Springfield, OR: what USGS's seismic model says

USGS's ASCE 7-16 seismic design model - the same standard building codes use - places Springfield 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 Springfield in the 85th percentile nationally for seismic hazard - higher than 85% of the 4,875 US cities USGS was checked against here.

How Springfield compares

USGS's underlying values for Springfield: 0.311g peak ground acceleration, 0.655g at short period, 0.378g at 1 second. Within Oregon alone, Springfield ranks 60 of 80 cities by seismic hazard - the 25th percentile in-state. Springfield has a population of about 61,182.

Retrofit economics for Springfield

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 Oregon 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 Oregon.

Insuring against this, not just retrofitting

A Springfield 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 Springfield's figures come from

Springfield'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 Springfield.