Gravel Delivery in Indiana

Limestone and dolostone show up at many of our Indiana center points. The state geologic map lists limestone and dolostone at the center points of Carmel, Fishers and Hammond. Bloomington's center point reads siltstone, dolostone, limestone and shale. Evansville's shows shale, sandstone, limestone, claystone and coal. South Bend differs, with shale and black shale at its center point and no limestone in the list.^[1]

Limestone and dolostone crush into hard, angular gray stone with plenty of fines. That mix packs into a dense, stable base and wears well as a top dressing. Shale and claystone are soft and flaky by comparison, and they break down when wet, so they make poor driveway stone. Where the rock maps show limestone, a stone load is likely to be crushed limestone, sold in sizes from #4 Crushed Stone down to #89 Crushed Stone.^[1]

Soil textures vary widely from city to city. The USDA survey reads silt loam at the center points of Carmel and Evansville, both moderately well drained, and silt loam at Fishers that is somewhat poorly drained. Fort Wayne's center point shows well drained loam. South Bend's reads loamy sand, excessively drained, which means water runs straight through it. Hammond's center point is sand, very poorly drained, which means the water table sits close to the surface there.^[2]

Ground height spans a few hundred feet. Carmel's center point stands 880 feet above sea level, Fishers 800 feet and Indianapolis 770 feet. Fort Wayne reads 760 feet and South Bend 720 feet. Hammond's center point is 590 feet, Bloomington's 540 feet and Evansville's 390 feet, the lowest in the group.^[3]

The Indiana Department of Transportation names its material for the layer under a pavement as Compacted Aggregate, No. 53, in Section 301 Aggregate Base of the INDOT Standard Specifications 2026. For a homeowner, the everyday choices are Road Base or Driveway Gravel for a packed layer, #57 Crushed Stone and 3/4" Crushed Stone for drives and drains, and #89 Crushed Stone or 3/8" Crushed Stone for walks and paver beds.^[4]

Rain is moderate to heavy across the list. The weather station used for Bloomington averages 49.4 inches of precipitation a year and Evansville's 47.8 inches. Indianapolis reads 44.6 inches, and the stations for Carmel and Fishers each read 44.4 inches. Hammond's station records 42.1 inches, South Bend's 40.9 inches and Fort Wayne's 39.5 inches. Silt loam stays soft for a while after a storm, so plan the drop spot on pavement when the yard is wet.^[5]

Cold days differ a lot between north and south. South Bend's station logs 133 days a year at 32 F or colder, Hammond's 126 and Fort Wayne's 124. Carmel and Fishers each log 122 days and Indianapolis 120. Bloomington's station reads 109 days and Evansville's only 68. Snow at the Fort Wayne station averages 33.6 inches a year, Hammond's 28.2 inches and Bloomington's 17.5 inches.^[5]

Winter loads need a cleared spot and a clear path in. Stone keeps fine through a freeze, but soil and sand clump when frozen and should wait for a thaw before spreading. Mark the driveway edges if snow hides them, so the driver does not run a heavy truck onto a soft lawn. Spring thaw is the softest season, when even well drained loam like Fort Wayne's center point reading can stay wet near the top.^[2]

Plan the route as you would for any large truck. Low limbs, overhead wires, mailboxes, tight cul-de-sacs and narrow gates can all limit where a truck can back in. A raised dump bed needs open space above it. On the very poorly drained sand mapped at Hammond's center point, keep the truck on pavement, since wet sand can give way under a full load.^[2]

Think about the next step when you choose the drop spot. A pile of stone is slow to move by wheelbarrow, so put it as near the work as firm ground allows. Keep it off septic lids, sprinkler heads and shallow pipes, which can crack under the weight of a truck or a load. In Bloomington, where the station records 49.4 inches of yearly precipitation, cover a soil or sand pile if rain is on the way.^[5]

Driveways are the most common order, and frost sets their design in the north. With 133 days at 32 F or colder at the South Bend station, water held in a base will freeze and lift it. Grade the soil, lay fabric on silt, and compact a thick layer of Road Base in lifts. Top it with #57 Crushed Stone or Driveway Gravel, crown the middle, and give the runoff a ditch or a swale to reach.^[5]

Drainage jobs depend on the ground. On the somewhat poorly drained silt loam at Fishers' center point, a French drain filled with Drain Rock or #57 Crushed Stone and wrapped in fabric pulls water from a wet yard or a basement wall. A dry well of the same stone takes the flow from a downspout. On loamy sand like South Bend's center point reading, water soaks in fast, and a drain is needed less.^[2]

Garden beds need different help on sand and on silt. Excessively drained loamy sand dries out quickly, so mix in Compost or Garden Soil to hold water, and keep a thick cover of Brown Shredded Mulch or Black Shredded Mulch on top. Silt loam holds water but crusts, and Compost loosens it. Topsoil finishes a graded lawn, and Red Mulch adds color to front beds. River Rock suits drip edges where mulch would wash away.^[2]

Patios and walkways follow the same layering. Pavers sit on compacted Road Base with a thin bed of Concrete Sand or Stone Dust Screenings. With 122 days at 32 F or colder at the Carmel station, a full base and a slope away from the house keep pavers from heaving. Paths can use Walkway Gravel, Pea Gravel or Decomposed Granite between edging. Mason Sand works for setting stone walls and for paver joints.^[5]

Rural and large jobs use the heavy grades. Crushed Concrete and Asphalt Millings make a firm, dark surface for a long lane or a machine pad. #4 Crushed Stone, 1-1/2" Crushed Gravel and Railroad Ballast form a stable first layer over soft ground. Riprap lines a ditch or a culvert outlet. Fill Dirt and Fill Sand raise low spots, Wood Chips cover play areas, and Playground Sand fills a sandbox. In Evansville, where the station logs only 68 freezing days a year, the same builds hold up with less frost damage.^[5]