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
NH101 WB
UnknownOver: PINE ROAD
.2 MI EAST EXETER TL., Rockingham, NH
Built 1997 ADT: 2,700
CHESTER TURNPIKE
UnknownOver: NH101
0.4 MI AUBURN TL, Rockingham, NH
Built 1984 ADT: 46,000
NH101 RAMP A-B
UnknownOver: NH101
1.9MI E OF AUBURN TL, Rockingham, NH
Built 1981 ADT: 40,767
PATTEN HILL ROAD
UnknownOver: NH101
1.7 MI FROM RAYMOND TL, Rockingham, NH
Built 1981 ADT: 40,767
DEPOT ROAD
UnknownOver: NH101
.5 MI E CANDIA RAYMOND TL, Rockingham, NH
Built 1981 ADT: 39,124
I-93 SB
UnknownOver: KENDALL POND ROAD
.2 MI S. LONDONDERRY TL, Rockingham, NH
Built 1962 ADT: 6,400
I-93 NB
UnknownOver: KENDALL POND ROAD
.2 MI S OF LONDONDERRY TL, Rockingham, NH
Built 1962 ADT: 6,400
I-93 SB
UnknownOver: FORDWAY EXTENSION
0.8 MI S. LONDONDERRY T L, Rockingham, NH
Built 1962 ADT: 1,000
I-93 NB
UnknownOver: FORDWAY EXTENSION
0.8 MI SO. LONDONDERRY TL, Rockingham, NH
Built 1962 ADT: 1,000
BEEDE ROAD
UnknownOver: NH101
Junction Beede Rd &NH101, Rockingham, NH
Built 1998 ADT: 44,000
MARTIN ROAD
UnknownOver: NH101
1.1 MI WEST JCT NH101/125, Rockingham, NH
Built 1995 ADT: 24,000
NH101 EB
UnknownOver: NH125
.4 MI N BRENTWOOD TL, Rockingham, NH
Built 1997 ADT: 21,000
NH101 WB
UnknownOver: NH125
.41 MI N BRENTWOOD TL, Rockingham, NH
Built 1996 ADT: 27,000
NH101 EB
UnknownOver: CONNOR FARM ROAD
0.6MI W NH 27 OVERPASS, Rockingham, NH
Built 2000 ADT: 35
NH101 WB
UnknownOver: CONNOR FARM ROAD
0.6MI W NH 27 OVERPASS, Rockingham, NH
Built 2000 ADT: 35
NH 27
UnknownOver: NH101
JCT NH 27/NH101, Rockingham, NH
Built 1999 ADT: 21,500
NH 85
UnknownOver: NH101
1.5 MI NEWFIELDS TL, Rockingham, NH
Built 1994 ADT: 48,000
GUINEA ROAD
UnknownOver: NH101
1.1 MI FROM HAMPTON TL, Rockingham, NH
Built 1995 ADT: 43,525
NH101 EB
UnknownOver: NH111
.2 MI FROM HAMPTON TL, Rockingham, NH
Built 2000 ADT: 10,000
NH101 WB
UnknownOver: NH111
.2 mi Hampton TL, Rockingham, NH
Built 2000 ADT: 10,000
BREAKFAST HILL RD
UnknownOver: I-95
1.1 MI NORTH HAMPTON TL, Rockingham, NH
Built 1972 ADT: 62,595
OCEAN ROAD
UnknownOver: I-95
0.3 MI PORTSMOUTH TL, Rockingham, NH
Built 1972 ADT: 66,160
NH 84
UnknownOver: I-95
.25 MI N. SEABROOK T.L., Rockingham, NH
Built 1975 ADT: 84,000
NH 88
UnknownOver: I-95
.4 MI W. JCT RT 1, Rockingham, NH
Built 1975 ADT: 84,000
I-95 RAMP
UnknownOver: NH101
AT I-95 INTERCHANGE, Rockingham, NH
