Madison County, MO Shrink-Swell Risk

Shrink-swell potential in Madison County, MO

Low

Soil across 93.8% of Madison County, MO comes back "Low" in USDA's shrink-swell data, averaging 1.4% linear extensibility. That's as favorable a county-level reading as this dataset produces - standard foundation practice, pending one lot's own geotechnical report.

What this number does and doesn't tell you

This is a countywide, area-weighted figure across every soil survey map unit in Madison County, MO - never a reading for one specific parcel. A local geotechnical report, typically $1,000-$5,000 (around $2,700 typical), is the only way to know what one lot in Madison County will actually do.

Madison County: the real numbers

Madison County's soil reading points toward standard foundation practice as the likely outcome, not the exception. A geotechnical report runs $1,000-$5,000, typically around $2,700. Foundation repair, if a specific lot turns out to differ from the county average, runs $5,000-$15,000.

Madison County's rank among Missouri counties

Among the 3,085 rated counties on this site, Madison County, MO ranks 2,619 most-constrained nationally, and 108 of 114 within Missouri. The county spans 494 square miles, home to 12,852 people.

See how another county compares

Orleans Parish, LA carries this site's most-constrained reading. Jefferson County, GA and Benson County, ND are worth a look for comparison.

How this reading is built, and its real limits · Moisture management: the cheap fix that works on any soil

Elsewhere in Missouri

Every county in Missouri is on this site, including Lewis County, MO and Douglas County, MO. The full underlying dataset is downloadable directly, one row per county.