Slab bridges in New Hampshire
A solid, flat concrete slab that acts as both the supporting structure and the roadway surface. Common for short crossings. New Hampshire has 300 of them, 11.8% of its bridges. Nationally this type accounts for 13.2% of all bridges.Compare states for this type.
- Slab bridges
- 300
- Poor condition
- 7%
- 22 bridges
- Average age
- 58.4 yrs
- Combined length
- 2 mi
Busiest slab bridges in New Hampshire
Top 200 by daily traffic| Bridge | County | Location | Built | Type | Length | Daily traffic | Condition |
|---|---|---|---|---|---|---|---|
| NH101 EB over Connor Farm Road No. 008200580010600 | Rockingham County | 0.6MI W Nh 27 Overpass | 2000 | Slab | 24 ft | 21,556 | Good |
| US 1 over Taylor River No. 011101460008700 | Rockingham County | 0.1 MI Hampton Falls Tl | 1965 | Slab | 35 ft | 21,187 | Fair |
| NH101 WB over Connor Farm Road No. 008200580010700 | Rockingham County | 0.6MI W Nh 27 Overpass | 2000 | Slab | 24 ft | 21,085 | Good |
| Nh 28 (s Broadway) over Spicket River No. 022801090004900 | Rockingham County | 1.1MI N. of Mass Sl | 1900 | Slab | 26 ft | 20,229 | Fair |
| NH101 over Joe English Brook No. 000700930013900 | Hillsborough County | 1.15 MI SW Bedford Tl | 1936 | Slab | 22 ft | 19,233 | Fair |
| Nh 3A Brown Ave over Cohas Brook No. 016102100007800 | Hillsborough County | 1.2 MI S of JCT I-193 | 1986 | Slab | 35 ft | 16,980 | Fair |
| NH125 over Axe Handle Brook No. 022201550011000 | Strafford County | .1 MI from JCT Sp. Tpk. | 1983 | Slab | 25 ft | 16,489 | Good |
| Nh 33 over CSX No. 021701540010100 | Rockingham County | 0.75 MI from JCT I-95 | 2010 | Slab | 50 ft | 15,024 | Good |
| US 3 Bus NH107 over Black Brook No. 013901360009200 | Belknap County | 3.75 MI N Belmont Tl | 1975 | Slab | 23 ft | 14,252 | Fair |
| US 3 Bus Nh 11A over Durkee Brook No. 013901130003600 | Belknap County | .4 MI N.E. Belmont T.L. | 2022 | Slab | 40 ft | 13,077 | Good |
| Wellington Road over Valley Brook No. 016101120014300 | Hillsborough County | 0.1 Mile W of Nh 28 Byp | 2013 | Slab | 25 ft | 12,496 | Good |
| Nh 27(EXETER Rd) over Csx(abd) No. 011101620014200 | Rockingham County | 3.8 MI E. Exet-Hamp T.L. | 1926 | Slab | 38 ft | 11,099 | Good |
| US 3 Bus NH107 over Jewett Brook No. 013901260005500 | Belknap County | 1.7 MI N. Belmont T.L. | 1979 | Slab | 22 ft | 10,681 | Fair |
| East Derry Road over Beaver Brook No. 006300760011300 | Rockingham County | 0.02 MI E JCT Byp 28 | 1966 | Slab | 24 ft | 10,613 | Good |
| Nh 25 over Red Hill River No. 017601360021500 | Carroll County | 3.8 MI from Ctr Harbor Tl | 1940 | Slab | 27 ft | 9,873 | Fair |
| Nh 12 NH103 over Red Water Brook No. 004701060012000 | Sullivan County | 2.3 MI from Vt. Sl | 1997 | Slab | 42 ft | 9,640 | Fair |
| NH106 over Soucook River No. 003802360015600 | Merrimack County | Canterbury-Loudon Tl | 1952 | Slab | 22 ft | 9,549 | Fair |
| Nh 28 NH109 over Smith River No. 028301120011000 | Carroll County | 3.5 MI from Alton Tl | 1935 | Slab | 34 ft | 8,809 | Good |
| US 3 over Nhrr No. 013901310015400 | Belknap County | 2.02 MI S. Meredith T/L | 1933 | Slab | 32 ft | 8,744 | Good |
| US202 over Rickers Brook No. 022201520008300 | Strafford County | 0.6 MI JCT RTE 16 | 1939 | Slab | 24 ft | 7,961 | Good |
| NH101 over Blood Brook No. 025300940011400 | Hillsborough County | 1.6 MI from Wilton Tl | 1930 | Slab | 24 ft | 7,670 | Good |
