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Stable CSVs, refreshed with each inventory vintage
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
Every number on this site, as stable CSV downloads. Free to use with attribution; the underlying inventory is public domain.
bridge-conditions-by-state.csv
Good/Fair/Poor bridge counts per state, with poor percentage.
| Column | Meaning |
|---|---|
state | state name |
bridges | inventoried bridges |
good | |
fair | |
poor | |
poor_pct |
bridge-conditions-by-county.csv
Good/Fair/Poor bridge counts for every U.S. county.
| Column | Meaning |
|---|---|
state | |
county | |
bridges | |
good | |
fair | |
poor | |
poor_pct |
poor-bridges.csv
Every bridge rated poor in the current inventory: location, year built, traffic, and component ratings.
| Column | Meaning |
|---|---|
state | |
county | |
structure_number | NBI id |
facility | road carried |
feature | what it crosses |
year_built | |
adt | avg daily traffic |
deck | rating 0-9 |
superstructure | |
substructure | |
culvert | |
lat | |
lon |
Source: FHWA National Bridge Inventory, 2025 vintage.