Bridge Condition Trends in California
Between 2015 and 2025, bridge conditions in California have improved. The share of bridges rated poor went from 7.3% to 4.9% — a change of -2.4 percentage points.
Condition Summary
| Year | Total | Good | Fair | Poor | Poor % |
|---|---|---|---|---|---|
| 2015 | 25,318 | 13,327 | 10,134 | 1,857 | 7.3% |
| 2020 | 25,763 | 12,898 | 11,329 | 1,536 | 6.0% |
| 2025 | 25,975 | 12,239 | 12,452 | 1,284 | 4.9% |
Most Improved Counties in California
| County | Poor % (2015) | Poor % (2025) | Change |
|---|---|---|---|
| Madera | 29.0% | 9.6% | -19.4 pp |
| Yuba | 20.2% | 7.1% | -13.1 pp |
| Yolo | 11.4% | 4.4% | -7.0 pp |
| Napa | 10.9% | 5.0% | -5.9 pp |
| Plumas | 8.9% | 3.0% | -5.8 pp |
| Calaveras | 11.2% | 5.6% | -5.7 pp |
| Lassen | 13.0% | 7.4% | -5.6 pp |
| Ventura | 7.2% | 2.4% | -4.8 pp |
| Tulare | 7.7% | 3.0% | -4.8 pp |
| Sonoma | 10.0% | 5.2% | -4.7 pp |
Counties Where Conditions Worsened
| County | Poor % (2015) | Poor % (2025) | Change |
|---|---|---|---|
| Amador | 9.3% | 24.6% | +15.3 pp |
| Sutter | 5.2% | 13.2% | +8.0 pp |
| San Benito | 4.2% | 9.2% | +5.0 pp |
| San Francisco | 9.9% | 13.9% | +4.0 pp |
| San Joaquin | 5.8% | 9.6% | +3.8 pp |
| Nevada | 10.5% | 13.9% | +3.4 pp |
| Alpine | 3.3% | 6.1% | +2.7 pp |
| Solano | 4.0% | 6.4% | +2.5 pp |
| Santa Cruz | 14.3% | 16.5% | +2.2 pp |
| Inyo | 1.5% | 2.9% | +1.4 pp |