| US 4 over Crystal Lake Brook No. 003600960003900 | Grafton County | 0.6 MI from Enfield Tl | 1941 | Slab | 76 ft | 7,633 | Good |
| NH140 over Tioga River No. 002001010006900 | Belknap County | 2.8 MI from Northfield Tl | 1965 | Slab | 35 ft | 7,514 | Fair |
| Nh 28 over Merrymeeting River No. 000601860015500 | Belknap County | 4.7 MI from Barnstead Tl | 2009 | Slab | 43 ft | 7,487 | Good |
| Nh 28 over Coffin Brook No. 000601900012100 | Belknap County | 3.0 MI N of Barnstead Tl | 1930 | Slab | 22 ft | 7,487 | Good |
| NH109 over Smith River No. 028301000011200 | Carroll County | 3.5 MI SE Tuftonboro Tl | 1900 | Slab | 31 ft | 7,358 | Good |
| Nh 12 over Mill Brook No. 027201450013100 | Cheshire County | 3.5 MI to Walpole Tl | 1928 | Slab | 37 ft | 6,478 | Fair |
| Nh 12 over Mill Brook No. 027201630012400 | Cheshire County | 1.73 MI from Surry Tl | 1941 | Slab | 22 ft | 6,478 | Fair |
| Nh 12 over White Bridge Brook No. 027201670012200 | Cheshire County | 1.3 MI Surry Tl | 1941 | Slab | 26 ft | 6,478 | Fair |
| Nh 10 over Mink Brook No. 011400400004300 | Grafton County | 0.2 MI from Lebanon Tl | 2006 | Slab | 48 ft | 6,198 | Good |
| Nh 28 Bypass over Cohas Brook No. 001300950004400 | Rockingham County | 4.45 MI S Auburn Tl. | 1937 | Slab | 22 ft | 5,769 | Fair |
| NH125 over Lyman Brook No. 017302290012500 | Strafford County | 1.0 MI Rochester Tl | 1935 | Slab | 28 ft | 5,629 | Fair |
| NH120 Park Lot Ped over Nhrr(abd) No. 014401210011700 | Grafton County | .1 MI from JCT RTE 4 | 1969 | Slab | 28 ft | 5,317 | Poor |
| Nh 25 NH113 over Cold Brook No. 025201540006700 | Carroll County | 1.9 MI from Sandwich T.L. | 1938 | Slab | 26 ft | 5,048 | Fair |
| Fordway Road over Beaver Brook No. 006300560008400 | Rockingham County | 0.4MI. NH102 | 2010 | Slab | 44 ft | 5,046 | Good |
| Nh 43 over Lamprey River No. 006001480004800 | Rockingham County | 0.1 MI from JCT RTE 107 | 1938 | Slab | 26 ft | 5,028 | Good |
| NH103 over Andrew Brook No. 018001040009200 | Merrimack County | 3.8 MI from Bradford Tl | 1937 | Slab | 29 ft | 4,837 | Fair |
| Nh 11A over Gunstock River No. 009101340009800 | Belknap County | 3.2 MI E Laconia Tl | 1926 | Slab | 31 ft | 4,557 | Fair |
| Nh 28 over Csx(abd) No. 020401940014600 | Carroll County | 1.6 MI Wolfeboro T.L. | 1959 | Slab | 106 ft | 4,556 | Good |
| Marlboro Street over Beaver Brook No. 013601430006600 | Cheshire County | 0.4 MI East JCT Nh 10 | 1978 | Slab | 25 ft | 4,228 | Fair |
| NH114 over Amey Brook No. 012000990015600 | Merrimack County | 1.17 M. SE Warner Tl | 1951 | Slab | 22 ft | 3,928 | Good |
| NH111 over CSX No. 019701360008800 | Rockingham County | 3.04MI NW JCT 1-A | 1927 | Slab | 37 ft | 3,778 | Good |
| NH121A over Exeter River No. 023200820010300 | Rockingham County | 2.85 Mi. SE Chester Tl | 1937 | Slab | 25 ft | 3,762 | Good |
| Town Farm Road over Spicket River No. 022801180011600 | Rockingham County | 1.10 MI from Mass. Sl | 2016 | Slab | 46 ft | 3,592 | Good |
| Nh 10 over Ash Swamp Brook No. 005601400012000 | Sullivan County | 4.3 Mi. N. of Newport Tl | 1927 | Slab | 24 ft | 3,532 | Good |
| Nh 16 over New River No. 020950580004800 | Coos County | .3 Mi. N. of Jackson Tl | 1955 | Slab | 23 ft | 3,464 | Fair |
| NH107 over Griffin Brook No. 007901600011100 | Merrimack County | Deerfield Tl | 2010 | Slab | 24 ft | 3,391 | Good |
