Gravel, Stone and Soil Delivery in Bloomington, IN

Borden Group rock under the center point

The USDA soil survey maps the ZIP's center point as Water, a mapped surface of open water. The rock beneath it, by the geologic map, belongs to the Borden Group, a Mississippian unit of siltstone, dolostone, limestone and shale. Layered rock like this weathers into a mix of silty, clayey and stony soils on the land around it.^[1],[2]

Soils formed from siltstone and shale tend to be fine and slow to drain, while those over limestone can be stonier. On a yard built over ground like that, a test hole tells you which kind you have before you choose a base or a bed mix.^[2]

The center point sits 540 feet above sea level. Hilly ground in country like this means many lots have a slope, and runoff from uphill will cross a drive or a patio unless it is routed around.^[3]

Shale layers in a unit like the Borden Group can turn slick when wet, and siltstone breaks into thin, flat pieces. Neither makes a good drive base on its own. If a dig turns up broken rock of that kind, set it aside for fill in a low corner and build the drive from hauled-in crushed stone.^[2]

Rain and snow at Indiana Univ

Weather normals come from the NOAA station at Bloomington Indiana Univ, IN, about 8 miles away. It averages 49.4 inches of precipitation a year, a wet total that keeps ground damp for much of the year. Every base here should drain fast, and every slope should have a path for runoff.^[4]

The station averages 17.5 inches of snow and 109 days a year with a low of 32 F or colder. Snow melts by day and freezes by night, and water held in a base can lift loose stone over a winter. A crowned surface and clean edge drains keep the melt moving.^[4]

The median last spring freeze at the station is April 15. The median first fall freeze falls on October 26. Plant tender beds after the spring date, and top up stone and mulch before the fall date.^[4]

Heavy rain and regular snow add up to a lot of water moving across a yard each year. Gutters that empty onto a slope can carve a gully in a single season. Send each downspout into a buried line or a trench of Drain Rock that ends at a splash pad of River Rock well away from the house, and check the outlets each spring after the snow melts. On hilly lots, catching water near the top of the slope is easier than stopping it at the bottom.^[4]

A sloped drive that sheds water

On a hillside lot, water is the main enemy of a gravel drive. Shape the drive with a slight cross slope or a crown, and cut a ditch on the uphill side to catch runoff before it reaches the stone. Line the ditch with Drain Rock or River Rock, and set Riprap where it turns or empties.^[4]

Strip soft soil, lay a woven fabric if the subgrade is silty or clayey, and spread a coarse layer of 1-1/2" Crushed Gravel or #4 Crushed Stone. Add Road Base in compacted lifts and top it with 3/4" Crushed Stone or #57 Crushed Stone. On a slope, angular stone locks in place, and Pea Gravel would wash downhill in the first big storm.^[2]

On steep stretches, a few shallow water bars across the drive, built from compacted base and lined with stone, turn the flow off to the side before it gains speed.^[3],[4]

Snow on a sloped gravel drive is harder to manage than on a flat one. A plow or a blower set slightly high leaves a thin layer of snow and keeps stone on the drive. In spring, rake back any stone pushed to the edges and fill the washouts with Road Base before adding a top layer.^[4]

Census housing for ZIP 47401

The Census counts 21,594 housing units in ZIP 47401. Detached single-family houses make up 51 percent, and the ZIP's median build year is 1988. Owners live in 53 percent of the occupied homes.^[5]

Bloomington as a whole has 38,407 housing units. Only 36 percent of the city's homes are detached houses, and the citywide median build year is 1985.^[5]

The Indiana Department of Transportation calls its stone layer for state roads Compacted Aggregate, No. 53, under Section 301 Aggregate Base in the INDOT Standard Specifications 2026. That section governs state highway work.^[6]

The detached share in ZIP 47401, 51 percent, sits well above the city figure of 36 percent. Single-family lots bring the usual yard work: a gravel parking strip, a patio, terraced beds on a slope. Apartments and shared buildings bring a different kind of order, often a refill of mulch beds or a load of stone for a parking edge or a walk.^[5]

Gardens, terraces and wet spots

On hilly ground with heavy rain, terraces keep beds from washing away. Build low walls or timber edges across the slope and fill behind them with Garden Soil or Topsoil mixed with Compost. Cover the beds with Brown Shredded Mulch so rain soaks in instead of running off.^[3],[4]

Where water collects at the bottom of a slope, a dry creek bed of River Rock with Riprap at the outlet gives it a path. A trench of Drain Rock wrapped in fabric can take downspout water away from a house. Walkway Gravel and #89 Crushed Stone make firm paths between beds that drain well after rain.^[4]

With 17.5 inches of snow a year at the station, a gravel walk or step gets icy. A thin layer of 3/8" Crushed Stone gives boots grip and tracks indoors less than sand.^[4]

Soil over shale and siltstone can be thin and tight in places, so tree pits do best when dug wide rather than deep. Loosen the sides of the hole, mix Compost into the backfill, and finish with a ring of Wood Chips kept clear of the trunk.^[2]

Pea Gravel or crushed stone on a hillside path

A garden path on a slope is a common Bloomington project, and the stone choice matters more than on flat ground. Pea Gravel is smooth and rounded. It looks soft and natural and feels pleasant underfoot, but on a grade it rolls and creeps downhill, and a heavy rain can carry it to the bottom of the path in one storm.^[3],[4]

Crushed stone such as #89 Crushed Stone or Walkway Gravel has sharp faces that lock together. Packed over a thin layer of Road Base, it forms a firm tread that stays put on a slope. For steeper paths, build shallow steps from timber or stone and fill each tread with crushed stone. Keep Pea Gravel for flat areas such as a patio or a play space, where it can stay in its place.^[4]