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
FLUME BUS ROUTE
FairOver: PEMIGEWASSET RIVER
THE FLUME, Grafton, NH
Built 1886 Load: 10.8 t ADT: 50
MAIN STREET
FairOver: LAMPREY RIVER
0.7 MI. RTE 125, Rockingham, NH
Built 1936 Load: 10.9 t ADT: 3,948
SAWYERS CROSSING
FairOver: ASHUELOT RIVER
1.71MI E JCT NH 10, Cheshire, NH
Built 1859 Load: 11.6 t ADT: 3,494
FOREST ROAD
FairOver: CONTOOCOOK RIVER
1.0 MI EAST OF RTE 202, Hillsborough, NH
Built 1937 Load: 12.4 t ADT: 2,776
NARROWS ROAD
FairOver: SUNCOOK LAKE CHANNEL
0.4 MI FR WHITE OAK RD, Belknap, NH
Built 1960 Load: 12.7 t ADT: 346
NH123
FairOver: COLD RIVER
.22 MI SE LANGDON TL, Cheshire, NH
Built 1919 Load: 12.7 t ADT: 2,763
CHEMICAL ROAD
FairOver: WARNER RIVER
0.2 MI FROM JOPPA ROAD, Merrimack, NH
Built 1966 Load: 12.7 t ADT: 84
BENNETT ROAD
FairOver: CSX
0.9MI. RTE 108, Strafford, NH
Built 1910 Load: 12.7 t ADT: 642
DEPOT ROAD
FairOver: SUNCOOK RIVER
0.07 MI FR NH RTE 126, Belknap, NH
Built 1950 Load: 13.6 t ADT: 90
WINTER STREET
FairOver: SQUAM RIVER
0.2 MI FR NH RTE 25, Grafton, NH
Built 1941 Load: 13.6 t ADT: 1,014
MILLBROOK ROAD
FairOver: MILL BROOK
0.9MI. ORANGE TL, Grafton, NH
Built 2005 Load: 13.6 t ADT: 90
LOWER RIDGE ROAD
FairOver: ACADEMY BROOK
1.6 MI FR NH 106, Merrimack, NH
Built 1931 Load: 13.6 t ADT: 618
SOUTH ROAD
FairOver: S BR ASHUELOT RIVER
.12MI JCT NH 32, Cheshire, NH
Built 1936 Load: 14.3 t ADT: 1,106
NO DATA ENTERED
FairOver: BUNGA JAR
NO DATA ENTERED, Grafton, NH
Built 2007 Load: 14.3 t ADT: 50
BREEZY HILL ROAD
FairOver: POND BROOK
.9 MI FROM WARNER TL, Merrimack, NH
Built 1950 Load: 14.3 t ADT: 337
MAPLE STREET
FairOver: COLD BROOK
2.2 MI NE EFFINGHAM TL, Carroll, NH
Built 1922 Load: 14.5 t ADT: 250
OSSIPEE MT ROAD
FairOver: LOVELL RIVER
0.12 MI FR PINE HILL RD, Carroll, NH
Built 1951 Load: 14.5 t ADT: 90
UPPER ROAD
FairOver: BEARCAMP RIVER
2.1 MI FROM NH RTE 113, Carroll, NH
Built 1950 Load: 14.5 t ADT: 90
DIAMOND POND ROAD
FairOver: MOHAWK RIVER
0.14 MI NE JCT NH 26, Coos, NH
Built 1929 Load: 14.5 t ADT: 496
NORTH GROTON ROAD
FairOver: SMALL BROOK
2.4 MI FROM HEBRON TL, Grafton, NH
Built 1927 Load: 14.5 t ADT: 170
STINSON LAKE ROAD
FairOver: STINSON BROOK
1.6 MI S OF ELLSWORTH TL, Grafton, NH
Built 1927 Load: 14.5 t ADT: 840
DEER MEADOW ROAD
FairOver: DEER MEADOW BROOK
1.90MI CONCORD TL, Merrimack, NH
Built 1935 Load: 14.5 t ADT: 558
CORBIN BRIDGE ROAD
FairOver: CROYDON BRANCH SUGAR R
.69 MI JCT NH 10, Sullivan, NH
Built 1845 Load: 14.5 t ADT: 529
DANIELS ROAD
FairOver: OLIVERIAN BROOK
140 FT FR NH RTE 25, Grafton, NH
Built 1978 Load: 14.9 t ADT: 90
NO DATA ENTERED
FairOver: TUNNEL STREAM SALE
NO DATA ENTERED, Grafton, NH
