Greenbrier, AR: what USGS's seismic model says

Greenbrier carries Seismic Design Category D under USGS's ASCE 7-16 model. High seismic hazard - this is the category most of coastal California, the Pacific Northwest, and other active fault regions fall into. Code mandates significant seismic detailing and restricts irregular structural configurations. This is the category the Brace + Bolt scope (cripple-wall bracing, foundation bolting) is built for. Rank it against the rest of the country and Greenbrier sits at the 86th percentile for seismic hazard among 4,875 US cities.

Greenbrier by the numbers

USGS's underlying values for Greenbrier: 0.33g peak ground acceleration, 0.536g at short period, 0.168g at 1 second. Within Arkansas alone, Greenbrier ranks 16 of 68 cities by seismic hazard - the 78th percentile in-state. Greenbrier has a population of about 6,330.

Bracing and bolting: the actual cost

A full earthquake retrofit typically runs $5,000-$10,000 nationally (around $7,000 typical), driven mainly by house size and foundation type, not by Arkansas specifically. California's Earthquake Brace + Bolt grant, which covers a large share of this cost, is a California-only program and does not apply in Arkansas.

What this means for insurance

A Greenbrier homeowner cannot buy a standalone earthquake policy in most cases - it is added to an existing homeowners policy as an endorsement, so the place to start is a regular home-insurance quote.

Where Greenbrier's figures come from

Greenbrier's Category D and every number above trace to USGS's own ASCE 7-16 Design Maps service - see the methodology guide. See the category explainer for what Category D does and doesn't tell you about Greenbrier.