| Name | Location | Status | Design | Year Built | Year Lost | Span Length | Total Length |
|---|---|---|---|---|---|---|---|
| Crane Mill Stream Bridge | US 1 over Crane Mill Stream | Open to traffic | Through truss | 1936 | -- | 125.0 ft. | 130.9 ft. |
| East Machias River Bridge | US 1 over East Machias River | Open to traffic | Arch | 1902 | -- | 39.0 ft. | 139.1 ft. |
| East Machias River Bridge | ME 191 over East Machias River | Open to traffic | Pony truss | 1937 | -- | 98.1 ft. | 105.0 ft. |
| Narraguagus River Bridge | ME 1A over Narraguagus River | Open to traffic | Other | 1936 | -- | 86.0 ft. | 90.9 ft. |
| Narraguagus River Bridge | ME 1A over Narraguagus River | Open to traffic | Through truss | 1936 | -- | 125.0 ft. | 129.9 ft. |
| Pennamaquan River Bridge | Old County Road over Pennamaquan River | Open to traffic | Stone arch | 1901 | -- | 13.1 ft. | 34.1 ft. |