6 bridges with vertical clearance data on SR-12 in New Hampshire. Lowest: 144.4ft.
| Clearance | Carries | Crosses | Location | Built | Map |
|---|---|---|---|---|---|
| 144.4ft | Nh 12 | Maple Avenue | 2.5 Mi Surry Tl | 1966 | Map |
| 184.1ft | Nh 12 | Nhrr(Abd) | 0.3Mi To Troy Center | 1957 | Map |
| 196.5ft | Nh 12 | Necrr | 4.9 Mi. From Walpole Tl | 1959 | Map |
| 225.1ft | Church Street | Connecticut River,Necrr | Vermont State Line | 1983 | Map |
| 225.1ft | Nh 12 | Nhrr(Abd) | .8Mi Westmoreland Tl | 1960 | Map |
| 326.8ft | Nh 12 | Nhrr(Abd) | .5 Mi E Westmoreland Tl | 1948 | Map |