| Name | Location | Status | Design | Year Built | Year Lost | Span Length | Total Length |
|---|---|---|---|---|---|---|---|
| Allds Street Bridge | Allds Street over Salmon Brook | Open to traffic | Stone arch | 1892 | -- | 29.9 ft. | 36.1 ft. |
| Antrim Road Bridge | Antrim Road over Contoocook River | Open to traffic | Arch | 1929 | -- | 107.9 ft. | 144.0 ft. |
| Baldwin Street Bridge | Baldwin Street over BMRR | Open to traffic | Timber stringer | 1935 | -- | 23.0 ft. | 73.2 ft. |
| Bartlett Hill Road Bridge | Bartlett Hill Road over Piscataquog River | Open to traffic | Timber stringer | 1930 | -- | 24.0 ft. | 26.9 ft. |
| Blood Brook Bridge | NH 101 over Blood Brook | Open to traffic | Stone arch | 1927 | -- | 16.1 ft. | 20.0 ft. |
| BMRR Bridge | Abandoned BMRR over Antrim Road | Open to traffic | Timber stringer | 1930 | -- | 17.1 ft. | 19.0 ft. |
| Boglie Brook Bridge | NH 136 over Boglie Brook | Open to traffic | Stone arch | 1901 | -- | 17.1 ft. | 22.0 ft. |
| Bypassed Historic Bridge | Bypassed Historic over North Branch River | Closed to all traffic | Stone arch | 1867 | -- | 30.8 ft. | 80.1 ft. |
| Bypassed Historic Bridge | Bypassed Historic over Souhegan River | Closed to all traffic | Through truss | 1910 | -- | 146.0 ft. | 151.9 ft. |
| Bypassed Historic Bridge | Bypassed Historic over Souhegan River | Closed to all traffic | Arch | 1916 | -- | 60.0 ft. | 60.0 ft. |
| Bypassed Historic Bridge | Bypassed Historic over Contoocook River | Closed to all traffic | Pony truss | 1893 | -- | 96.1 ft. | 96.1 ft. |
| Canal Street Bridge | Canal Street over Nashua River | Open to traffic | Arch | 1928 | -- | 76.1 ft. | 160.1 ft. |
| Castle Hill Road Bridge | Castle Hill Road over Beaver Brook | Open to traffic | Timber stringer | 1920 | -- | 22.0 ft. | 26.9 ft. |
| Clarkville Road Bridge | Clarkville Road over South Branch Piscataquog River | Open to traffic | Timber stringer | 1930 | -- | 32.2 ft. | 33.1 ft. |
| Cohas Avenue Bridge | Cohas Avenue over Cohas Brook | Open to traffic | Stone arch | 1900 | -- | 16.1 ft. | 46.9 ft. |
| Country Road Bridge | Country Road over H20 LOOM PND OUTLET | Open to traffic | Timber stringer | 1920 | -- | 29.9 ft. | 37.1 ft. |
| Daniel Webster Highway Bridge | Daniel Webster Highway over Nashua River | Open to traffic | Arch | 1925 | -- | 57.1 ft. | 158.1 ft. |
| Daniel Webster Highway Bridge | Daniel Webster Highway over Salmon Brook | Open to traffic | Stone arch | 1901 | -- | 18.0 ft. | 24.0 ft. |
| Depot Street Bridge | Depot Street over Relief | Open to traffic | Arch | 1914 | -- | 12.1 ft. | 12.1 ft. |
| Elm Street Bridge | Elm Street over Souhegan River | Open to traffic | Stone arch | 1917 | -- | 60.0 ft. | 151.9 ft. |
| Fairmount Street Bridge | Fairmount Street over BMRR | Open to traffic | Timber stringer | 1930 | -- | 25.9 ft. | 101.1 ft. |
| Forrest Road Bridge | Forrest Road over Contoocook River | Open to traffic | Through truss | 1937 | -- | 82.0 ft. | 87.9 ft. |
| Frye Mill Road Bridge | Frye Mill Road over Burton Pond Outlet | Open to traffic | Timber stringer | 1920 | -- | 23.0 ft. | 27.9 ft. |
