Total Bridges
2,542
Public highway bridges in New Hampshire
State profile · Near median Poor share
New Hampshire bridge safety
Condition ratings, load ratings, and Poor-condition data for every public highway bridge in New Hampshire, based on the FHWA National Bridge Inventory.
- 2,542
- Public bridges
- 43.0%
- Good condition
- 7.1%
- Poor condition
Data updated May 2026
Good Condition
43.0%
1,092 bridges rated 7-9
-7.0pp vs 50% benchmark
Poor Condition
7.1%
180 bridges whose lowest applicable component is rated 0-4
0.1pp vs national avg 7.0%
New Hampshire vs national bridge condition
New Hampshire - Good condition share 43.0%
National avg
Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).
New Hampshire - Poor-condition share 23.6%
National avg
Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.0%.
Condition Distribution
New Hampshire vs nearby ranks
Adjacent states by Poor-condition share (lower share = better)
States are ranked by the share of bridges whose lowest applicable component rating is 4 or below. This describes recorded condition; it does not measure funding effectiveness or live crossing safety. States here sit immediately above and below New Hampshire on the same metric.
NY
New York
6.90% top marginal rate
KY
Kentucky
7.06% top marginal rate
NH
New Hampshire
7.08% top marginal rate
OK
Oklahoma
7.50% top marginal rate
NM
New Mexico
7.61% top marginal rate
Bridges Needing Most Attention in New Hampshire
Six lowest-condition bridges in New Hampshire, ranked by the portal's composite display score. Inspection intervals are risk-based under current NBIS rules.
OLD DEERFIELD ROAD
PoorOver: BROOK
185 FT FROM NH RTE 43, Rockingham, NH
Built 1920 Load: 1.8 t ADT: 190
TEMPLETON TURNPIKE
PoorOver: PRIEST BROOK
1.9MI. RTE 119, Cheshire, NH
Built 1984 Load: 2.7 t ADT: 86
DUDLEY ROAD
PoorOver: LAMPREY RIVER
.23 MI JCT 101, Rockingham, NH
Built 1914 Load: 2.9 t ADT: 535
SHOP ROAD
PoorOver: NEEDLE SHOP BROOK
0.8 MI N NEW CHESTER RD, Merrimack, NH
Built 1930 Load: 3.3 t ADT: 63
WHITCOMB MILLS RD
PoorOver: WHITE BROOK
0.06 MI FR ARCH ST, Cheshire, NH
Built 1940 Load: 3.6 t ADT: 814
LEIGHTON MEADOW RD
PoorOver: PHILLIPS BROOK
100 FT FR SULLIVAN RD 61, Coos, NH
Built 1940 Load: 3.6 t ADT: 90
All Bridges in New Hampshire
NH 10
FairOver: STOCKER BROOK
1.6 MI. FROM CROYDON TL, Sullivan, NH
Built 1936 Load: 22.9 t ADT: 6,794
FDR 39
FairOver: LANGDON BROOK
MAP 24, Carroll, NH
Built 1970 Load: 23.0 t ADT: 50
WELTON FALLS ROAD
FairOver: FOWLER RIVER
0.8 MI FR RED SCHOOL RD, Grafton, NH
Built 1965 Load: 23.0 t ADT: 90
LEBRUN ROAD
FairOver: S BRANCH BAKER RIVER
1.1 MI NH 118, Grafton, NH
Built 1930 Load: 23.0 t ADT: 90
NH 25,NH118
FairOver: BAKER RIVER