| Nh 27 over North Branch River No. 003701840010200 | Rockingham County | .2 MI from Raymond Tl | 1932 | Slab | 23 ft | 3,103 | Fair |
| NH119 over Canal No. 012501280012700 | Cheshire County | .59 Mi. W. Winchester Tl | 1953 | Slab | 23 ft | 3,101 | Fair |
| NH156 over Pawtuckaway River No. 020101080002000 | Rockingham County | .5 Mi. N. Raymond Tl | 1942 | Slab | 23 ft | 3,075 | Fair |
| US 302 over Bemis Brook No. 011601490008900 | Carroll County | 5.8 MI Carroll Tl | 1950 | Slab | 27 ft | 3,004 | Good |
| Nh 32 over Martin Brook No. 025101490007200 | Cheshire County | 1.48 Mi. N. Richmond Tl | 1929 | Slab | 27 ft | 2,956 | Poor |
| Bradford Road over Wendell Brook No. 024700710005200 | Sullivan County | 0.15 Newport Tl | 2018 | Slab | 32 ft | 2,811 | Good |
| NH113 over Forrest Brook No. 016000810009000 | Carroll County | 1.9 MI NE Tamworth Tl | 1955 | Slab | 26 ft | 2,779 | Fair |
| US302 over Albany Brook No. 001700910009800 | Carroll County | 1.0 MI from Harts Loc. Tl | 1928 | Slab | 40 ft | 2,713 | Good |
| NH112 over Downes Brook No. 000200300015000 | Carroll County | 0.1 MI from Waterville | 1963 | Slab | 28 ft | 2,710 | Fair |
| Nh 11B over Gunstock River No. 009101210010200 | Belknap County | 0.6 MI N JCT Nh 11-A | 1941 | Slab | 25 ft | 2,690 | Poor |
| NH140 over Merrymeeting River No. 000601710016200 | Belknap County | 3.1 MI from Gilmanton Tl | 1940 | Slab | 27 ft | 2,614 | Fair |
| NH136 over Otter Brook No. 020801270013300 | Hillsborough County | 1.9 MI E Greenfield Tl | 1968 | Slab | 25 ft | 2,518 | Fair |
| NH109 over Shannon Brook No. 017601860019300 | Carroll County | 3.3 MI from Tuftonboro Tl | 1929 | Slab | 25 ft | 2,514 | Fair |
| NH152 over North River No. 020101150017200 | Rockingham County | .45MI. SE Northwood Tl | 1994 | Slab | 25 ft | 2,493 | Good |
| Main Street over Sugar River No. 024701110009900 | Sullivan County | 115 Ft from Garnett ST | 1920 | Slab | 30 ft | 2,301 | Fair |
| Towle Farm Road over Taylor River No. 011100960010800 | Rockingham County | At Hampton Falls Tl | 1977 | Slab | 27 ft | 2,242 | Good |
| NH103 over Sugar River No. 024700670007800 | Sullivan County | 0.2 M W Newport T.L. | 1957 | Slab | 100 ft | 2,220 | Good |
| NH113 over Chocorua River No. 025200950016200 | Carroll County | 5.1 MI NE JCT 25 & 113 | 1925 | Slab | 22 ft | 2,159 | Fair |
| NH109 over Melvin River No. 025901450007000 | Carroll County | 6.5 MI from Wolfeboro Tl | 1921 | Slab | 30 ft | 2,151 | Fair |
| Nh 49 over High Brook No. 026600960007100 | Grafton County | 2.4 Mi. NE Thornton Tl | 1967 | Slab | 23 ft | 2,074 | Good |
| NH175 over Winter Brook No. 003501540014400 | Grafton County | 6.2 MI N JCT US 3 | 1974 | Slab | 26 ft | 2,020 | Fair |
| Hall Road over Little Cohas Brook No. 015400700013500 | Rockingham County | 0.73 MI FR Harvey RD | 1974 | Slab | 24 ft | 1,964 | Poor |
| US302 over Willey Brook No. 011600690008100 | Carroll County | 1.3 MI SE from Carroll Tl | 1978 | Slab | 25 ft | 1,957 | Fair |
| Nh 1A over Parsons Creek No. 022601940009200 | Rockingham County | 4.0 MI from N Hampton Tl | 1986 | Slab | 44 ft | 1,938 | Good |
| Nh 10 over S Branch Sugar River No. 009800830009600 | Sullivan County | 0.6 MI from Lempster Tl | 1928 | Slab | 33 ft | 1,915 | Good |
| Garage Way over Salmon Falls River No. 017301980013100 | Strafford County | Nh-Me Sl | 1950 | Slab | 104 ft | 1,881 | Fair |
| US 4 over Tewksbury Pond Outlet No. 009901300012600 | Grafton County | 2.0 MI SE Orange Tl | 1928 | Slab | 23 ft | 1,858 | Fair |