Built 1976 ADT: 41,000
NH101 EB
UnknownOver: I-95
2.0 MI FROM EXETER TL, Rockingham, NH
Built 1999 ADT: 66,160
NH101 WB
UnknownOver: I-95
HAMPTON, Rockingham, NH
Built 2000 ADT: 66,160
NH 27
UnknownOver: I-95
.5 MI N. HAMPTON T.L., Rockingham, NH
Built 1976 ADT: 63,884
I-95
UnknownOver: ACCESS ROAD
.3 MI FROM JCT RT 101, Rockingham, NH
Built 1950 ADT: 4,900
TOWLE FARM ROAD
UnknownOver: I-95
0.8 MI HAMPTON FALLS TL, Rockingham, NH
Built 1974 ADT: 84,000
NH 27
UnknownOver: NH101
.3 MI FROM JCT. I-95, Rockingham, NH
Built 1996 ADT: 20,000
TOWLE FARM ROAD
UnknownOver: NH101
0.3 MI FROM JCT. RT 95, Rockingham, NH
Built 1995 ADT: 18,000
NH101
UnknownOver: US 1 SB
2.3 MI. FROM JCT. RT 95, Rockingham, NH
Built 1963 ADT: 20,373
NH101
UnknownOver: US 1 NB
2.3 MI. FROM JCT. I-95, Rockingham, NH
Built 1963 ADT: 14,000
I-93 SB
UnknownOver: NH 28
1.7 MI S MANCHESTER CL, Rockingham, NH
Built 2013 ADT: 14,000
I-93 NB
UnknownOver: NH 28
1.7 MI S MANCHESTER TL, Rockingham, NH
Built 2014 ADT: 14,000
I-93 SB
UnknownOver: STONEHENGE ROAD
1.0 MI SO JCT RT 28, Rockingham, NH
Built 1996 ADT: 3,600
I-93 NB
UnknownOver: STONEHENGE ROAD
1.0 MI S JCT RT 28, Rockingham, NH
Built 1995 ADT: 3,600
ASH STREET
UnknownOver: I-93
0.7 MI N JCT NH 102, Rockingham, NH
Built 2019 ADT: 69,000
NH102
UnknownOver: I-93
0.7 MI N Derry T/L, Rockingham, NH
Built 2018 ADT: 71,000
WOODBURY AVENUE
UnknownOver: SP TPK,US 4,NH 16
0.8 MI FR PISCATAQUA DR, Rockingham, NH
Built 2015 ADT: 53,200
I-95(RAMP B-D)
UnknownOver: I-95
0.2 MI N OF HAMPTON TL, Rockingham, NH
Built 1976 ADT: 63,884
SOUTH ROAD
UnknownOver: I-95
0.7 MI JCT 101D, Rockingham, NH
Built 1975 ADT: 66,160
NH111
UnknownOver: I-95
1.2 MI JCT RTE 1, Rockingham, NH
Built 1975 ADT: 63,884
WALNUT AVE
UnknownOver: I-95
0.5 MI JCT NH151, Rockingham, NH
Built 1975 ADT: 63,884
NH151
UnknownOver: I-95
1.1 MI JCT 101D, Rockingham, NH
Built 1975 ADT: 66,160
NH 33
UnknownOver: I-95
3.0MI S OF MAINE S/L, Rockingham, NH
Built 1971 ADT: 97,000
SHERBURNE ROAD
UnknownOver: I-95
2.8MI S OF MAINE S/L, Rockingham, NH
Built 1971 ADT: 69,000
I-95 SB CONNECTOR
UnknownOver: I-95 NB RAMP
SP TPK,I-95 INTERCHANGE, Rockingham, NH
Built 1972 ADT: 9,000
NH 33
UnknownOver: US 1 BYPASS
0.6MI FROM JCT RT 1, Rockingham, NH
Built 2013 ADT: 11,000
Showing 251-300 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.