Pulaski County, IL Shrink-Swell Risk

Pulaski County, IL's soil, for shrink-swell risk

Moderate

Pulaski County, IL: USDA's soil survey rates 52.7% of the county "Moderate" for shrink-swell potential (3.51% linear extensibility). 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.

What Pulaski County's reading doesn't cover

Two lots a mile apart in Pulaski County can carry different soil, even though they share one countywide reading. The real answer for one lot is still a site-specific geotechnical report, running about $1,000-$5,000 (typically near $2,700).

What it costs to find out, versus to ignore it

With Pulaski County, IL rating "Moderate", a geotechnical report is still worthwhile before a build, just less urgent than in a high-risk county. 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.

Where this sits nationally

Nationally, Pulaski County, IL is the 837-most-constrained of 3,085 rated counties for shrink-swell soil. Within Illinois alone it ranks 61 of 101. Pulaski County covers 199 square miles and counts 4,879 residents.

For contrast

Orleans Parish, LA carries this site's most-constrained reading. Orange County, VT and Gratiot County, MI 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

More of Illinois

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