| US 3 over Bishop Brook No. 024100790015100 | Coos County | 0.1 MI Clarksville Tl | 1924 | Slab | 28 ft | 1,820 | Good |
| Lincoln Street over Great Brook No. 017201220012600 | Hillsborough County | 0.1 MI FR Union ST | 1992 | Slab | 45 ft | 1,817 | Good |
| Nh 10 over Giles Brook No. 014601230017100 | Sullivan County | 0.4 MI from Goshen Tl | 1934 | Slab | 24 ft | 1,745 | Fair |
| NH118 over Blodgett Brook No. 026401800012800 | Grafton County | 3.3 MI from Woodstock Tl | 1960 | Slab | 31 ft | 1,732 | Fair |
| NH112 Lost Riv RD over Clay Brook No. 007201140003500 | Grafton County | 3.5 MI from Landaff Tl | 1932 | Slab | 23 ft | 1,677 | Fair |
| NH111A over Dudley Brook No. 008200450008500 | Rockingham County | .6 Mi. from Brentwood Tl | 1936 | Slab | 26 ft | 1,663 | Fair |
| NH112 Kancamagus over Hobbs Brook No. 000201890014000 | Carroll County | 3.3 MI from Conway Tl | 1990 | Slab | 25 ft | 1,660 | Good |
| Nh 63 over Kilburn Brook No. 012501180011800 | Cheshire County | 4.4 MI S Chesterfield Tl | 1936 | Slab | 24 ft | 1,643 | Fair |
| NH114 over Stocker Brook No. 010001250006600 | Sullivan County | .78 Mi. East of Jct. NH10 | 1929 | Slab | 30 ft | 1,542 | Good |
| NH136 over S Br Piscataquog River No. 008601110010000 | Hillsborough County | 2.6 MI from New Boston Tl | 1967 | Slab | 26 ft | 1,523 | Good |
| Maple Street over Hornes Brook No. 006300530009700 | Rockingham County | 0.2MI. NH102 | 1998 | Slab | 36 ft | 1,519 | Good |
| NH149 over Piscataquog River No. 006101500006200 | Hillsborough County | 0.21 Mi. SW Weare Tl | 1939 | Slab | 26 ft | 1,482 | Good |
| School Street over Nhrr No. 025600850004700 | Belknap County | 0.1 MI from US 3 | 1924 | Slab | 25 ft | 1,398 | Fair |
| Bristol Hill Road over Newfound River No. 003200970006900 | Grafton County | 0.9 MI Alexandria Tl | 1982 | Slab | 48 ft | 1,382 | Fair |
| Mill Road over CSX No. 007000920010700 | Strafford County | Town RD | 1973 | Slab | 37 ft | 1,379 | Fair |
| Manchester Road over Beaver Brook No. 000701340010000 | Hillsborough County | 0.5 MI JCT 101 | 2015 | Slab | 45 ft | 1,303 | Good |
| US 3 over Bagley Brook No. 025401880007000 | Grafton County | 3.5 MI from Campton Tl | 1933 | Slab | 27 ft | 1,291 | Fair |
| Chesham Road over Minnewawa Brook No. 011500560005800 | Cheshire County | 0.3 MI FR Dublin Tl | 1939 | Slab | 90 ft | 1,191 | Poor |
| Stage Road over Suncook River No. 009201440004700 | Belknap County | Town Rd. | 1992 | Slab | 36 ft | 1,172 | Good |
| Stage Road over Nighthawk Hollow Brook No. 009201220004100 | Belknap County | Town Rd. | 2021 | Slab | 59 ft | 1,167 | Good |
| River Road South over Partridge Brook No. 027200890010000 | Cheshire County | 0.72 MI NH63 | 1937 | Slab | 147 ft | 1,167 | Poor |
| Hanover Center RD over Monahan Brook No. 011401160009700 | Grafton County | 4.2 MI FR Lyme Tl | 1929 | Slab | 26 ft | 1,167 | Good |
| Hanover Center RD over Brook No. 011401310016200 | Grafton County | 0.7 MI FR Lyme Tl | 1940 | Slab | 23 ft | 1,167 | Fair |
| North Shore Road over Georges Brook No. 011801250011200 | Grafton County | 0.41 Mi. from Jct. 3-A | 1900 | Slab | 24 ft | 1,167 | Good |
| Nh 18 NH116 over Indian Creek No. 024552120012600 | Grafton County | 0.80 Mile S. Beth. Tl. | 2017 | Slab | 28 ft | 1,167 | Good |
