| Nh 33 over Winnicut River | Poor | 65.0 ft | 17,736 | 1959 |
| US 1 over Csx | Poor | 42.0 ft | 15,436 | 1935 |
| US 1 over Csx(abd) | Poor | 120.1 ft | 14,314 | 1936 |
| Nh 1a over Hampton River | Poor | 1199.1 ft | 9,402 | 1949 |
| Maplewood Avenue over North Mill Pond | Poor | 24.9 ft | 5,829 | 1940 |
| Bridge Street over Spicket River | Poor | 28.9 ft | 4,883 | 1900 |
| Nh152 over North River | Poor | 23.0 ft | 3,719 | 1925 |
| Nh 1b over Little Harbor | Poor | 253.6 ft | 3,359 | 1942 |
| Nh111a over Exeter River | Poor | 79.1 ft | 3,259 | 1978 |
| Hall Road over Little Cohas Brook | Poor | 24.0 ft | 1,964 | 1974 |
| Hanson Road over Exeter River | Poor | 30.8 ft | 1,854 | 1932 |
| Cate Street over Hodgson Brook | Poor | 37.1 ft | 1,096 | 1940 |
| Causeway Road over Mill Creek | Poor | 42.0 ft | 639 | 1940 |
| Whitehall Road over Powwow River | Poor | 33.1 ft | 586 | 1976 |
| Dudley Road over Lamprey River | Poor | 51.8 ft | 547 | 1914 |
| Coakley Road over Hodgson Brook | Poor | 36.1 ft | 480 | 1940 |
| Pond Road over Csx | Poor | 41.0 ft | 438 | 1920 |
| Old Deerfield Road over Brook | Poor | 24.0 ft | 250 | 1920 |
| Scribner Road over Exeter River | Poor | 46.9 ft | 234 | 1941 |
| Griffin Mill Road over Maple Falls Brook | Poor | 28.9 ft | 208 | 1850 |
| Shepard Home Road over Exeter River | Poor | 27.9 ft | 208 | 1986 |
| Hilldale AVE over Powwow River | Poor | 30.8 ft | 208 | 1920 |
| I-95 over Access Road | Fair | 35.1 ft | 86,429 | 1950 |
| I-95 over Maplewood Avenue | Fair | 71.9 ft | 76,465 | 1970 |
| I-95 over Preble Way Csx | Fair | 1810.0 ft | 74,766 | 1971 |
| I-95 over Piscataqua River | Fair | 1344.2 ft | 74,766 | 1971 |
| Nh101 over Tower Hill Road | Fair | 26.9 ft | 52,392 | 1964 |
| I-95 NB over US 4 Nh 16 Sp Tpk | Fair | 127.0 ft | 38,772 | 1971 |
| I-95 SB over US 4 Nh 16 Sp Tpk | Fair | 127.0 ft | 35,888 | 1970 |
| Nh101 WB over King Street | Fair | 60.0 ft | 27,245 | 1961 |
| Nh101 EB over Lamprey River | Fair | 120.1 ft | 23,166 | 1963 |
| US 1 over Taylor River | Fair | 35.1 ft | 21,187 | 1965 |
| I-95 Ramp over Nh101 | Fair | 233.9 ft | 20,968 | 1976 |
| Nh 28 (s Broadway) over Spicket River | Fair | 25.9 ft | 20,229 | 1900 |
| I-95(RAMP B-d) over I-95 | Fair | 275.9 ft | 19,641 | 1976 |
| I-93 SB Ramps over I-93 NB | Fair | 152.9 ft | 18,966 | 2008 |
| Nh 33 over I-95 | Fair | 285.1 ft | 18,255 | 1971 |
| Nh108 over Csx | Fair | 150.9 ft | 16,562 | 1936 |
| Nh108 over Csx | Fair | 180.1 ft | 16,562 | 1936 |
| Nh 97 over Spicket River | Fair | 58.1 ft | 16,144 | 1958 |
| I-95 Ramps over Hodgson Brook | Fair | 34.1 ft | 16,022 | 1956 |
| Nh 33 over Csx | Fair | 69.9 ft | 14,099 | 1971 |
| Nh107 over Lamprey River | Fair | 95.1 ft | 13,739 | 1962 |
| Nh286 over Blackwater River | Fair | 95.1 ft | 13,696 | 1991 |
| Nh108 Nh111 Nh 27 over Exeter River | Fair | 65.0 ft | 13,290 | 1934 |
