Creve Coeur's Seismic Design Category, explained

USGS's ASCE 7-16 seismic design model - the same standard building codes use - places Creve Coeur in Seismic Design Category D: 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. That puts Creve Coeur in the 82th percentile nationally for seismic hazard - higher than 82% of the 4,875 US cities USGS was checked against here.

How Creve Coeur compares

USGS's underlying values for Creve Coeur: 0.22g peak ground acceleration, 0.396g at short period, 0.15g at 1 second. Within Missouri alone, Creve Coeur ranks 40 of 135 cities by seismic hazard - the 71th percentile in-state. Creve Coeur has a population of about 18,533.

Retrofit economics for Creve Coeur

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 Missouri 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 Missouri.

Insuring against this, not just retrofitting

A Creve Coeur 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 Creve Coeur's figures come from

Creve Coeur'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 Creve Coeur.