| West Road over Hoyt Brook No. 002800980011400 | Merrimack County | 6.6 MI from Warner Tl | 2010 | Slab | 28 ft | 1,167 | Good |
| Shaker Road over Brook No. 019601300015400 | Merrimack County | Adjacent to JCT NH140 | 2019 | Slab | 34 ft | 1,167 | Good |
| NH123A over Bowers Brook No. 000101140006300 | Sullivan County | In S Acworth Village | 2018 | Slab | 38 ft | 1,167 | Good |
| Allen Road over Cold River No. 000101640011400 | Sullivan County | .6 MI from Lempster Tl | 1975 | Slab | 43 ft | 1,167 | Good |
| Baker Street over Beaver Brook No. 013601410006300 | Cheshire County | 1.0 MI SE from Keene Ctr | 1978 | Slab | 32 ft | 1,158 | Good |
| NH123 over Warren Brook No. 000501070013000 | Cheshire County | 2.86 Mi. SE Jct. Nh 123-A | 2012 | Slab | 32 ft | 1,124 | Good |
| South Village Road over Mill Brook No. 027201670012000 | Cheshire County | 0.02MI. RTE 12 | 2015 | Slab | 27 ft | 1,093 | Good |
| Depot Street over Relief No. 000901810007100 | Hillsborough County | 0.2MI Bennington Tl | 1914 | Slab | 32 ft | 1,065 | Good |
| Depot Street over Relief No. 000901830007100 | Hillsborough County | 0.07MI Bennington Tl | 2013 | Slab | 40 ft | 1,065 | Good |
| Nh 1A over Seavey Creek No. 022602520015600 | Rockingham County | 1.6 MI from JCT RTE 1B | 2009 | Slab | 162 ft | 1,042 | Good |
| Pleasant Valley RD over Heath Brook No. 028301160007200 | Carroll County | 0.95 Miles from Nh 28 | 2020 | Slab | 31 ft | 1,032 | Good |
| Brook Road over Gunnison Brook No. 009800850011700 | Sullivan County | .05 MI NE of JCT Nh 10 | 1940 | Slab | 29 ft | 1,012 | Fair |
| Brook Road over Gunnison Brook No. 009800900012300 | Sullivan County | .47 MI N E of JCT Nh 10 | 1945 | Slab | 23 ft | 1,012 | Fair |
| Nh 26 over Clear Stream No. 006362360012200 | Coos County | 0.2 MI NW Millsfield Tl | 1951 | Slab | 26 ft | 981 | Fair |
| Ellsworth Hill RD over Connor Brook No. 003501150012600 | Grafton County | 3.6 MI Ellsworth Tl | 1934 | Slab | 23 ft | 961 | Fair |
| River Road over Brook No. 020900660015900 | Grafton County | .72 Mi. SW Jct. 10 and 25 | 1951 | Slab | 27 ft | 943 | Fair |
| Nh 26 over Recreation Trail No. 006361900005100 | Coos County | .3 M E of Colebrook T/L | 2017 | Slab | 30 ft | 926 | Good |
| Tuftonboro Road over Beech River No. 020401540019500 | Carroll County | 3.3 MI FR Tuftonboro Tl | 1928 | Slab | 27 ft | 910 | Good |
| Main Street over Kings Brook No. 025000970008800 | Merrimack County | 1.8 Mi. Newbury Tl | 2007 | Slab | 25 ft | 887 | Good |
| Belknap Mt Road over Gunstock River No. 009101410008900 | Belknap County | 100 South Nh 11-A | 1900 | Slab | 24 ft | 886 | Good |
| Goose Pond Road over Goose Pond Brook No. 003600870007400 | Grafton County | 2.9 MI from Hanover Tl | 1991 | Slab | 29 ft | 829 | Good |
| Goose Pond Road over Goose Pond Brook No. 003600870009200 | Grafton County | 3.8 MI from Hanover Tl | 2014 | Slab | 44 ft | 829 | Good |
| Nh 25A over Brackett Brook No. 020302170011200 | Grafton County | 9.9 MI from Vermont Sl | 1929 | Slab | 40 ft | 826 | Poor |
| Nh 25A over Baker Pond Brook No. 020302190011200 | Grafton County | 10.2 MI from Vermont Sl | 1929 | Slab | 24 ft | 826 | Poor |
| Old Richmond Road over S Branch Ashuelot River No. 025101670009400 | Cheshire County | 2.41MI. RTE32 | 1999 | Slab | 43 ft | 823 | Good |
| Fowler River Road over Bog Brook No. 000301740014600 | Grafton County | 0.1 MI from Bristol Tl | 1927 | Slab | 30 ft | 823 | Good |
