Connecting the data points... literally.
Connecting the data points... literally.
Infrastructure Grade
Infrastructure Report Card
4.9% of bridges in poor condition
Total Bridges
25,975
Poor Condition
1,284(4.9%)
Avg Bridge Age
56 yrs
Trend
Improving
| Metric | California | National Avg | Trend |
|---|---|---|---|
| % Poor Condition | 4.9% | 6.7% | Improving |
| vs. National Average | -1.8 pts | -- | -- |
| Average Bridge Age | 56 yrs | 48 yrs | -- |
| Good or Better | 13,766(53.0%) | -- | -- |
Grade Scale
Percentage of bridges in poor condition over time. The dashed line shows the national average for comparison.
Total Bridges
25,975
Poor Condition
1,284(4.9%)
Average Age
56 yrs
Daily Crossings
679.2M
Good or Better
13,766(53.0%)
These bridges have at least one major component rated "5" (Fair) — one step above the poor threshold. Sorted by daily traffic to highlight highest-impact structures at risk.
| Bridge | Location | Deck | Super | Sub | Daily Traffic |
|---|---|---|---|---|---|
| INTERSTATE 80 | Alameda County | 7 | 7 | 5 | 531,000 |
| ROUTE 5 | Orange County | 5 | 7 | 7 | 329,500 |
| INTERSTATE 5 | Orange County | 7 | 5 | 7 | 324,300 |
| INTERSTATE 5 | Orange County | 7 | 5 | 7 | 316,400 |
| I 5 | Orange County | 5 | 7 | 7 | 300,000 |
| INTERSTATE 110 | Los Angeles County | 5 | 7 | 7 | 300,000 |
| INTERSTATE 110 | Los Angeles County | 5 | 7 | 7 | 300,000 |
| INTERSTATE 110 | Los Angeles County | 5 | 7 | 7 | 300,000 |
| INTERSTATE 605 | Los Angeles County | 5 | 7 | 7 | 297,000 |
| U.S. HIGHWAY 101 | Los Angeles County | 5 | 7 | 7 | 296,000 |
| U.S. HIGHWAY 101 | Los Angeles County | 5 | 7 | 7 | 296,000 |
| U.S. HIGHWAY 101 | Los Angeles County | 5 | 7 | 7 | 296,000 |
| U.S. HIGHWAY 101 | Los Angeles County | 5 | 7 | 7 | 296,000 |
| INTERSTATE 5 | Los Angeles County | 7 | 7 | 5 | 294,907 |
| INTERSTATE 5 | Orange County | 7 | 5 | 7 | 294,400 |
The 10 bridges in poorest condition, ranked by lowest sufficiency rating.
over GARNETT CREEK
over MASONITE INDUSTRIAL ROAD
over BOULDER CREEK
over MANIX WASH
over SOUTH FORK CASPAR CREEK
over HUASNA RIVER
over DEL ROSA CHANNEL
over DUBAKELLA CREEK
over JACKSON CREEK
over DEER CREEK
States with similar infrastructure profiles, ranked by percentage of bridges in poor condition.
Grading: Grades are based on the percentage of bridges classified as "poor condition." A bridge is in poor condition when at least one major component (deck, superstructure, or substructure) is rated 4 or below on the NBI 0-9 scale.
Data Source: Federal Highway Administration (FHWA) National Bridge Inventory (NBI). Data is updated annually. BridgeStats is not affiliated with or endorsed by the FHWA.
Watchlist Criteria: Bridges with any component rated "5" (Fair) are one step from the poor threshold of 4 and are flagged for monitoring. These bridges are not yet in poor condition but may deteriorate without maintenance.