| Nh125 over Exeter River | Fair | 38.1 ft | 12,023 | 1960 |
| US 1 SB over Nhrr(abd) | Fair | 48.9 ft | 11,581 | 1936 |
| Nh101 over Drakeside Road | Fair | 153.9 ft | 11,460 | 1963 |
| US 1 NB Ramp over Nhrr(abd) | Fair | 105.0 ft | 10,859 | 1963 |
| Nh108 over Lamprey River | Fair | 65.9 ft | 10,702 | 1955 |
| Nh 27 over I-95 | Fair | 294.0 ft | 10,248 | 1976 |
| Nh101 over US 1 SB | Fair | 121.1 ft | 8,642 | 1963 |
| Ocean Road over I-95 | Fair | 271.0 ft | 8,244 | 1972 |
| Nh101 over US 1 NB | Fair | 130.9 ft | 7,428 | 1963 |
| Market Street EB over Tidal Basin | Fair | 132.9 ft | 7,353 | 1971 |
| Market Street WB over Tidal Basin | Fair | 140.1 ft | 7,353 | 1971 |
| Nh111 over I-95 | Fair | 295.9 ft | 7,327 | 1975 |
| Nh 43 Nh107 over Lamprey River | Fair | 35.1 ft | 7,161 | 1989 |
| Nh286 over Csx(abd) | Fair | 44.0 ft | 7,092 | 1940 |
| Walker Street over Piscataqua R Back Chan | Fair | 299.9 ft | 7,000 | 1913 |
| Nh111 over Little River | Fair | 26.9 ft | 6,155 | 1930 |
| Nh 28 Bypass over Cohas Brook | Fair | 22.0 ft | 5,769 | 1937 |
| I-95 SB Connector over I-95 NB | Fair | 155.8 ft | 5,680 | 1972 |
| Nh 43 over North Branch River | Fair | 23.0 ft | 5,654 | 1961 |
| Nh 27 over Lamprey River | Fair | 45.3 ft | 4,960 | 1935 |
| Nh108 over Exeter River | Fair | 122.0 ft | 4,920 | 1935 |
| Rocknham Mall Entr over Rockham BLVD Bk Parknlot | Fair | 1456.0 ft | 4,631 | 1991 |
| Main Street over Lamprey River | Fair | 57.1 ft | 4,039 | 1936 |
| Wyman AVE over Piscataqua Riv Back Chnl | Fair | 200.1 ft | 4,000 | 1941 |
| Nh101e Winnacunnet over Eel Creek | Fair | 24.0 ft | 3,902 | 1997 |
| Nh 88 over I-95 | Fair | 257.9 ft | 3,566 | 1975 |
| Nh151 over I-95 | Fair | 351.0 ft | 3,412 | 1975 |
| Nh 27 over North Branch River | Fair | 23.0 ft | 3,103 | 1932 |
| Nh 27 over Bean Brook | Fair | 23.0 ft | 3,103 | 1937 |
| Nh156 over Pawtuckaway River | Fair | 23.0 ft | 3,075 | 1942 |
| Nh 1b over Piscataqua Estuary | Fair | 483.9 ft | 3,041 | 1955 |
| Nh 1b over Piscataqua Estuary | Fair | 544.0 ft | 3,041 | 1955 |
| Nh 84 over I-95 | Fair | 254.9 ft | 2,868 | 1975 |
| Epping Street over Lamprey River | Fair | 44.9 ft | 2,826 | 1948 |
| Old Manchester RD over Nh101 | Fair | 232.6 ft | 2,816 | 1984 |
| Breakfast Hill RD over I-95 | Fair | 253.0 ft | 2,799 | 1972 |
| Nh 27 over Lamprey River | Fair | 65.0 ft | 2,642 | 1932 |
| Nh152 over Piscassic River | Fair | 23.0 ft | 2,525 | 1946 |
| Nh111a over Little River | Fair | 32.2 ft | 2,520 | 1934 |
| Grant Road over Piscassic River | Fair | 28.9 ft | 2,386 | 1947 |
| Towle Farm Road over I-95 | Fair | 264.1 ft | 2,242 | 1974 |
| Nh107a over Csx Road | Fair | 123.0 ft | 2,056 | 1937 |
| Cedar Road over Csx | Fair | 34.1 ft | 2,029 | 1920 |
| Winnicut Road over Winnicut River | Fair | 66.9 ft | 1,870 | 1931 |
