Gravel, Stone and Soil for Johnson County, MO
Planning a driveway, a parking pad, a shed base or a drainage run? Missouri Rock Supply delivers gravel, stone and aggregate delivery in Johnson County, MO. Most jobs here start with base rock, the 1 inch dense-graded material Missouri quarries sell as type 5 base or type 1 base. Under it sits dense clay subsoil that drains slowly, so what you put down and how you build it up both matter.
Materials delivered in Johnson County
Base rock carries most of the work. It is crushed stone and fines, and it builds the load-bearing course under driveways, parking pads, shed bases and farm lanes. Type 7 is the coarser 1-1/2 inch grade when you want a heavier lift.
Washed stone is a separate family: 1 inch clean, 3/4 inch clean and clean rock all mean stone with no fines. Never use clean rock for base rock or crusher run. For decorative beds and dry creek beds, river rock, large river rock and Natural Pea Gravel cover most of it.
Choosing the right material
Johnson County sits in the West-central plains (Osage Plains) ground zone. Clay, silty clay and sandy clay over shale, limestone and sandstone, with dense, slow-draining clay subsoil under the flatter ground. Jackson County and Cass County share that same zone, so the ground next door is similar, and the material choice usually follows the project rather than the county line.
Lafayette County is the one that differs. It sits in the Northern Missouri glacial plains, silty loess over glacial clay till, with a tight claypan under the flat prairies. That subsoil drains worse than Johnson County's, so a base course there wants more clean stone in the drainage layer and firmer compaction before surfacing.
- Drive or farm lane: base rock first, then driveway gravel or road rock on top.
- Drainage run or French drain: 1 inch clean, drain rock or #4 crushed stone, never base rock.
- Paver or patio base: crusher run or screenings for bedding, washed sand for leveling.
- Slope or creek bank: rip rap sized for the water you expect.
Ground conditions across Johnson County
A base that is too thin shows up fast here. Clay soaks up little rain, so water runs off slopes and stands on flat ground, and it perches above the clay subsoil through winter and early spring. A thin base rock course over that ground pumps, ruts and loses its shape.
The fix is a compacted base built up in lifts on ground that has been shaped to drain, with the water sent somewhere. Fast runoff off clay slopes cuts rills and gullies in bare or graded ground, so seed or armor those slopes. Heavy storms also eat into creek banks, which is where rip rap earns its place.
Timing matters. Clay ground is often saturated from winter into spring, so late spring through fall is the easier window for base and driveway work. Frost is moderate here: January nights average below freezing and most days thaw, so the ground freezes and thaws repeatedly. Frost depth is set by the local building code, deeper toward Kansas City than at the southern end of the zone.
Delivery across Johnson County
Order online and choose a quantity by the ton or by the yard. If you are not sure which to pick, size the load with the calculator before you check out. A dump truck then delivers to the site and drops the material where you want it.
We deliver across the county, including Warrensburg, Knob Noster, Holden, Leeton, Kingsville, Chilhowee and Centerview. Pick your delivery date at checkout.
Size your load, then place the order
Start with the calculator to turn your area and depth into tons or yards, then order base rock, clean stone, sand or soil online and choose your delivery date. If you are building a drive, a pad or a drainage run in Johnson County, Missouri Rock Supply can get the right material to your site. Place your order when you are ready.