Gravel, Stone and Soil for Treasure County, MT
Montana Rock Supply handles gravel, stone and aggregate delivery in Treasure County, MT, and the ground here decides what a base needs to be. Bentonite-rich gumbo clay swells when it wets up and cracks when it dries, so water sits on the surface instead of soaking away.
That is why crushed base course, usually ordered as 3/4 minus, carries so much of the work on drives, shop pads and parking areas around Hysham, Bighorn and Sanders. Order online by the ton or the yard and a truck tips the load on site.
Materials delivered in Treasure County
Base material in Montana is specified as crushed base course. The MDT Standard Specifications for Road and Bridge Construction cover it under Section 701.02.4, where grades are named by nominal top size.
Grade 5A runs 2 inch minus and Grade 6A runs 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, Crushed Base Course, 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.
Crushed base course is a compacted base for drives and pads. Pit run is unprocessed pit gravel for deep fill and raising grade, and it goes under a crushed base course or a road mix surface rather than on top as the finished driving surface.
Walkway Gravel gives garden paths a finer, walkable surface than a drive wants. Mason Sand serves brick and block work, paver joints and play sand.
Ground conditions across Treasure County
Work here follows dry ground. Spring breakup and heavy rain make gumbo roads impassable, and midsummer through early autumn is the dependable window for a delivery.
Across the Eastern plains, Missouri Breaks and badlands, the driver is gumbo. Bentonite clay swells and turns greasy as soon as it wets up, so water sits on the surface and unsurfaced roads go soft.
Cloudbursts run straight off into the coulees. That is a drainage problem before it is a strength problem, and it shapes how a base is built and where water is sent.
Erosion follows the same pattern across this part of the state: fast gully and rill cutting in shale and clay badlands, slumping along the Missouri Breaks, and bank scour on the big rivers.
Winters here are cold and dry with deep frost and wide day-to-night swings. Ground that thaws on a chinook afternoon and refreezes overnight heaves gravel roads and opens up drives.
Frost depth figures published across Montana run from about 36 to 60 inches, with eastern plains figures usually quoted at the lower end. The local building department sets footing depth.
Delivery across Treasure County
Montana Rock Supply delivers bulk material across Treasure County, including Hysham, Bighorn and Sanders. 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 a load before ordering. A dump truck then tips the load in one pile on site.
Gumbo ground is worth thinking about when you pick that date. A soft, greasy surface after rain is hard on any truck, so dry ground makes for an easier delivery.
Choosing the right material
Big Horn County and Rosebud County share Treasure County's ground region. All three sit on the same bentonite-rich gumbo clay weathered off marine shale, with badlands, scoria beds and broken ground.
Because the ground is the same, the material reasoning is the same. Crushed base course for a compacted base, pit run for deep fill, washed rock where fines need to wash out.
One difference worth weighing is the job itself. A drive that carries traffic wants a compacted base under it, while a garden path is happy with walkway gravel or crusher fines.
Where water collects, washed rock and riprap do work that a fines-bearing material cannot. Match the material to what the ground and the water are doing, and the rest follows.
Order gravel, stone and soil in Treasure County
Montana Rock Supply delivers crushed base course, pit run, road mix, washed rock, crusher fines, topsoil and more across Treasure County, from Hysham to Bighorn to Sanders. Order online by the ton or the yard, size the load with the calculator, and choose your delivery date at checkout.
Pick the material that fits your ground and your job, and a truck will tip it on site.