Order Crushed Base Course and Crushed Stone in Valley County, MT
Montana Rock Supply handles gravel, stone and aggregate delivery in Valley County, MT. If you are building a drive, a shop pad or a shed base, crushed base course is the material to start with.
It is the standard Montana base, usually ordered by top size as 3/4 minus. The ground here decides how much of it a job needs.
Delivery across Valley County
Order online and pick your quantity by the ton or by the yard. Each product page has a calculator if you want to size the load before checkout.
Choose a delivery date at checkout and a dump truck tips the material on site. Bulk delivery covers Glasgow, Frazer, Nashua, Hinsdale, Fort Peck, Opheim, Glentana, Larslan, Richland and Vandalia.
The truck tips the load in one pile. Plan where that pile should sit before the truck arrives.
Materials delivered in Valley County
Crushed base course is crushed stone graded to a top size, and it packs into a firm base for drives, shop pads, parking areas and shed bases. Montana specifies base material as crushed base course.
The MDT Standard Specifications cover it under Section 701.02.4, where grades are named by nominal top size: Grade 5A at 2 inch minus and Grade 6A at 1 1/2 inch minus.
A 3/4 inch minus grade, 7A, was developed for MDT as pit sources for the larger sizes ran short. City and county work is more often written against Section 02235 of the Montana Public Works Standard Specifications.
County road standards call sizes out the same way, as 3 inch minus sub-base and 1 inch minus crushed base or top course.
Beyond base, the yard carries Walkway Gravel for garden paths and Shredded Mulch for beds and tree rings.
Shredded bark holds on slopes and in wind better than nuggets, which matters on open Montana ground. Mason Sand and Washed Sand cover brick and block work, paver joints and bedding under flatwork.
Ground conditions across Valley County
Across the Hi-Line and the northern glaciated plains, the ground is glacial till over shale. It is a mix of clay, gravel, sand and silt left by the ice and by glacial lakes, much of it heavy and slow-draining.
Coulee and river-bottom alluvium is cut down through it. Heavy till drains slowly, so a base over it needs a way for water to leave.
Flat ground and heavy till drain slowly, and snowmelt ponds on subsoil that is still frozen. A semi-arid year broken by a few intense summer storms adds to that.
Wind moves bare ground, sheet and gully erosion work the coulees, and banks cut where water runs high. Riprap and large round rock armor those banks and outlets.
The working season is short. Frost is in the ground from late autumn into spring, and compaction waits for it to come out.
Winters here bring deep frost, long cold spells, and chinook thaws that cycle the surface without taking the frost fully out until spring. The local building department sets footing depth.
Choosing the right material
Start with the job. A driveway gets crushed base course under a road mix surface, with washed rock in any drain beside it.
A patio or walkway gets crusher fines for bedding and a finer surface on top. A drain gets washed rock, because washing the fines out is the whole point.
Roosevelt County sits on the same ground region as Valley County: glacial till over shale, heavy and slow-draining, with coulee and river-bottom alluvium cut through it. The ground is the same, so the base and drainage choices are the same.
McCone and Garfield counties sit on bentonite-rich gumbo clay weathered off marine shale, with badlands, scoria beds and the broken ground of the Missouri Breaks. That clay swells and shifts with water, so a base there needs more attention to drainage than the till here.
Order crushed base course for your Valley County job
Crushed base course is the material to start with on Valley County ground, and it is available by the ton or by the yard. Pair it with road mix for a drive surface, washed rock for drainage, or crusher fines for bedding.
Order online from Montana Rock Supply, pick your quantity and your delivery date, and a truck will tip the load on site.