| Horace Greeley RD over Pulpit Brook No. 000700600015800 | Hillsborough County | 0.1 MI Bedford Tl | 2018 | Slab | 45 ft | 794 | Good |
| NH109 over Salmon Falls River No. 026102100013900 | Carroll County | Nh-Me State Line | 1962 | Slab | 28 ft | 789 | Fair |
| Spring Street over Ela River No. 008400570012600 | Strafford County | 0.37 RTE 11 | 1998 | Slab | 48 ft | 770 | Good |
| Highland Avenue over Beaver Brook No. 006300570008900 | Rockingham County | 0.7 Mi. Nh 28 | 1935 | Slab | 46 ft | 762 | Fair |
| Hooksett Turnpike over Bela Brook No. 005202000001500 | Merrimack County | 0.18 MI FR Bow Tl | 2021 | Slab | 47 ft | 727 | Good |
| NH113 over Bearcamp River No. 023301870008500 | Carroll County | 2.6 MI from RTE 109 | 1927 | Slab | 39 ft | 716 | Good |
| NH114 over Stocker Pond Outlet No. 010001400006900 | Sullivan County | .67 Mi. SW Springfield Tl | 1934 | Slab | 28 ft | 715 | Good |
| Old Lake Shore RD over Gunstock River No. 009101060009900 | Belknap County | 240 Ft FR Intervale RD | 1927 | Slab | 46 ft | 672 | Good |
| Canal Road over Great East Lake Outlet No. 026101860011800 | Carroll County | Town RD Maine Sl | 1920 | Slab | 40 ft | 665 | Good |
| Town House Road over Geer Brook No. 005501240009400 | Sullivan County | 3.75 Mi. from Jct. 12-A | 1981 | Slab | 23 ft | 641 | Good |
| Causeway Road over Mill Creek No. 023401670009100 | Rockingham County | 0.03 MI from Depot Road | 1940 | Slab | 42 ft | 639 | Poor |
| Beaver Brook Road over Beaver Brook No. 017501420008900 | Hillsborough County | 0.4 Mi. Amherst Tl | 1932 | Slab | 30 ft | 629 | Poor |
| Chase Road over Powwow River No. 023800690008700 | Rockingham County | .2 Mi. SW of Nh 107-A | 1967 | Slab | 25 ft | 610 | Fair |
| Scenic Drive over Poor Farm Brook No. 009101140014700 | Belknap County | 1.3 MI FR Belknap Point | 1966 | Slab | 31 ft | 599 | Good |
| College Road over Willey Brook No. 028301760009900 | Carroll County | 0.42MI NH28 | 2002 | Slab | 29 ft | 578 | Good |
| Deer Meadow Road over Deer Meadow Brook No. 026801400007000 | Merrimack County | 1.90MI Concord Tl | 1935 | Slab | 30 ft | 569 | Fair |
| Birchdale Road over White Brook No. 002700920013600 | Merrimack County | 1.25 MI SE JCT Nh 13 | 2018 | Slab | 28 ft | 565 | Good |
| Birchdale Road over Bela Brook No. 005201930002700 | Merrimack County | 0.23 MI SE JCT Nh 13 | 2021 | Slab | 47 ft | 565 | Good |
| Crawley Falls Road over Exeter River No. 002900730006500 | Rockingham County | 1.6 MI from Kingston Tl | 2014 | Slab | 45 ft | 559 | Good |
| Lebanon Street over Salmon Falls River No. 017300810015900 | Strafford County | Nh.-Me. Sl | 1920 | Slab | 32 ft | 557 | Fair |
| Lower Main Street over Sugar River No. 024700940010000 | Sullivan County | 0.3 MI FR Nh RTE 11 | 1900 | Slab | 26 ft | 557 | Good |
| Dudley Road over Lamprey River No. 021900830015400 | Rockingham County | .23 MI JCT 101 | 1914 | Slab | 52 ft | 547 | Poor |
| Waukewan RD over Waukewan Lake Inlet No. 004000810004000 | Belknap County | New Hampton T/L | 2022 | Slab | 32 ft | 541 | Good |
| Bohannon Bridge RD over Nissitissit River No. 003401050005500 | Hillsborough County | 0.99 MI from Mass. Sl | 1940 | Slab | 34 ft | 524 | Good |
| NH115A over Cherry Mill Brook No. 013500890009000 | Coos County | 3.6 MI from JCT RTE 2 | 1936 | Slab | 28 ft | 519 | Good |
| Beals Road over Baboosic Brook No. 001901050005500 | Hillsborough County | 33 Ft FR Merrimack Tl | 1928 | Slab | 23 ft | 511 | Poor |
