Stillwater County, MT Gravel and Landscape Rock Delivery

Montana Rock Supply handles gravel, stone and aggregate delivery in Stillwater County, MT, sold by the ton or by the yard and dropped at your site. Each product page carries a calculator, so you can size the load before you order.

Start with crushed base course, the standard Montana base material, usually ordered by top size as 3/4 minus. From there the rest of the yard runs by size, from riprap down to mason sand.

Materials Delivered in Stillwater County

Crushed base course is the base material for driveways, shop pads, parking areas and shed bases. In Montana it is specified as crushed base course, and the MDT Standard Specifications for Road and Bridge Construction cover it under Section 701.02.4.

Those grades are named by nominal top size: Grade 5A at 2 inch minus, Grade 6A at 1 1/2 inch minus, and a 3/4 inch minus grade, 7A, 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.

Below those sizes, 3/8" Crushed Stone covers fine drainage, trench bedding and a tight topping over a compacted base. 3/8" Natural Pea Gravel suits walkways, play areas and dog runs where rounded stone is wanted, and Large River Rock handles dry creek beds and splash pads under downspouts.

Sand and soil round out the list. Mason Sand goes to brick and block work and paver joints.

Washed Sand levels and beds flatwork and pavers, and doubles as concrete sand. Top Soil is sold screened for lawns, grading and bed prep over thin or stony native ground, and Fill Dirt handles bulk fill and backfill before a base course goes down.

Ground Conditions Across Stillwater County

Stillwater County spans more than one ground region, and the working season follows. On the Yellowstone Valley floor and the Beartooth foothills around Columbus, Park City, Absarokee and Reed Point, the season runs from early spring into late autumn, shortening quickly as you climb toward the Beartooth front.

Ground changes with elevation too. Along the Yellowstone and Clarks Fork you get river terrace sand, gravel and cobble, with silty loam bench soils above them.

That mix decides what a base has to do. Free-draining river gravel on the bottoms sits against slow clay and shale on the rims and benches, so drainage matters as much as the base itself.

Water comes from several directions: irrigation return flow, snowmelt off the Beartooths, and cloudburst storms that overload the coulees. Spring high water scours banks on the Yellowstone and Clarks Fork, and steep Beartooth ground sheds runoff fast.

Winters bring frequent thaw and refreeze rather than one long frozen spell, so frost heave in drives is a normal condition through the season. Published frost depth figures for Billings and the surrounding plains run about 36 to 42 inches, with deeper figures on the higher ground toward Red Lodge.

Delivery Across Stillwater County

Montana Rock Supply delivers bulk loads across Stillwater County, including Columbus, Park City, Absarokee, Reed Point, Fishtail, Rapelje and Nye. You order online, choose a quantity by the ton or by the yard, and pick a delivery date at checkout.

A dump truck tips the load on site in one pile. Plan where that pile should sit before the truck arrives, since the driver tips and leaves.

Choosing the Right Material

Yellowstone County shares Stillwater County's ground region, so the ground itself is the same: river terrace sand, gravel and cobble along the Yellowstone and Clarks Fork, silty loam bench soils above them, shale-derived clay on the rims and slopes, and shallow stony ground where the Beartooth front comes down.

The base and drainage choices carry over.

Carbon County spans more than one zone, covering both the Yellowstone Valley and Beartooth foothills and the southwest and south-central mountain valleys. Where its ground runs to gravelly alluvium and clay-rich basin fill, the drainage question changes, and clean washed rock matters more.

Golden Valley County sits on different ground entirely: deep silty and clayey prairie soils on the benches and across the Judith Basin, gravelly terraces along the Missouri, Judith and Musselshell, and shallow stony ground on the island ranges.

Clayey prairie soils hold water, so drainage stone and a base course that sheds water carry more weight there than they do on river gravel.

Order Gravel and Landscape Rock in Stillwater County

Montana Rock Supply delivers crushed base course, road mix, washed rock, crusher fines, river rock, riprap, sand, topsoil and fill across Stillwater County, from Columbus and Park City to Absarokee, Reed Point, Fishtail, Rapelje and Nye.

Choose your material, size the load by the ton or yard, and pick a delivery date at checkout to get your order on the way.