock Supply handles gravel, stone and aggregate delivery in Clark County, ID for contractors and homeowners alike. Road mix is the base most of that work starts from, and it is the material to know by name in this part of Eastern Idaho.
Ground here is thin soil over young basalt, so a base course often sits on shallow dirt with rock close beneath it. That shapes what you order and how you plan the job.
Ground Conditions Across Clark County
Across the Upper Snake River Plain and the eastern farm valleys, young basalt flows sit close to the surface under thin soil. Water that gets into that ground has nowhere to go, so it gathers and softens whatever sits on top.
A base course over shallow rock shows the problem first as rutting and pumping after a wet spring. The base surface stays soft and the material works its way down instead of locking up.
The fix is a clean drainage layer under or beside the base, so water has a path away from the road surface. Drain rock is what carries that water off.
Winters here are the coldest sustained in settled Idaho, with hard freezes and a sharp heaving thaw in spring. Frozen ground stops compaction from late fall into early spring, so the dependable window for base and paver work runs from late spring into early autumn.
Spring runoff, wind moving dry field soil, and canal bank washouts during snowmelt all drive erosion in this part of the state. Rip rap armors the places where that water concentrates.
Materials Delivered in Clark 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 let it lock up under a roller.
Contractors order the same material as 3/4 minus or 3/4 inch minus, asking by size rather than by name. On public works plans it is written as crushed aggregate, called out as Type I or Type II under the Idaho Standards for Public Works Construction.
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 granular subbase. Those designations describe how material is specified locally.
Rip rap armors creek banks, culvert outlets, canal banks and pond edges against snowmelt and cloudburst runoff. Clean drain rock handles french drains, foundation drains and downspout runs where water needs to move.
For finishing work, Snake River Rock and Large River Rock cover decorative beds, borders and dry creek beds. Washed Sand beds pavers and slabs, and Top Soil or Garden Soil builds up ground too thin to plant into.
Delivery Across Clark County
You order online and choose a quantity by the ton or by the yard. Each product page has a calculator to help size the load before you order.
Pick your delivery date at checkout and a dump truck tips the material on site in one pile. Delivery covers Dubois, Spencer and the rest of the county.
Bulk loads arrive as loose material, so plan where you want the pile to land before the truck reaches you.
Choosing the Right Material
Lemhi County sits in Central Idaho, where thin, coarse soils weather over granite into sandy Stone Screenings, with glacial till around the valley heads. That ground is nothing like the shallow soil over basalt in Clark County, so base and drainage choices differ between the two.
Fremont County spans more than one zone, covering both the Upper Snake River Plain and the eastern farm valleys and the Central Idaho mountains and high valleys. Jefferson County shares Clark County's ground region outright, so the ground itself is the same.
Match the material to the job: road mix for a compacted base, drain rock or 3/4 inch crushed rock where water has to move, and chips or Natural Pea Gravel where the surface is walked on.
Order Road Mix and Aggregate for Your Clark County Project
Start with the calculator on the product page to size your load, then order by the ton or the yard and pick a delivery date at checkout. For building a base under a shop slab or topping a long rural approach, the right material is a short order away.
Place your order online and Idaho Rock Supply will have it on the way to your site.