Order Crushed Base Course and Crushed Stone in Carbon County, MT

Montana Rock Supply delivers gravel, stone and aggregate delivery in Carbon County, MT. Snowmelt and summer cloudbursts come off steep ground and hit dry soil fast, so water moves before it soaks.

Crushed base course is the material that answers that, and it is the one to start with.

Ground here runs from free-draining river gravel on the bottoms to slow clay and shale on the rims and benches. Both need a base that drains and packs.

Order online and a truck tips the load on site.

Delivery across Carbon 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 your delivery date at checkout and a dump truck brings the material to your site.

We deliver across Carbon County, including Red Lodge, Bridger, Joliet, Fromberg, Roberts, Belfry, Bearcreek, Edgar and Roscoe. The truck tips the load in one pile where you want it dropped.

From there it is yours to move and place.

Materials delivered in Carbon County

Start with the project. A drive or a shop pad wants a compacted base.

A drain wants clean washed stone. A bed wants something decorative.

Here is what each material is and what it is for.

Crushed base course is the base material for this county. 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.

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

Ground conditions across Carbon County

Carbon County spans more than one ground region. In the Yellowstone Valley and the Beartooth foothills around Bridger, Joliet, Fromberg and Roberts, you get river terrace sand, gravel and cobble, silty loam benches above them, and shale-derived clay on the rims and slopes.

In the mountain valleys around Red Lodge, gravelly alluvium and outwash sit on the basin floors, with clay-rich fill in places and thin stony soils over rock on the ranges.

Water behaves differently on each. Gravel takes water readily; clay-rich ground does not.

An under-built base on slow clay holds water and moves under load, so the base depth and the drainage layer both matter more there.

Erosion follows the same split. Spring high water scours banks and steep ground sheds runoff fast, while summer thunderstorms falling on dry ground overload the coulees.

Riprap and clean washed stone handle that work where a fines-bearing material would not.

Frost heave is a normal condition here, not only a spring event. Figures quoted for Billings and the surrounding plains run about 36 to 42 inches, with deeper figures on the higher ground toward Red Lodge.

The local building department sets footing depth.

The working season runs long on the valley floor, from early spring into late autumn, and shortens quickly as you climb toward the Beartooth front. Base, driveway and paver work around Red Lodge runs from late spring into early autumn.

Choosing the right material

Yellowstone County shares this county's ground region: river terrace sand, gravel and cobble, silty loam benches, shale-derived clay on the rims, and shallow stony ground where the Beartooth front comes down. The ground is the same, so the base and drainage choices are the same.

Stillwater County spans more than one zone, the Yellowstone Valley and the Beartooth foothills plus the southwest and south-central mountain valleys. Carbon County spans those same two.

Where the ground matches, the base choice matches.

Match the material to the job. A drive or pad takes crushed base course over pit run where grade has to come up.

A drain takes washed rock. A path takes crusher fines or walkway gravel.

A bed takes river rock or shredded mulch.

Order crushed base course for your Carbon County project

Crushed base course is the material this county's drives, pads and lanes are built on, and it is the one to start with. Order online by the ton or by the yard, pick your delivery date, and a truck tips the load on site.

Montana Rock Supply delivers across Carbon County, from Red Lodge to Bridger, Joliet, Fromberg and Roberts.