Does Sikeston, MO need an earthquake retrofit?

USGS's ASCE 7-16 seismic model can't even fit Sikeston onto its standard code table - ground motion here (peak ground acceleration 1.409g) is past what the table covers, which under §11.4.8 means a site-specific geotechnical study, not a standard letter grade. Rank it against the rest of the country and Sikeston sits at the 100th percentile for seismic hazard among 4,875 US cities.

Where Sikeston sits in Missouri

USGS's underlying values for Sikeston: 1.409g peak ground acceleration, 2.202g at short period, 0.791g at 1 second. Within Missouri alone, Sikeston ranks 2 of 135 cities by seismic hazard - the 99th percentile in-state. Sikeston has a population of about 16,062.

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 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 Sikeston 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 Sikeston's figures come from

Sikeston's Category rating 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 does and doesn't tell you about Sikeston.