2024 Data · FHWA National Bridge Inventory
Bridge Health Dashboard
Bridge condition ratings across all 50 states — good, fair, and poor condition breakdowns with structurally deficient counts. Identify rehabilitation pipelines from FHWA National Bridge Inventory data.
613,325
Bridges Tracked
3.8%
Structurally Deficient
Annual
Updates
aechub.org · Federal Highway Administration · National Bridge Inventory 2024
Bridge Condition by State
2024 FHWA National Bridge Inventory data. Good = condition rating 7+, Fair = 5-6, Poor = 4 or below.
Total Bridges
613,325
All 50 states · 2024
Good Condition
37.1%
227,547 bridges
Fair Condition
53.5%
327,933 bridges
Poor Condition
9.4%
57,845 bridges
Struct. Deficient
23,355
Require priority attention
States with critical bridge conditions (≥12% poor)
Rhode Island (17.7%) · West Virginia (15.2%) · Pennsylvania (15.1%) · Connecticut (14.9%) · New York (14.4%)
National Overview
Overall Bridge Condition — United States 2024
Good (37.1%)Fair (53.5%)Poor (9.4%)
Top 20 States — % Poor Condition
2024 · FHWA NBIAll States
| State | Total | Condition | % Poor | Struct. Deficient | Status |
|---|---|---|---|---|---|
| Rhode Island | 758 | 17.7% | 62 | Critical | |
| West Virginia | 7,115 | 15.2% | 451 | Critical | |
| Pennsylvania | 22,513 | 15.1% | 1,412 | Critical | |
| Connecticut | 4,146 | 14.9% | 283 | Critical | |
| New York | 17,464 | 14.4% | 1,023 | Critical | |
| Vermont | 2,742 | 14.1% | 162 | Critical | |
| Kansas | 25,382 | 13.7% | 1,402 | Critical | |
| Oklahoma | 23,156 | 13.3% | 1,234 | Critical | |
| Hawaii | 1,134 | 12.8% | 58 | Critical | |
| Iowa | 24,383 | 12.8% | 1,374 | Critical | |
| Massachusetts | 5,136 | 12.8% | 298 | Critical | |
| Missouri | 24,567 | 12.8% | 1,215 | Critical | |
| Maine | 2,515 | 12.3% | 128 | Critical | |
| Alabama | 16,278 | 12.0% | 822 | Critical | |
| Illinois | 26,928 | 11.9% | 1,268 | Concerning |
Understanding Bridge Condition Ratings
Good (Rating 7-9)No problems noted. Bridges in good condition show no deterioration and require only routine maintenance. High-rated bridges are near-new or recently rehabilitated.
Fair (Rating 5-6)Some minor deterioration. Fair bridges are functioning but have elements that need monitoring. Many will require rehabilitation within the next 10-20 years.
Poor / Structurally Deficient (Rating ≤4)Significant deterioration requiring priority attention. Structurally deficient bridges may have load postings or restrictions. They are not necessarily unsafe but need rehabilitation or replacement.
Source: Federal Highway Administration, National Bridge Inventory 2024. Condition ratings based on FHWA element-level inspection standards. Structurally deficient designation follows 23 CFR 490.411 criteria. Data updated annually.