3.6 MI FROM RUMNEY TL, Grafton, NH
Built 1937 Load: 23.0 t ADT: 3,351
JEFFERS HILL ROAD
FairOver: OLIVERIAN BROOK
0.12 MI FR NH RTE 25, Grafton, NH
Built 1978 Load: 23.1 t ADT: 90
NH 10
FairOver: ASHUELOT RIVER
4.0 MI NORTH OF KEENE TL, Cheshire, NH
Built 1949 Load: 23.2 t ADT: 2,420
EAST SURRY ROAD
FairOver: ASHUELOT RIVER
TOWN RD 0.33MI KEENE TL, Cheshire, NH
Built 1940 Load: 23.2 t ADT: 817
NH 10
FairOver: OLIVERIAN BROOK
1.0 MI EAST VERMONT SL, Grafton, NH
Built 1937 Load: 23.2 t ADT: 2,288
FDR 20
FairOver: GARDINER BROOK
MAP 33, Carroll, NH
Built 1981 Load: 23.3 t ADT: 50
BARNET ROAD
FairOver: CONNECTICUT RIVER
VERMONT STATE LINE, Grafton, NH
Built 1937 Load: 23.3 t ADT: 973
BICKFORD HILL ROAD
FairOver: HAM BRANCH
0.07MI. RTE 116, Grafton, NH
Built 1973 Load: 23.5 t ADT: 90
NH112
FairOver: WILD AMMONOOSUC RIVER
1.3 MI WEST OF EASTON TL, Grafton, NH
Built 1932 Load: 23.5 t ADT: 1,061
NH 25A
FairOver: CONNECTICUT RIVER
VERMONT STATE LINE, Grafton, NH
Built 1937 Load: 23.5 t ADT: 3,554
NH 12,NH101
FairOver: ASHUELOT RIVER,PED TRAIL
1.0 MI. FROM KEENE CENTER, Cheshire, NH
Built 1961 Load: 23.6 t ADT: 22,443
GREENHILL ROAD
FairOver: ISINGLASS RIVER
3.1 MI FR DOVER TL, Strafford, NH
Built 1955 Load: 23.6 t ADT: 2,031
FDR 381
FairOver: TUTTLE BROOK
MAP 10, Grafton, NH
Built 1980 Load: 23.7 t ADT: 50
FDR 211
FairOver: E.BR. BAKER RIVER
MAP 36, Grafton, NH
Built 1976 Load: 23.7 t ADT: 100
BASE STATION ROAD
FairOver: AMMONOOSUC RIVER
4.3 MI NE US302, Coos, NH
Built 1937 Load: 23.9 t ADT: 1,775
CANAL STREET
FairOver: NASHUA RIVER
0.6 MI FROM ROUTE 3, Hillsborough, NH
Built 1928 Load: 23.9 t ADT: 14,567
NH202A
FairOver: ISINGLASS RIVER
2.5 MI FROM NORTHWOOD TL, Strafford, NH
Built 1923 Load: 23.9 t ADT: 2,179
CUTLER ROAD
FairOver: BLOODS BROOK
175 FT FR BLOODBROOK RD, Sullivan, NH
Built 1940 Load: 23.9 t ADT: 90
NO DATA ENTERED
FairOver: LOUISEVILLE BROOK
MAP 32, Carroll, NH
Built 1953 Load: 24.0 t ADT: 50
FDR 15
FairOver: TRIB. TO AMMONOOSUC
MAP 02, Coos, NH
Built 1949 Load: 24.0 t ADT: 99
NORTH WILMOT ROAD
FairOver: KIMPTON BROOK
0.04MI NH4A, Merrimack, NH
Built 1968 Load: 24.0 t ADT: 371
NH 11
FairOver: BK BAY LA WINNIPESAUKEE
0.25 MI N ALTON BAY, Belknap, NH
Built 1942 Load: 24.1 t ADT: 6,245
NH 13
FairOver: S BR PISCATAQUOG RIVER
0.8 MI S OF JCT RTE 136, Hillsborough, NH
Built 1947 Load: 24.1 t ADT: 4,777
US 3
FairOver: MAPLE ST,NHRR
2.3 MI FROM LACONIA T.L., Belknap, NH
Built 1947 Load: 24.3 t ADT: 17,678
GOVE ROAD
FairOver: FOWLER RIVER
0.1 MI FR NO RIVER RD, Grafton, NH
Built 1965 Load: 24.3 t ADT: 90
SHARON ROAD
FairOver: CONTOOCOOK RIVER
1.28 MI SHARON TL, Hillsborough, NH
Built 1925 Load: 24.3 t ADT: 636
NH103
FairOver: WARNER RIVER
