Gallatin County, MT Shrink-Swell Risk

Gallatin County's SSURGO shrink-swell reading

Low

In Gallatin County, MT, 74.9% of the surveyed soil carries a "Low" shrink-swell rating, 2.32% linear extensibility on average. Among the 3,144 counties on this site, that's the clean result: little shrink-swell movement, standard construction the likely outcome.

Before you rely on this for one address

Gallatin 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 Gallatin County.

Budgeting for Gallatin County, MT

Gallatin 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.

Gallatin County's rank among Montana counties

Among the 3,085 rated counties on this site, Gallatin County, MT ranks 1,708 most-constrained nationally, and 40 of 54 within Montana. The county spans 2,605 square miles, home to 126,984 people.

For contrast

Orleans Parish, LA carries this site's most-constrained reading. Stevens County, KS and Banks County, GA 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 Montana

Every county in Montana is on this site, including Madison County, MT and Big Horn County, MT. The full underlying dataset is downloadable directly, one row per county.