| Stowell Road over Baboosic Brook No. 016800450017100 | Hillsborough County | 338 Ft FR Bedford Tl | 1990 | Slab | 32 ft | 511 | Fair |
| Pond Road over Beaver Brook No. 006300880012400 | Rockingham County | 0.3MI NH102 | 1935 | Slab | 23 ft | 511 | Good |
| Tasker Hill Road over Pequawket Pond No. 005401820006600 | Carroll County | In Conway Village | 2010 | Slab | 34 ft | 510 | Good |
| Reservoir Road over Camp Brook No. 011400560008900 | Grafton County | 0.9 MI FR Nh RTE 10/120 | 2021 | Slab | 27 ft | 510 | Good |
| Thrasher Road over Red Water Brook No. 004701060012800 | Sullivan County | 1.4MI NH12 | 1900 | Slab | 27 ft | 505 | Good |
| High Street over Sugar River No. 024701080009900 | Sullivan County | 0.3 Mi. RTE.103B | 1920 | Slab | 27 ft | 505 | Fair |
| Whitten Neck Road over Crescent Lake Inlet No. 028301260010700 | Carroll County | 0.19 Mi.Fr. Nh 28 | 2005 | Slab | 44 ft | 502 | Good |
| Hancock Road over Skatutakee Lake No. 011501430008100 | Cheshire County | Town RD | 1960 | Slab | 39 ft | 489 | Good |
| Middle Road over Mcdowell Reservoir No. 011201090005400 | Hillsborough County | .9 MI FR Peterboro Tl | 1950 | Slab | 31 ft | 488 | Good |
| Bean Road over Bloods Brook No. 021301720010700 | Sullivan County | 45 Ft from Nh RTE 120 | 1969 | Slab | 28 ft | 481 | Good |
| Kellys Corner Road over Sanborn Brook No. 004601500015400 | Merrimack County | 0.5MI. NH28 | 1991 | Slab | 28 ft | 477 | Fair |
| Nh 16B over Great Brook No. 013201670008200 | Carroll County | 1.7 MI JCT 16-A | 1937 | Slab | 28 ft | 464 | Fair |
| Beard Road over Beards Brook No. 012201070005600 | Hillsborough County | 0.8 MI FR Nh RTE 9 | 1965 | Slab | 24 ft | 463 | Good |
| Village Road over Andrew Brook No. 018001200007800 | Merrimack County | 300FT. Rte. 103 | 2011 | Slab | 49 ft | 458 | Good |
| Nh 25C over Eastman Brook No. 020901320013600 | Grafton County | 4.11 Mi. NW of Warren Tl | 1949 | Slab | 23 ft | 451 | Fair |
| Nh 25C over Eastman Brook No. 020901590012700 | Grafton County | 2.51 Mi. NW of Warren Tl | 1936 | Slab | 27 ft | 451 | Good |
| Lyndeborough Road over Meadow Brook No. 017900900008100 | Hillsborough County | .2 North of 084/077 | 2023 | Slab | 49 ft | 440 | Good |
| Jones Road over Hoyt Brook No. 002801410013700 | Merrimack County | 0.4 MI Nh 114 | 2008 | Slab | 44 ft | 439 | Good |
| Longview Road over Moose Brook No. 011201160010800 | Hillsborough County | .08 MI from Nh RTE 123 | 1930 | Slab | 24 ft | 431 | Good |
| Garland Road over Otter Brook No. 014101730009000 | Coos County | 0.03 MI FR Grange RD | 1992 | Slab | 28 ft | 421 | Good |
| North Street over Millers River No. 022101730007600 | Cheshire County | 0.5 Mi. RTE.119 | 2003 | Slab | 34 ft | 406 | Good |
| New Boston Road over North Branch River No. 003701450012900 | Rockingham County | 2.7 MI from Raymond Tl | 1985 | Slab | 45 ft | 400 | Good |
| Fairgrounds Road over West Branch Brook No. 002800640014000 | Merrimack County | 1.9 MI from Newbury Tl | 2001 | Slab | 53 ft | 386 | Fair |
| NH116 over Reel Brook No. 007201240010900 | Grafton County | 3.4 MI S Franconia T.L. | 1928 | Slab | 33 ft | 360 | Good |
| Water Street over West Branch Brook No. 002801260015000 | Merrimack County | .12 MI from Old Warren R | 1980 | Slab | 31 ft | 349 | Fair |
| Davis Road over Smith River No. 009901230010400 | Grafton County | 95FT. RTE 4 | 2011 | Slab | 34 ft | 335 | Good |
