Order 21AA Limestone and Crushed Stone in St. Clair County, MI

Michigan Rock Supply handles gravel, stone and aggregate delivery in St. Clair County, MI. If you are building a driveway, the material most crews here reach for first is 21AA limestone. It packs hard on the flat, clay-heavy ground that covers most of the county.

That ground drains slowly. Water stands in low spots after snowmelt and heavy rain, so what sits under a drive matters as much as what you see on top. Order online, pick your quantity, and a dump truck brings it to the site.

Delivery across St. Clair County

You order online, choose a quantity by the ton or the yard, and confirm a delivery date at checkout. If you are unsure how much you need, the calculator sizes the load from your project measurements.

A dump truck delivers to the site and places the material where you ask. From Port Huron and Fort Gratiot up through Marysville, St. Clair, Marine City and Algonac, and inland to Yale, Capac, Memphis, Emmett and Allenton, the truck reaches the job.

Have the drop spot clear before the truck arrives. Think about overhead wires, low branches and soft ground that a loaded truck should not cross.

Materials delivered in St. Clair County

Match the material to the job. Here is what fits the work most people are doing around the county.

21AA limestone is the base most jobs start with. Order it for a new drive, a parking pad, or a pole barn and shed base.

For a hard-packing unpaved drive, 22A road gravel is the other class worth knowing. It is a dense-graded mix with a smaller top size, and it is not a drainage stone.

For water, use clean washed stone instead. 3/4" Crushed Stone and #57 Stone both work in drainage beds and French drains. Stone Screenings bed pavers, flagstone and patios.

Topsoil, sand and mulch round out most orders. Top Soil and Garden Soil handle lawns and beds; Mason Sand serves brick, block and paver joints.

Ground conditions across St. Clair County

St. Clair County sits on a flat former glacial lake bed of clay, silty clay and clay loam, crossed in places by sandy beach ridges, low dunes and sand channels. Most of the ground is poorly drained.

That matters under a driveway or patio. Clay holds water instead of passing it, so an under-built base softens and ruts. Build the base thick and add a drainage layer where water collects.

Spring snowmelt and heavy rain on flat, slow-draining clay leave water standing in low spots. Much of the land relies on ditches and tile drains. Streams and ditches on the flat lake plain rise fast after rain and snowmelt and scour their banks.

High water, storms and ice erode the Great Lakes shoreline. RipRap armors that ground against the waves.

Base, driveway and paver work runs from the spring thaw into late fall. Frozen ground stops compaction in winter, and seasonal weight restrictions, known as frost laws, limit heavy trucks on many roads during the spring thaw. Plan your delivery around that window.

Freeze-thaw hits every winter and spring. As frost comes out of the ground, water is trapped in the soaked soil, so roadbeds, gravel drives and thin bases soften and rut. Frost depth is 42 inches under the Michigan Residential Code.

Choosing the right material

Ground next door is not the same ground. To the north, Sanilac County sits in the Thumb on the same flat former glacial lake bed of clay, silty clay and clay loam, crossed by sandy beach ridges, low dunes and sand channels, and mostly poorly drained. The ground is similar, so the material choice is too. Base and drainage orders there look much like St. Clair County orders.

Macomb County to the south spans more than one zone, part Southeast lake plain and part Southern Lower Peninsula moraines and till plains. Where that moraine ground is sandier and better drained, a base needs less drainage help than the clay here.

Lapeer County to the west sits on Southern Lower Peninsula moraines and till plains, a patchwork of loamy and clay loam till, sandy and gravelly moraines and outwash, and wet muck or peat in low spots. Those wet pockets call for drainage stone, while the sandier rises pack differently than the flat clay here.

Order 21AA limestone for your St. Clair County project

21AA limestone is the base most work in St. Clair County starts with, and the right stone for drainage, patios and beds follows from there. Michigan Rock Supply delivers bulk gravel, stone, sand and topsoil to job sites across the county. Size your load online, pick a delivery date, and place your order.