Built 2015 Load: 14.9 t ADT: 99
VALLEY CROSS ROAD
FairOver: WILDCAT BROOK
0.04MI RTE 16B, Carroll, NH
Built 1905 Load: 15.0 t ADT: 192
HARTSHORN ROAD
FairOver: CROOKED RUN BROOK
.6 MILES W OF GRAY RD., Belknap, NH
Built 2003 Load: 15.1 t ADT: 90
RUDDSBORO ROAD
FairOver: MINK BROOK
4.4 MI FR LEBANON TL, Grafton, NH
Built 1946 Load: 15.1 t ADT: 90
US302,NH 10
FairOver: AMMONOOSUC RIVER
2.9 MI LANDAFF TL, Grafton, NH
Built 1980 Load: 15.1 t ADT: 5,186
NH101
FairOver: BLOOD BROOK
2.32 MI. E. PETERBORO TL, Hillsborough, NH
Built 1931 Load: 15.1 t ADT: 6,845
CHASE ROAD
FairOver: ORE HILL BROOK
O.1 MI WEST NH 25, Grafton, NH
Built 1950 Load: 15.2 t ADT: 90
WHITEFACE INTERVAL
FairOver: WHITEFACE RIVER
0.4 MI FR BENNETT ST, Carroll, NH
Built 1950 Load: 15.4 t ADT: 78
ANTRIM ROAD
FairOver: CONTOOCOOK RIVER
0.05 MI FR CONTOOCOOK VA, Hillsborough, NH
Built 1929 Load: 15.4 t ADT: 2,291
HIGHLAND AVENUE
FairOver: BEAVER BROOK
0.7 MI. NH 28, Rockingham, NH
Built 1935 Load: 15.4 t ADT: 745
US 3
FairOver: CONNECTICUT RIVER
PITTSBURG TL, Coos, NH
Built 1931 Load: 15.5 t ADT: 1,406
LAING ROAD
FairOver: WARNER RIVER
60 FT FROM NH RTE 103, Merrimack, NH
Built 1980 Load: 15.9 t ADT: 90
NH116
FairOver: CLARK BROOK
.06 MI JCT 10, Grafton, NH
Built 1961 Load: 16.1 t ADT: 3,639
US 3 BUS,NH107
FairOver: JEWETT BROOK
1.7 MI N. BELMONT T.L., Belknap, NH
Built 1979 Load: 16.3 t ADT: 10,392
NH113
FairOver: CHARLES BROOK
2.0 MI S OF MAINE SL, Carroll, NH
Built 1938 Load: 16.3 t ADT: 343
MIDDLE ROAD
FairOver: BEARCAMP RIVER
0.6 MI FROM NH RTE 113, Carroll, NH
Built 1960 Load: 16.3 t ADT: 90
NH109
FairOver: WILLEY BROOK
0.8 MI Wentworth StatePrk, Carroll, NH
Built 1922 Load: 16.3 t ADT: 2,249
ROXBURY ROAD
FairOver: OTTER BROOK
ROXBURY TL, Cheshire, NH
Built 1950 Load: 16.3 t ADT: 1,562
OLD ROXBURY ROAD
FairOver: MINNEWAWA BROOK
0.6 MI. RTE. 101, Cheshire, NH
Built 1952 Load: 16.3 t ADT: 90
PARTRIDGE BROOK RD
FairOver: PARTRIDGE BROOK
1.2MI NH 63, Cheshire, NH
Built 1930 Load: 16.3 t ADT: 255
HATT ROAD
FairOver: PARTRIDGE BROOK
1.51 MI. NH63, Cheshire, NH
Built 1932 Load: 16.3 t ADT: 75
PINE WOODS ROAD
FairOver: MIREY BROOK
0.17 MI FR NH RTE119, Cheshire, NH
Built 1920 Load: 16.3 t ADT: 90
JEFFERSON NOTCH RD
FairOver: CLAY BROOK
4.7 MI RT 302, Coos, NH
Built 1973 Load: 16.3 t ADT: 90
HOLLOW ROAD
FairOver: STRATFORD BOG BROOK
0.5 MI EAST US 3, Coos, NH
Built 1924 Load: 16.3 t ADT: 34
DOW AVENUE
FairOver: GALE RIVER
0.5 MI. RTE 116, Grafton, NH
Built 1910 Load: 16.3 t ADT: 208
RIDDLE HILL ROAD
FairOver: SMITH RIVER
0.17MI. RTE 4, Grafton, NH
Built 1977 Load: 16.3 t ADT: 139
Showing 401-450 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.