| South Road over I-95 | Fair | 263.1 ft | 1,808 | 1975 |
| Nh111a over Dudley Brook | Fair | 25.9 ft | 1,663 | 1936 |
| Pierces Island RD over Little Harbor | Fair | 280.8 ft | 1,272 | 1958 |
| Mcintyre Road over Arboretum Drive | Fair | 44.0 ft | 1,183 | 1972 |
| Mccrillis Road over North River | Fair | 22.0 ft | 843 | 1963 |
| Park Street over Csx | Fair | 63.0 ft | 782 | 1900 |
| Cotton Road over Lamprey River | Fair | 85.0 ft | 762 | 1986 |
| Highland Avenue over Beaver Brook | Fair | 45.9 ft | 762 | 1935 |
| Chase Road over Powwow River | Fair | 24.9 ft | 610 | 1967 |
| Linden Street over Exeter River | Fair | 59.1 ft | 579 | 1993 |
| Rye Harbor Road over Brook | Fair | 29.9 ft | 574 | 1970 |
| Blake Road over Lamprey River | Fair | 41.0 ft | 568 | 1952 |
| Green Road over Nh101 | Fair | 273.3 ft | 528 | 1982 |
| Kearsarge Way over Csx | Fair | 151.9 ft | 504 | 1979 |
| Mill Road over Exeter River | Fair | 30.8 ft | 452 | 1967 |
| Cross Road over Exeter River | Fair | 53.1 ft | 416 | 1930 |
| New Road over Csx | Fair | 41.0 ft | 400 | 1930 |
| Garrison Lane over Little River | Fair | 26.9 ft | 13 | 1930 |
| Webster Groves RD over Country Pond Outlet | Fair | 24.0 ft | 10 | 1980 |
| Submarine Way over North Mill Pond | Fair | 51.8 ft | 10 | 1984 |
| I-95 over Market Street | Good | 107.0 ft | 70,573 | 1970 |
| US 4 Nh 16 Sp Tpk over Shawayttuck | Good | 47.9 ft | 68,236 | 1983 |
| US 4 Nh 16 Sp Tpk over Gosling Road | Good | 112.9 ft | 59,897 | 1993 |
| I-93 NB over Nh111a | Good | 139.1 ft | 52,370 | 2011 |
| I-95 SB over Csx | Good | 78.1 ft | 48,687 | 1972 |
| I-93 SB over Nh 38 | Good | 131.9 ft | 47,376 | 2013 |
| I-93 SB over Pelham Road | Good | 154.9 ft | 47,252 | 2014 |
| I-93 SB over Nh111a | Good | 134.8 ft | 47,252 | 2014 |
| I-93 NB over Nh 38 | Good | 132.9 ft | 47,229 | 2013 |
| I-95 NB over Csx | Good | 78.1 ft | 47,148 | 1972 |
| I-93 NB over Pelham Road | Good | 154.9 ft | 45,664 | 2014 |
| I-95 SB over Taylor River | Good | 82.0 ft | 43,466 | 2018 |
| I-95 NB over Taylor River | Good | 82.0 ft | 42,963 | 2018 |
| Nh101 over Little River | Good | 151.9 ft | 42,641 | 2000 |
| I-93 SB over Kendall Pond Road | Good | 107.9 ft | 42,082 | 1962 |
| I-93 SB over Fordway Extension | Good | 121.1 ft | 42,082 | 1962 |
| I-93 SB over Beaver Brook | Good | 78.4 ft | 42,082 | 2020 |
| I-93 SB over North Lowell Road | Good | 105.0 ft | 42,082 | 1995 |
| I-93 SB over Nh111 | Good | 409.8 ft | 42,082 | 2014 |
| I-93 NB over Beaver Brook | Good | 78.4 ft | 41,528 | 2019 |
| I-93 NB over Kendall Pond Road | Good | 109.9 ft | 41,528 | 1962 |
| I-93 NB over Fordway Extension | Good | 109.9 ft | 41,528 | 1962 |
| I-93 NB over North Lowell Road | Good | 96.1 ft | 41,528 | 1998 |
| I-93 NB over Nh111 | Good | 387.1 ft | 41,528 | 2011 |
| I-93 SB over Recreation Trail | Good | 98.1 ft | 40,868 | 2013 |
