Valley County, ID Gravel and Landscape Rock Delivery
Idaho Rock Supply brings gravel, stone and aggregate delivery in Valley County, ID to McCall, Cascade, Donnelly and Yellow Pine. Road mix is the base most ground here gets built on, and it is the first thing to sort out before anything else goes down.
Ground across the Central Idaho mountains and high valleys is thin and coarse over weathered granite, with deep outwash sand and gravel on the valley floors. That mix decides which material a drive, a pad or a drain actually needs.
Materials Delivered in Valley 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.
On public works plans in Idaho, base material is written as crushed aggregate in Type I and Type II, or as uncrushed aggregate. State highway work follows the ITD Standard Specifications, where Section 703.04 covers Aggregate for Untreated Base, Treated Base and Road Mix and carries the 3/4 inch minus gradation.
City, county and highway district work usually follows the Idaho Standards for Public Works Construction, Section 802 for crushed aggregate and Section 801 for uncrushed.
A homeowner asking for road mix and a contractor asking for 3/4 minus are asking for the same load.
Round rock, cobble and the sand and soil lines round out the list. Snake River Rock and Large River Rock cover decorative beds, dry creek beds and borders.
Washed Sand beds pavers and slabs, and Mason Sand handles brick and block work and paver joints.
Delivery Across Valley County
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 in one pile.
Each product page has a calculator. Use it to size the load before you order, since bulk material is sold by weight or by volume rather than by the bag.
Delivery covers McCall, Cascade, Donnelly and Yellow Pine, along with the rural approaches and outlying ground around them.
Ground Conditions Across Valley County
Thin, coarse soil over weathered granite is the pattern across the Central Idaho mountains and high valleys. Where that ground is shallow over bedrock, meltwater runs across the surface instead of soaking in.
Valley floors near the rivers carry a high water table through the spring. Subgrade that is still frozen pushes water up rather than taking it, which is when a base course starts to rut and break apart.
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 and debris into the drainages below.
The working season is the shortest in the state. Snow and frozen ground close out base and paver work from late fall until the ground dries in late spring, and the reliable window runs from early summer to early fall.
Winters here are long and hard, with deep snow and deep frost, and spring breakup softens and ruts gravel roads and drives as the frost comes out. Frost depth is set by the local building official, who also sets footing depth.
Choosing the Right Material
Gem County sits in the Treasure Valley, where old lake silt, sand and clay lie over basalt and hard caliche sits under thin desert soils on the benches. That ground holds water very differently from the coarse granitic soil here, so a base that drains well on one side may sit wet on the other.
Idaho County and Boise County both span more than one zone, and each includes the Central Idaho mountains and high valleys. Where the ground region matches, the material reasoning matches too.
Match the material to what the ground does. Road mix for a compacted base, drain rock where water has to move, rip rap where moving water hits a bank, and screened topsoil where the native ground is too thin to plant into.
Order Road Mix and Rock for Your Valley County Project
Start with the material that fits your ground and your job, then size the load on the product page calculator before you check out. Road mix, drain rock, chips, round rock and topsoil all deliver across Valley County.
Place your order online and a truck brings it to your site.