Order Crushed Base Course and Crushed Stone in Petroleum County, MT
Montana Rock Supply delivers gravel, stone and aggregate delivery in Petroleum County, MT. Start with crushed base course, the standard Montana base material.
Clay subgrades here soften as soon as they wet up. Spring snowmelt runs across ground still frozen underneath, and that water has to go somewhere.
Delivery across Petroleum County
Order online and pick a quantity by the ton or by the yard. Each product page has a calculator to help size the load.
Choose a delivery date at checkout. A dump truck then tips your material on site in one pile.
Bulk delivery covers Winnett, Teigen and the surrounding county ground. Loads arrive by dump truck and tip in a single pile where the truck can reach.
Materials delivered in Petroleum County
Match the material to the job. A driveway, a patio and a drain each want something different.
Crushed base course is the base material for drives, pads and parking. Montana specifies base material as crushed base course under MDT Standard Specifications Section 701.02.4, where grades are named by nominal top size.
Grade 5A is 2 inch minus and Grade 6A is 1 1/2 inch minus. A 3/4 inch minus grade, 7A, was developed as pit sources for the larger sizes ran short.
City and county work is 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 a drive, a shop pad or a parking area.
For drainage, washed rock is the clean option. Washed Rock suits French drains, curtain drains, foundation drains and downspout runs.
For a decorative bed, river rock is rounded river-washed stone, the usual alternative to bark in a dry climate. Yellowstone River Rock works in beds, borders and dry creek beds.
For finer drainage and trench bedding, 3/8" Crushed Stone gives a tight topping over a compacted base. For walkways and play areas, 3/8" Natural Pea Gravel is rounded stone.
Ground conditions across Petroleum County
Across the Central Montana benchlands and island ranges, soils run deep, silty and clayey on the benches. Gravelly terraces sit along the river corridors, and the island ranges carry shallow stony ground.
Clay subgrades soften as soon as they wet up. An under-built base over that ground moves and ruts, so the base course has to carry the load.
Spring snowmelt runs across ground that is still frozen underneath. Heavy summer thunderstorms on open benchland add to it.
Wind erosion works on open farmland, and silt and clay slopes gully. Bank cutting is a factor along the river corridors.
Work runs from breakup into autumn. The benchland dries out quickly once spring runoff is past.
Cold inland winters are cut by chinooks, so the ground freezes hard, thaws and refreezes repeatedly. Gravel roads soften and rut every time it cycles.
About 42 inches is the frost depth figure commonly used in Great Falls, with deeper figures in the ranges. The local building department sets footing depth.
Choosing the right material
Garfield County ground differs from Petroleum County ground. It is bentonite-rich gumbo clay weathered off marine shale, with badlands, scoria beds and broken Missouri Breaks ground.
That gumbo clay behaves differently from the silty and clayey prairie soils on the benches here. It changes what a base course has to do.
Musselshell County and Fergus County share the Central Montana benchlands and island ranges ground region. The ground there is the same as it is here.
For a driveway, order crushed base course for the base and road mix for the surface. For a patio, crusher fines bed the pavers and washed sand levels under flatwork.
For a drain, washed rock keeps the fines out. Riprap arms coulee banks and culvert outlets against spring runoff.
Order crushed base course for your Petroleum County project
Crushed base course is the standard Montana base material, and it is the right start for a drive, a pad or a parking area in Petroleum County. Order online by the ton or by the yard, size the load on the product page calculator, and pick your delivery date at checkout.
Montana Rock Supply tips your load on site.