| I-93 SB over Nh 28 | Good | 177.5 ft | 40,868 | 2013 |
| I-93 SB over Stonehenge Road | Good | 71.9 ft | 37,723 | 1996 |
| I-93 NB over Recreation Trail | Good | 99.7 ft | 36,675 | 2014 |
| I-93 NB over Nh 28 | Good | 178.1 ft | 36,675 | 2014 |
| I-93 NB over Stonehenge Road | Good | 73.5 ft | 36,675 | 1995 |
| I-95 SB over Woodbury Avenue | Good | 69.9 ft | 35,888 | 1970 |
| I-95 NB over Woodbury Avenue | Good | 69.9 ft | 34,685 | 1970 |
| Nh102 over I-93 | Good | 338.6 ft | 34,331 | 2018 |
| I-95 SB over NB Ramp | Good | 127.0 ft | 30,667 | 1972 |
| Nh101 EB over King Street | Good | 63.0 ft | 28,293 | 1961 |
| Nh101 EB over Hooksett Road | Good | 127.6 ft | 28,293 | 1972 |
| Nh101 EB over Nh107 | Good | 135.8 ft | 26,381 | 1983 |
| Nh101 WB over Hooksett Road | Good | 127.6 ft | 26,196 | 1972 |
| Nh101 EB over Old Candia Road | Good | 154.9 ft | 26,196 | 1985 |
| Nh101 WB over Old Candia Road | Good | 154.9 ft | 26,196 | 1985 |
| Nh101 EB Ramp over Csx | Good | 95.1 ft | 25,915 | 1998 |
| Nh101 WB Ramp over Csx | Good | 95.1 ft | 25,640 | 1994 |
| Nh101 EB over Nh125 | Good | 111.9 ft | 24,544 | 1997 |
| Nh101 EB over Squamscott River | Good | 879.9 ft | 24,304 | 1998 |
| Nh101 WB over Nh125 | Good | 107.9 ft | 24,023 | 1996 |
| Nh101 WB over Squamscott River | Good | 879.9 ft | 23,913 | 1994 |
| Nh101 WB over Bloody Brook | Good | 90.6 ft | 23,571 | 1998 |
| Nh101 EB over Nh111 | Good | 153.5 ft | 23,524 | 2000 |
| Nh101 WB over Nh111 | Good | 153.5 ft | 23,197 | 2000 |
| Nh101 WB over Lamprey River | Good | 131.9 ft | 22,571 | 1985 |
| Nh107 over I-95 | Good | 222.4 ft | 22,291 | 1967 |
| Nh101 EB over Little River | Good | 154.9 ft | 21,556 | 1997 |
| Nh101 EB over Pine Road | Good | 72.5 ft | 21,556 | 1997 |
| Nh101 EB over Connor Farm Road | Good | 24.0 ft | 21,556 | 2000 |
| Nh101 EB over Bloody Brook | Good | 92.8 ft | 21,556 | 1998 |
| Nh101 WB over Nh108 | Good | 230.0 ft | 21,509 | 2000 |
| Nh101 EB over Main Street | Good | 78.1 ft | 21,383 | 1982 |
| Nh101 EB over Lamprey River | Good | 124.7 ft | 21,383 | 1983 |
| Nh101 EB over Nh108 | Good | 230.0 ft | 21,354 | 1999 |
| Nh101 EB over Chester Road | Good | 69.9 ft | 21,220 | 1981 |
| Nh101 WB over Little River | Good | 166.0 ft | 21,085 | 1997 |
| Nh101 WB over Pine Road | Good | 73.5 ft | 21,085 | 1997 |
| Nh101 WB over Connor Farm Road | Good | 24.0 ft | 21,085 | 2000 |
| Nh101 WB over Main Street | Good | 74.8 ft | 21,050 | 1982 |
| Nh101 WB over Lamprey River | Good | 124.3 ft | 21,050 | 1983 |
| Nh101 WB over Nh107 | Good | 132.2 ft | 21,050 | 1983 |
| Nh101 WB over Chester Road | Good | 69.9 ft | 21,002 | 1981 |
| Nh101 EB over Piscassic River | Good | 53.1 ft | 20,631 | 1997 |
| Nh101 WB over Piscassic River | Good | 53.1 ft | 20,130 | 1997 |
| Nh125 over Csx | Good | 89.9 ft | 19,888 | 1992 |
