Marshall County, IL Shrink-Swell Risk

Marshall County's SSURGO shrink-swell reading

Moderate

In Marshall County, IL, 62.9% of the surveyed soil carries a "Moderate" shrink-swell rating, 3.87% linear extensibility on average. A real but modest amount of movement - standard foundations usually hold up, but drainage and moisture control around the foundation still matter more than on low-risk soil.

Before you rely on this for one address

Marshall County's reading is an average across the whole county, not a promise about any one lot inside it. A site-specific soil report, usually $1,000-$5,000, is what an engineer would actually pull before designing a foundation on a lot in Marshall County.

Budgeting for Marshall County, IL

Marshall 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.

How Marshall County, IL compares

Among the 3,085 rated counties on this site, Marshall County, IL ranks 640 most-constrained nationally, and 38 of 101 within Illinois. Marshall County covers 387 square miles and counts 11,552 residents.

Before you act on this

Orleans Parish, LA carries this site's most-constrained reading. Upton County, TX and Nez Perce County, ID 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 Illinois

Every county in Illinois is on this site, including Hardin County, IL and Peoria County, IL. The full underlying dataset is downloadable directly, one row per county.