| Gage Hill Road Bridge | Gage Hill Road over Beaver Brook | Open to traffic | Stone arch | 1900 | -- | 19.0 ft. | 45.9 ft. |
| Great Brook Bridge | NH 101A (Elm Street) over Great Brook | Open to traffic | Stone arch | 1933 | -- | 18.0 ft. | 23.0 ft. |
| Hermit Road Bridge | Hermit Road over Canal Inlet | Open to traffic | Stone arch | 1900 | -- | 7.9 ft. | 24.0 ft. |
| Lyndeborough Road Bridge | Lyndeborough Road over South Branch Piscataquog River | Open to traffic | Timber stringer | 1940 | -- | 60.0 ft. | 63.7 ft. |
| Merrimack River Bridge | US 3/NH 3A over Merrimack River | Open to traffic | Deck truss | 1923 | -- | 153.9 ft. | 1190.0 ft. |
| Mill Street Bridge | Mill Street over Souhegan River | Open to traffic | Stone arch | 1925 | -- | 36.1 ft. | 36.1 ft. |
| Moeckel Road Bridge | Moeckel Road over Golden Brook | Closed to all traffic | Timber stringer | 1920 | -- | 9.8 ft. | 14.1 ft. |
| Nashua River Bridge | NH 111 over Nashua River | Open to traffic | Arch | 1950 | -- | 78.1 ft. | 252.0 ft. |
| Old Bridge Street Bridge | Old Bridge Street over Beaver Brook | Open to traffic | Stone arch | 1920 | -- | 19.0 ft. | 42.0 ft. |
| Old Twin Bridge Road Bridge | Old Twin Bridge Road over Baboosic Brook | Closed to all traffic | Timber stringer | 1920 | -- | 16.1 ft. | 21.0 ft. |
| Old Twin Bridge Road Bridge | Old Twin Bridge Road over Baboosic Brook | Closed to all traffic | Timber stringer | 1920 | -- | 22.0 ft. | 27.9 ft. |
| Piscataquog River Bridge | NH 3A (South Main Street) over Piscataquog River | Open to traffic | Stone arch | 1894 | -- | 38.1 ft. | 81.7 ft. |
| Piscataquog River Bridge | NH 13/NH 114 over Piscataquog River | Open to traffic | Arch | 1928 | -- | 89.9 ft. | 89.9 ft. |
| Russell Hill Road Bridge | Russell Hill Road over Blood Brook | Closed to all traffic | Deck truss | 1860 | -- | 44.9 ft. | 52.2 ft. |
| Russell Station Road Bridge | Russell Station Road over Rand Brook | Open to traffic | Timber stringer | 1930 | -- | 23.0 ft. | 28.9 ft. |
| Souhegan River Bridge | US 3 over Souhegan River | Open to traffic | Stone arch | 1921 | -- | 60.0 ft. | 112.9 ft. |
| Souhegan River Bridge | NH 13 over Souhegan River | Open to traffic | Stone arch | 1931 | -- | 49.9 ft. | 111.9 ft. |
| Stage Coach Road Bridge | Stage Coach Road over Burton Pond Outlet | Open to traffic | Timber stringer | 1940 | -- | 25.9 ft. | 29.9 ft. |
| Stony Brook Bridge | NH 31 over Stony Brook | Open to traffic | Stone arch | 1905 | -- | 49.9 ft. | 57.1 ft. |
| Temple Brook Bridge | NH 45 over Temple Brook | Open to traffic | Stone arch | 1951 | -- | 12.1 ft. | 16.1 ft. |
| Temple Road Bridge | Temple Road over Blood Brook | Open to traffic | Stone arch | 1901 | -- | 19.0 ft. | 48.9 ft. |
| West Deering Road Bridge | West Deering Road over Contoocook River | Open to traffic | Pony truss | 1905 | -- | 71.9 ft. | 82.0 ft. |
| Wilton Road Bridge | Wilton Road over Souhegan River | Open to traffic | Through truss | 1938 | -- | 168.0 ft. | 172.9 ft. |