| I-93 On Ramps over South Policy Street | Good | 147.0 ft | 19,197 | 1960 |
| I-93 SB Ramps over I-93 SB | Good | 172.9 ft | 18,966 | 2008 |
| Nh125 over Lamprey River | Good | 108.9 ft | 17,674 | 1991 |
| Nh111 over Wetland 41 | Good | 65.9 ft | 17,028 | 2007 |
| Nh111 over Harris RD Flatrock Bk | Good | 601.0 ft | 17,014 | 2007 |
| Nh125 over North River | Good | 42.0 ft | 16,805 | 1977 |
| US 1 Bypass over Hodgson Brook | Good | 44.9 ft | 16,307 | 1940 |
| Nh111 over Spicket River | Good | 21.0 ft | 16,196 | 1978 |
| US 1 over Sagamore Creek | Good | 20.0 ft | 15,904 | 2000 |
| I-93 NB Off Ramp over South Policy Street | Good | 150.9 ft | 15,304 | 1961 |
| Nh 33 over Csx | Good | 49.9 ft | 15,024 | 2010 |
| US 1 Scott Avenue over Daniel Street | Good | 133.2 ft | 14,207 | 1921 |
| Nh111 over Beaver Brook | Good | 38.1 ft | 14,203 | 1961 |
| Nh108 over Squamscott River | Good | 416.7 ft | 13,846 | 2001 |
| I-93 NB On Ramp over Recreation Trail | Good | 102.0 ft | 13,006 | 2009 |
| US 4 Nh 16 Sp Tpk over NB Ramp | Good | 144.4 ft | 12,881 | 1971 |
| Nh 28 Bypass over Beaver Brook | Good | 29.9 ft | 12,708 | 1996 |
| Nh 27 over Bloody Brook | Good | 99.1 ft | 11,782 | 1998 |
| Nh 27 over Nh101 | Good | 219.2 ft | 11,782 | 1999 |
| Nh 27(exeter Rd) over Csx(abd) | Good | 38.1 ft | 11,099 | 1926 |
| US 1 Bypass over Piscataqua River Rr | Good | 2784.1 ft | 11,064 | 2017 |
| Nh121 over Little River Csx | Good | 381.9 ft | 10,799 | 2006 |
| Nh 28 over Tributary G | Good | 22.0 ft | 10,683 | 2015 |
| East Derry Road over Beaver Brook | Good | 24.0 ft | 10,613 | 1966 |
| Nh 27 over Nh101 | Good | 233.9 ft | 10,248 | 1996 |
| US 1 over Piscataqua River | Good | 902.6 ft | 9,471 | 1921 |
| Nh101 EB over I-95 | Good | 341.5 ft | 9,431 | 1999 |
| Nh101 WB over I-95 | Good | 342.8 ft | 9,431 | 2000 |
| Nh128 over Beaver Brook | Good | 31.5 ft | 9,150 | 1934 |
| Woodbury Avenue over Sp Tpk US 4 Nh 16 | Good | 265.4 ft | 8,800 | 2015 |
| Nh101 over Nhrr(abd) | Good | 120.1 ft | 8,642 | 1963 |
| Maplewood Avenue over US 1 Bypass | Good | 136.2 ft | 8,230 | 2015 |
| Wieczorek DR over Little Cohas Brook | Good | 439.6 ft | 8,168 | 2011 |
| I-93 SB Off Ramp over Recreation Trail | Good | 102.0 ft | 8,122 | 2009 |
| Ash Street over I-93 | Good | 313.6 ft | 7,299 | 2019 |
| Nh101 over Tide Mill Creek | Good | 126.0 ft | 7,203 | 1988 |
| Nh 28 Bypass over Lake Massabesic | Good | 47.9 ft | 7,177 | 2001 |
| Cross Street over I-93 | Good | 433.1 ft | 6,905 | 2007 |
| Nh 1a over Sagamore Creek | Good | 423.9 ft | 6,704 | 2015 |
| Nh 85 over Nh101 | Good | 175.9 ft | 6,676 | 1994 |
| Nh 43 Nh107 over Lamprey River | Good | 28.9 ft | 6,595 | 1984 |
| Lawrence Road over Spicket River | Good | 71.9 ft | 6,479 | 2010 |
| Nh 33 over US 1 Bypass | Good | 135.8 ft | 6,466 | 2013 |