SUTTON TL, Merrimack, NH
Built 1936 Load: 24.3 t ADT: 3,704
NH103
FairOver: WARNER RIVER
0.1 MI FROM JCT I-89, Merrimack, NH
Built 1936 Load: 24.3 t ADT: 3,704
NH 11B
FairOver: GUNSTOCK RIVER
0.3 MI N JCT NH 11-A, Belknap, NH
Built 1931 Load: 24.5 t ADT: 2,650
NH 11A
FairOver: POOR FARM BROOK
5.9 MI EAST LACONIA TL, Belknap, NH
Built 1936 Load: 24.5 t ADT: 5,198
RIVER ROAD
FairOver: SACO RIVER
2.1 MI FROM BARTLETT TL, Carroll, NH
Built 1950 Load: 24.5 t ADT: 4,565
CROSS ROAD
FairOver: CATSBANE BROOK
TOWN RD, Cheshire, NH
Built 1963 Load: 24.5 t ADT: 539
US202
FairOver: MOUNTAIN BROOK
1.0 MI TO RINDGE TL, Cheshire, NH
Built 1939 Load: 24.5 t ADT: 8,103
NH 10,NH123
FairOver: ASHUELOT RIVER
3.0 MI FROM GILSUM TL, Cheshire, NH
Built 1949 Load: 24.5 t ADT: 2,419
NH 12
FairOver: NHRR(ABD)
.5 MI E WESTMORELAND TL, Cheshire, NH
Built 1948 Load: 24.5 t ADT: 8,010
SEVEN ISLANDS BR
FairOver: ANDROSCOGGIN RIVER
Adjacent to Errol 071/030, Coos, NH
Built 1951 Load: 24.5 t
NH 16
FairOver: PEABODY RIVER
1.1 MI NE MARTINS LOC TL, Coos, NH
Built 1950 Load: 24.5 t ADT: 4,107
YEATON ROAD
FairOver: SPENCER BROOK
0.9 MI N JCT NH 3-A, Grafton, NH
Built 1919 Load: 24.5 t ADT: 307
NH112
FairOver: SABBADAY BROOK
0.8 MI WEST OF ALBANY TL, Grafton, NH
Built 1953 Load: 24.5 t ADT: 5,273
NH112,LOST RIV RD
FairOver: LOST RIVER
1.9 MI W OF JCT RT 118, Grafton, NH
Built 1957 Load: 24.5 t ADT: 1,652
NH 31
FairOver: CONTOOCOOK RIVER
1.24 MI. NE HANCOCK TL, Hillsborough, NH
Built 1934 Load: 24.5 t ADT: 1,650
BOND STREET
FairOver: NISSITISSIT RIVER
2.15 MI FROM MASS. SL, Hillsborough, NH
Built 1946 Load: 24.5 t ADT: 937
NH 13
FairOver: S BR PISCATAQUOG RIVER
.1 MI FROM JCT RT 136, Hillsborough, NH
Built 1937 Load: 24.5 t ADT: 3,692
MORRISON ROAD
FairOver: CONTOOCOOK RIVER
0.8 MI FR OLD SHARON RD9, Hillsborough, NH
Built 1958 Load: 24.5 t ADT: 1,387
ACCESS ROAD
FairOver: JOE ENGLISH BROOK
0.8 MILES FROM ON-ORBIT D, Hillsborough, NH
Built 2008 Load: 24.5 t ADT: 10
FORBES MTN ROAD
FairOver: WILD MEADOW BROOK
2.2 MI FR NORTH RD, Merrimack, NH
Built 1950 Load: 24.5 t ADT: 90
Showing 601-650 of 2,542 bridges
Related
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges.
Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the FHWA National Bridge Inventory (NBI). Poor condition is an inspection-record category, not a closure or unsafe-to-cross designation. Consult the bridge owner for current status.
Understanding Bridge Conditions
How FHWA rates bridge condition on a 0-9 scale.
Check Your Daily Bridges
How to look up bridge condition data for bridges on your route.
Read our methodology — how this data is sourced, computed, and verified.
Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.