Bastrop County, TX Shrink-Swell Risk
Shrink-swell potential in Bastrop County, TX
Moderate
Soil across 35.4% of Bastrop County, TX comes back "Moderate" in USDA's shrink-swell data, averaging 4.68% linear extensibility. Conventional foundations are the reasonable expectation here, with routine moisture-control practice rather than special engineering.
What this number does and doesn't tell you
This is a countywide, area-weighted figure across every soil survey map unit in Bastrop County, TX - never a reading for one specific parcel. The real answer for one lot is still a site-specific geotechnical report, running about $1,000-$5,000 (typically near $2,700).
Bastrop County: the real numbers
Bastrop 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.
Bastrop County's rank among Texas counties
Among the 3,085 rated counties on this site, Bastrop County, TX ranks 350 most-constrained nationally, and 87 of 253 within Texas. Bastrop County, TX is 888 square miles with a population of 114,931.
For contrast
Orleans Parish, LA carries this site's most-constrained reading. Hennepin County, MN and St. Martin Parish, LA 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 Texas
Every county in Texas is on this site, including Limestone County, TX and Swisher County, TX. The full underlying dataset is downloadable directly, one row per county.