| Nh101 Ramp A-b over Nh101 | Good | 259.8 ft | 6,073 | 1981 |
| Nh 85 over Csx | Good | 109.9 ft | 5,716 | 2006 |
| I-95 SB Connector over I-95 NB Ramp | Good | 116.1 ft | 5,680 | 1972 |
| South Road over Beaver Brook | Good | 23.0 ft | 5,285 | 1970 |
| Woodbury Avenue over US 1 Bypass | Good | 115.8 ft | 5,190 | 2020 |
| Fordway Road over Beaver Brook | Good | 44.0 ft | 5,046 | 2010 |
| Nh 43 over Lamprey River | Good | 25.9 ft | 5,028 | 1938 |
| Kingston Road over Csx | Good | 62.0 ft | 4,925 | 2004 |
| Nh111 over Exeter River | Good | 38.1 ft | 4,675 | 1933 |
| Nh 1b over South Mill Pond | Good | 25.9 ft | 4,588 | 1985 |
| Islington Street over US 1 Bypass | Good | 135.8 ft | 4,516 | 2015 |
| Nh108 Court ST over Little River | Good | 60.0 ft | 4,482 | 2018 |
| Nh107 over Exeter River | Good | 44.0 ft | 4,344 | 1988 |
| Nh152 over Csx | Good | 36.1 ft | 4,040 | 1927 |
| Nh 1a over Little River | Good | 25.9 ft | 3,933 | 2000 |
| I-93 SB Off Ramp over South Policy Street | Good | 146.0 ft | 3,861 | 1965 |
| Westville Road over Little River | Good | 29.9 ft | 3,826 | 2019 |
| Nh111 over Csx | Good | 37.1 ft | 3,778 | 1927 |
| Nh121a over Exeter River | Good | 24.9 ft | 3,762 | 1937 |
| Nh152 over North River | Good | 31.2 ft | 3,719 | 1970 |
| Bluff Street Ext over Widow Harris Brook | Good | 35.1 ft | 3,592 | 2020 |
| Town Farm Road over Spicket River | Good | 45.9 ft | 3,592 | 2016 |
| Main Street over Lamprey River | Good | 57.1 ft | 3,323 | 1999 |
| North Road over Nh101 | Good | 330.1 ft | 3,113 | 1992 |
| Linden Street over Little River | Good | 50.9 ft | 2,920 | 2015 |
| Depot Road over Nh101 | Good | 240.2 ft | 2,919 | 1981 |
| Nh 1a over Rye Harbor | Good | 95.1 ft | 2,740 | 1986 |
| Guinea Road over Nh101 | Good | 168.0 ft | 2,693 | 1995 |
| Nh 87 over Lamprey River Overflow | Good | 25.6 ft | 2,689 | 2004 |
| Nh 87 over Lamprey River | Good | 135.5 ft | 2,689 | 2004 |
| Nh121 over Sucker Brook | Good | 35.1 ft | 2,682 | 1930 |
| Beede Road over Nh101 | Good | 203.1 ft | 2,600 | 1998 |
| Nh152 over North River | Good | 24.9 ft | 2,493 | 1994 |
| Haverhill Road over Spicket River | Good | 22.0 ft | 2,410 | 2008 |
| Bluff Street over Hittytity Brook | Good | 25.9 ft | 2,321 | 2013 |
| New Boston Road over Powwow River | Good | 22.0 ft | 2,286 | 2009 |
| Towle Farm Road over Taylor River | Good | 26.9 ft | 2,242 | 1977 |
| Towle Farm Road over Nh101 | Good | 94.2 ft | 2,242 | 1995 |
| Nh 1a over Parsons Creek | Good | 44.0 ft | 1,938 | 1986 |
| Sandown Road over Exeter River | Good | 47.9 ft | 1,906 | 1998 |
| I-93 Rest Exit over Policy Brook | Good | 26.6 ft | 1,800 | 1967 |
| I-93 Rest Entrance over Policy Brook | Good | 26.6 ft | 1,800 | 1967 |
| Nh108 over Powwow River | Good | 25.6 ft | 1,716 | 1926 |
| Brackett Road over Berry Brook | Good | 36.1 ft | 1,673 | 1986 |
