Bulk Gravel and Stone Delivery in Roosevelt County, MT
Montana Rock Supply brings gravel, stone and aggregate delivery in Roosevelt County, MT to your site by the ton. Start with crushed base course, the standard Montana base material, sold as 3/4 minus.
Ground here is glacial till over shale, heavy and slow to drain. Meltwater sits on subsoil that is still frozen, so the material under a drive matters as much as the surface.
Ground Conditions Across Roosevelt County
Across the Hi-Line and the northern glaciated plains, the ground is glacial till over shale. Clay, gravel, sand and silt left by the ice and by glacial lakes make much of it heavy and slow-draining.
Coulee and river-bottom alluvium cuts down through that till. Flat ground plus slow drainage means water stands where it falls.
The working season is short. Frost is in the ground from late autumn into spring, and compaction waits for it to come out.
Winters run cold, with long cold spells and chinook thaws that cycle the surface without taking the frost fully out until spring. Frost depth figures published across Montana run from about 36 to 60 inches, and the northern plains sit at the deep end of that.
The local building department sets footing depth.
Erosion follows the same pattern. Wind strips bare ground, sheet and gully erosion cuts the coulees, and banks get cut where water runs hard.
Plan a delivery around the thaw, not against it. A load tipped on ground that is still frozen cannot be worked until it comes out.
Materials Delivered in Roosevelt County
Crushed base course is the standard base material in Montana. It is a processed mix of crushed stone and fines that compacts into a hard, stable surface.
Montana specifies base material 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 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, 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.
Order 3/4 Crushed Base Course for driveways, shop pads, parking areas and shed bases. It is also the layer that goes under a road mix surface.
Below the base, Pit Run is unprocessed pit gravel. Use it for deep fill, raising grade and sub-base under a crushed base course, never as a finished driving surface.
For the surface of a drive or a county-style lane, Driveway Gravel is Montana road mix. It carries enough fines and clay binder to pack hard under a roller.
Where water needs to move, Washed Rock is the clean stone for French drains, curtain drains, foundation drains and downspout runs. Washing the fines out is the whole point.
For bedding and paths, Stone Screenings are crusher fines. They bed pavers and flagstone and pack into a firm pathway surface.
Rounded stone covers the decorative and drainage work. 3/8" Natural Pea Gravel suits walkways, play areas and dog runs.
Yellowstone River Rock fills decorative beds, borders and dry creek beds as the usual alternative to bark in a dry climate. Large River Rock handles dry creek beds, splash pads under downspouts and heavier erosion work.
For slope and outlet protection, Riprap armors stream banks, culvert outlets, coulees and ditches against spring runoff.
Sand and soil round out the list. Mason Sand serves brick and block work, paver joints and play sand.
Washed Sand levels and beds flatwork and pavers, and works as concrete sand. Top Soil is screened for lawns, grading and bed prep over thin or stony native ground.
Choosing the Right Material
Valley County shares this ground region, glacial till over shale across the Hi-Line and the northern glaciated plains. The ground is the same, so the base and drainage choices carry over.
Richland County and McCone County sit on different ground: bentonite-rich gumbo clay weathered off marine shale, with badlands, scoria beds and broken country, plus sand, gravel and cobble terraces along the Yellowstone, Missouri and Powder.
That difference matters. Gumbo clay swells and holds water, so a base there has to shed water rather than sit in it.
Heavy till drains slowly too, but it behaves differently under a load.
Pick by size and by job. Crushed base course compacts and carries a drive or pad.
Pit run fills deep and raises grade. Road mix surfaces a lane.
Washed rock drains. Screenings bed pavers and paths.
Match the stone to the water. Where runoff crosses a slope, riprap armors it.
Where water needs to leave a footing, washed rock gives it a path.
Delivery Across Roosevelt County
Order online and a dump truck tips the load on your site. Coverage runs across the county, including Wolf Point, Poplar, Culbertson, Brockton, Froid and Bainville.
Quantities are ordered by the ton or by the yard. Each product page has a calculator if you need to size a load.
Pick a delivery date at checkout. Time the drop for ground that has thawed and dried enough to work.
Order Gravel, Stone and Aggregate in Roosevelt County
Montana Rock Supply delivers bulk gravel, stone, sand and topsoil across Roosevelt County, from Wolf Point and Poplar to Culbertson, Brockton, Froid and Bainville. Choose your material, order by the ton or yard, and pick a delivery date at checkout.