| Fitch Road over Contoocook River No. 013401700008700 | Cheshire County | 200 Ft FR US202 | 1970 | Slab | 36 ft | 326 | Good |
| Cobb Farm Road over Razor Brook No. 001701080011400 | Carroll County | 1.9 MI FR Harts Location | 1935 | Slab | 24 ft | 318 | Good |
| Mill Road over Great Brook No. 026201820006800 | Cheshire County | 0.22 MI FR Old Keene RD | 2010 | Slab | 29 ft | 296 | Good |
| Washburn Road over Patten Brook No. 000301600010900 | Grafton County | 8.11 MI from E Hill RD | 1950 | Slab | 30 ft | 289 | Poor |
| River Road over Hewes Brook No. 015700410007400 | Grafton County | 1.2 Mi. Tl Hanover | 2020 | Slab | 38 ft | 288 | Good |
| West Street over California Brook No. 025100800012400 | Cheshire County | 0.41MI RTE 10 | 2005 | Slab | 35 ft | 266 | Good |
| East Side River RD over Chickwolnepy Stream No. 017001970011900 | Coos County | 1.7 MI S Dummer Tl | 1950 | Slab | 82 ft | 264 | Good |
| Loudon Ridge Road over Academy Brook No. 015501990011300 | Merrimack County | 0.4 MI FR Lowerridge RD | 2023 | Slab | 40 ft | 260 | Good |
| Stinson Lake Road over Sucker Brook No. 007500650007000 | Grafton County | .06 Mi. N. of Rumney Tl | 1900 | Slab | 27 ft | 258 | Good |
| Old Deerfield Road over Brook No. 003701510012300 | Rockingham County | 185 Ft from Nh RTE 43 | 1920 | Slab | 24 ft | 250 | Poor |
| Dodge Road over Pettyboro Brook No. 001801310014500 | Grafton County | 1.5 MI FR Lisbon Tl | 1972 | Slab | 23 ft | 243 | Fair |
| Craig Road over Stanley Brook No. 006601700006400 | Cheshire County | 0.5 Mi. RTE 137 | 1935 | Slab | 27 ft | 235 | Fair |
| Bog Road over Stratford Bog Brook No. 024401230010400 | Coos County | 2.5 Mi. US3 | 1998 | Slab | 54 ft | 230 | Good |
| Tannery Hill Road over Ferguson Brook No. 011201250004900 | Hillsborough County | 0.5 MI from Middle Road | 2002 | Slab | 31 ft | 226 | Good |
| Dundee Road over Great Brook No. 013201710008400 | Carroll County | 3.4 MI Bartlett T.L. | 1930 | Slab | 25 ft | 216 | Fair |
| Stage Road over Little Sugar River No. 026000670004600 | Sullivan County | 2.9 Mi. Charlestown Tl | 1999 | Slab | 29 ft | 210 | Good |
| Old Temple Road over Stony Brook No. 015800740008500 | Hillsborough County | 1.6 MI FR Temple Tl | 2005 | Slab | 38 ft | 209 | Good |
| Pine Road over Little River No. 002901380011000 | Rockingham County | .3 MI S JCT Old 101 | 1998 | Slab | 44 ft | 208 | Good |
| Sandown Road over Exeter River No. 005900470012600 | Rockingham County | .1 MI East Sandown Tl | 2010 | Slab | 22 ft | 208 | Good |
| Gregg Lake Road over Gregg Lake No. 000901190009100 | Hillsborough County | Town RD | 1997 | Slab | 36 ft | 201 | Good |
| Webster Highway over Whiting Brook No. 025301160013300 | Hillsborough County | 0.30MI Wilton Tl | 2000 | Slab | 30 ft | 184 | Good |
| Water Street over Johns River No. 027401060010600 | Coos County | 0.05 MI from Brown ST | 1932 | Slab | 28 ft | 182 | Good |
| North Groton Road over Small Brook No. 010501530008400 | Grafton County | 2.4 MI from Hebron Tl | 1927 | Slab | 23 ft | 173 | Fair |
Counties with the most
| Grafton County | 49 |
| Hillsborough County | 41 |
| Carroll County | 36 |
| Sullivan County | 35 |
| Rockingham County | 32 |
| Merrimack County | 29 |
| Cheshire County | 26 |
| Belknap County | 23 |
| Coos County | 20 |
| Strafford County | 9 |
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