| Sherburne Road over I-95 | Good | 243.1 ft | 1,639 | 1971 |
| String Bridge ST over Squamscott River | Good | 58.1 ft | 1,568 | 1935 |
| String Bridge ST over Squamscott River | Good | 58.1 ft | 1,568 | 1935 |
| Maple Street over Hornes Brook | Good | 36.1 ft | 1,519 | 1998 |
| Garden Road over Little River | Good | 22.0 ft | 1,496 | 2010 |
| Packers Falls Road over Piscassic River | Good | 30.8 ft | 1,378 | 1931 |
| Langford Road over Lamprey River | Good | 68.9 ft | 1,255 | 1964 |
| Deerfield Road over Back Creek | Good | 22.0 ft | 1,167 | 2010 |
| Mill Street over Lamprey River | Good | 117.1 ft | 1,138 | 2004 |
| Brookdale Road over I-93 | Good | 313.0 ft | 1,124 | 2012 |
| Jewell Street over Powwow River | Good | 29.9 ft | 1,118 | 1960 |
| Nh 1a over Seavey Creek | Good | 162.1 ft | 1,042 | 2009 |
| Nottingham Road over Lamprey River | Good | 20.0 ft | 1,000 | 1978 |
| Walnut AVE over I-95 | Good | 289.0 ft | 995 | 1975 |
| Mill Pond Road over Little River | Good | 21.7 ft | 940 | 2009 |
| Patten Hill Road over Nh101 | Good | 238.8 ft | 897 | 1981 |
| Bradford Street over Tributary G | Good | 23.0 ft | 856 | 2006 |
| Prescott Road over Lamprey River | Good | 75.1 ft | 838 | 1990 |
| Prescott Road over Nh101 | Good | 238.5 ft | 838 | 1985 |
| Blueberry Hill RD over Exeter River | Good | 57.1 ft | 745 | 1987 |
| Fremont Road over Exeter River | Good | 29.9 ft | 713 | 1988 |
| Bow Lake Road over Sherburne Brook | Good | 25.3 ft | 662 | 2021 |
| Haigh Road over Exeter River | Good | 44.9 ft | 607 | 1979 |
| Crawley Falls Road over Exeter River | Good | 44.6 ft | 559 | 2014 |
| North Shore Road over Taylor Brook | Good | 33.1 ft | 541 | 2020 |
| Drew Road over Drew Brook | Good | 22.0 ft | 541 | 2011 |
| Teague Drive over Spicket River | Good | 36.1 ft | 541 | 2014 |
| Pond Road over Beaver Brook | Good | 23.0 ft | 511 | 1935 |
| Manter Mill Road over Cohas Brook | Good | 34.1 ft | 511 | 2000 |
| Hunter Mill Way over Cohas Brook | Good | 34.1 ft | 511 | 2000 |
| Collins Brook Road over Collins Brook | Good | 23.6 ft | 511 | 1989 |
| Martin Road over Piscassic River | Good | 25.6 ft | 449 | 2024 |
| New Boston Road over North Branch River | Good | 44.9 ft | 400 | 1985 |
| Castle Hill Road over Beaver Brook | Good | 25.9 ft | 279 | 2021 |
| Windsor Drive over Cohas Brook | Good | 50.9 ft | 208 | 2002 |
| Pine Road over Little River | Good | 43.6 ft | 208 | 1998 |
| Chester Turnpike over Nh101 | Good | 170.9 ft | 208 | 1984 |
| Sandown Road over Exeter River | Good | 22.0 ft | 208 | 2010 |
| Giles Road over Csx | Good | 38.1 ft | 208 | 1920 |
| Martin Road over Nh101 | Good | 169.9 ft | 208 | 1995 |
| Stark Street over US 1 Bypass | Good | 114.5 ft | 76 | 2019 |
| Pet Shop Drive over Little River | Good | 38.1 ft | 0 | 2005 |
| Ashland Road over I-95 Ramps | Good | 224.1 ft | 0 | 1972 |