Bridge Condition Trends in Michigan
Between 2015 and 2025, bridge conditions in Michigan have improved. The share of bridges rated poor went from 11.4% to 11.0% — a change of -0.4 percentage points.
Condition Summary
| Year | Total | Good | Fair | Poor | Poor % |
|---|---|---|---|---|---|
| 2015 | 11,086 | 4,689 | 5,125 | 1,264 | 11.4% |
| 2020 | 11,271 | 4,193 | 5,859 | 1,219 | 10.8% |
| 2025 | 11,397 | 3,778 | 6,369 | 1,250 | 11.0% |
Most Improved Counties in Michigan
| County | Poor % (2015) | Poor % (2025) | Change |
|---|---|---|---|
| Mason | 21.5% | 6.1% | -15.5 pp |
| Missaukee | 25.6% | 10.3% | -15.4 pp |
| Delta | 14.3% | 0.0% | -14.3 pp |
| Emmet | 16.1% | 2.6% | -13.5 pp |
| Marquette | 24.6% | 12.9% | -11.7 pp |
| Kalkaska | 16.7% | 6.7% | -10.0 pp |
| Ingham | 21.3% | 12.4% | -8.8 pp |
| Newaygo | 17.5% | 9.1% | -8.4 pp |
| Luce | 21.4% | 14.3% | -7.1 pp |
| Cass | 22.0% | 15.1% | -6.9 pp |