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.

CountyGradeScorePoorPoor TrafficScour-CriticalAvg Age
Cheshire CountyF5511.3%65,301/day865 yrs
Strafford CountyD679.6%135,097/day355 yrs
Merrimack CountyD678.3%244,642/day1059 yrs
Grafton CountyD687.9%111,914/day1959 yrs
Hillsborough CountyC728.1%210,015/day1253 yrs
Coos CountyC735.3%5,690/day961 yrs
Sullivan CountyC755.7%6,673/day562 yrs
Carroll CountyC765.2%2,051/day860 yrs
Rockingham CountyB817.1%86,649/day548 yrs
Belknap CountyB824.5%18,869/day255 yrs