New Hampshire County Bridge Report Cards
Compare county Bridge Condition Exposure Scores in New Hampshire by condition, traffic exposure, scour-critical bridges, average age, and data completeness. View the scoring methodology.
| County | Grade | Score | Poor | Poor Traffic | Scour-Critical | Avg Age |
|---|---|---|---|---|---|---|
| Cheshire County | F | 55 | 11.3% | 65,301/day | 8 | 65 yrs |
| Strafford County | D | 67 | 9.6% | 135,097/day | 3 | 55 yrs |
| Merrimack County | D | 67 | 8.3% | 244,642/day | 10 | 59 yrs |
| Grafton County | D | 68 | 7.9% | 111,914/day | 19 | 59 yrs |
| Hillsborough County | C | 72 | 8.1% | 210,015/day | 12 | 53 yrs |
| Coos County | C | 73 | 5.3% | 5,690/day | 9 | 61 yrs |
| Sullivan County | C | 75 | 5.7% | 6,673/day | 5 | 62 yrs |
| Carroll County | C | 76 | 5.2% | 2,051/day | 8 | 60 yrs |
| Rockingham County | B | 81 | 7.1% | 86,649/day | 5 | 48 yrs |
| Belknap County | B | 82 | 4.5% | 18,869/day | 2 | 55 yrs |