| Name | Location | Status | Design | Year Built | Year Lost | Span Length | Total Length |
|---|
| Androscoggin River Bridge | Pedestrian walkway over Androscoggin River | Open to pedestrians only | Through truss | 1915 | -- | 165.0 ft. | 423.9 ft. |
| Bridge Street Bridge | Bridge Street over Connecticut River | Open to traffic | Steel arch | 1930 | -- | 132.9 ft. | 232.0 ft. |
| Bypassed Historic Bridge | Bypassed Historic over Upper Ammonoosuc River | Closed to all traffic | Through truss | 1852 | -- | 126.0 ft. | 131.9 ft. |
| Bypassed Historic Bridge | Bypassed Historic over Perry Stream | Closed to all traffic | Through truss | 1900 | -- | 45.9 ft. | 50.9 ft. |
| Bypassed Historic Bridge | Bypassed Historic over Androscoggin River | Closed to all traffic | Through truss | 1897 | -- | 130.9 ft. | 504.9 ft. |
| Bypassed Historic Bridge | Bypassed Historic over Connecticut River | Closed to all traffic | Deck truss | 1928 | -- | 140.1 ft. | 546.9 ft. |
| Clear Stream Bridge | NH 26 over Clear Stream | Open to traffic | Arch | 1929 | -- | 15.1 ft. | 15.1 ft. |
| Columbia Bridge Road Bridge | Columbia Bridge Road over Connecticut River | Open to traffic | Through truss | 1912 | -- | 132.9 ft. | 146.0 ft. |
| Connecticut River Bridge | US 2 over Connecticut River | Open to traffic | Through truss | 1950 | -- | 192.9 ft. | 403.9 ft. |
| Connecticut River Bridge | Bog Road over Connecticut River | Closed to all traffic | Through truss | 1893 | -- | 149.6 ft. | 151.9 ft. |
| Dead River Bridge | Northbound NH 16 over Dead River | Open to traffic | Arch | 1931 | -- | 13.1 ft. | 13.1 ft. |
| Diamond Pond Road Bridge | Diamond Pond Road over Mohawk River | Open to traffic | Arch | 1929 | -- | 69.9 ft. | 69.9 ft. |
| Fletcher Road Bridge | Fletcher Road over Connecticut River | Closed to all traffic | Through truss | 1876 | -- | 73.2 ft. | 88.9 ft. |
| Jefferson Notch Road Bridge | Jefferson Notch Road over South Branch Israel River | Open to traffic | Timber stringer | 1939 | -- | 35.1 ft. | 39.0 ft. |
| Jefferson Notch Road Bridge | Jefferson Notch Road over South Branch Israel River | Open to traffic | Timber stringer | 1939 | -- | 19.0 ft. | 24.9 ft. |
| Jefferson Notch Road Bridge | Jefferson Notch Road over South Branch Israel River | Open to traffic | Timber stringer | 1939 | -- | 21.0 ft. | 26.9 ft. |
| Jefferson Notch Road Bridge | Jefferson Notch Road over South Branch Israel River | Open to traffic | Timber stringer | 1939 | -- | 30.8 ft. | 37.1 ft. |
| Jefferson Notch Road Bridge | Jefferson Notch Road over South Branch Israel River | Open to traffic | Timber stringer | 1934 | -- | 20.0 ft. | 25.9 ft. |
| Mechanic Street Bridge | Mechanic Street over Israel River | Open to traffic | Through truss | -- | -- | -- | 94.2 ft. |
| Mohawk River Bridge | NH 26 over Mohawk River | Open to traffic | Arch | 1929 | -- | 48.9 ft. | 48.9 ft. |
| Mt. Orne Road Bridge | Mt. Orne Road over Connecticut River | Open to traffic | Through truss | 1911 | -- | 128.0 ft. | 266.1 ft. |