Worst Bridges in New Hampshire

Bridges with the lowest condition ratings in New Hampshire. New Hampshire has 191 bridges in poor condition (7.5% of 2,542 total bridges).

2,542

Total Bridges

7.5%

In Poor Condition

191

Poor Bridges

191

Rating 0-4

Understanding Bridge Conditions in New Hampshire

New Hampshire's bridge infrastructure reflects decades of construction, maintenance, and replacement decisions influenced by geography, climate, traffic patterns, and available funding. With 191 bridges currently rated in poor condition (7.5% of the total inventory), understanding what these ratings mean helps residents and policymakers make informed decisions about infrastructure investment.

Federal inspectors evaluate three key components on every highway bridge: the deck (the driving surface and its immediate supports), the superstructure (beams, girders, trusses, or other primary load-carrying members), and the substructure (piers, abutments, and foundations that transfer loads to the ground). Each component receives a rating from 0 to 9, with the lowest of these three ratings determining the overall condition category. A rating of 4 or below classifies a bridge as “poor,” indicating significant structural deterioration that warrants prioritized attention.

Poor-rated bridges remain safe for use at their posted limits because federal law requires that any bridge with load-carrying deficiencies be either repaired, posted with weight restrictions, or closed. Many poor-rated bridges receive more frequent inspections than the standard 24-month cycle, allowing engineers to monitor deterioration rates and ensure conditions have not worsened beyond safe operating limits. Weight restrictions protect the structure while allowing continued service until rehabilitation or replacement can be funded and constructed.

Infrastructure investment decisions involve difficult trade-offs between maintaining aging structures and building new capacity. Bridges listed below represent the most deteriorated structures in New Hampshire's inventory, where rehabilitation or replacement investment would have the greatest impact on improving overall infrastructure condition. Understanding where these bridges are located helps communities advocate for appropriate funding and plan alternative routes when load restrictions affect commercial traffic.

Condition Rating Scale

0-2

Failed to Critical

Closed or severely restricted. Major deterioration requiring immediate action.

3-4

Serious to Poor

Significant deterioration affecting capacity. Often weight-restricted.

5-6

Fair

Minor deterioration visible. Maintenance recommended but not urgent.

7-9

Good to Excellent

Components in sound condition with no significant deficiencies.

Lowest Rated Bridges in New Hampshire

191 bridges rated 0-4 on the federal condition scale, sorted by lowest rating first. Showing first 50 — click below to expand.

RankBridgeRatingYear BuiltCondition
#1TOWNHOUSE ROAD

over NORTHEAST POND

NH-ME SL

01948Poor
#2BRIDGE STREET

over CONNECTICUT RIVER

VERMONT STATE LINE

11930Poor
#3CHRISTIAN HILL RD

over NHRR(ABD)

50 FT FROM SOUTH GROVE S

11930Poor
#4THORNTONS FERRY RD

over BEAVER BROOK

3.2 MI FR MERRIMACK TL

11970Poor
#5WHIPPLE HILL ROAD

over ROARING BROOK

0.5 MI. RTE.119

11950Poor
#6GRIFFIN MILL ROAD

over MAPLE FALLS BROOK

300 YDS N. OF NH 121

11850Poor
#7HILL ROAD

over DARBY BROOK

.08 MI FR DINSMORE HILL

11970Poor
#8DOUGHERTY LANE

over MID BR PISCATAQUOG RIVER

0.8 MI FR SANDERS HILL R

12004Poor
#9PARADISE ROAD

over SUGAR RIVER

380 FT. RTE.11

11976Poor
#10HIGH BRIDGE ROAD

over ARCHERTOWN BROOK

150FT W TILLOTSON RD JCT

11940Poor
#11MAPLE STREET

over BRANCH RIVER

0.02MI. RTE 153

11940Poor
#12SHOP ROAD

over NEEDLE SHOP BROOK

0.8 MI N NEW CHESTER RD

11930Poor
#13OAK STREET

over CSX

DOVER-ROLLINSFORD TL

21890Poor
#14CATE STREET

over HODGSON BROOK

.2 WEST OF BARTLETT St.

21940Poor
#15DUDLEY ROAD

over LAMPREY RIVER

.23 MI JCT 101

21914Poor
#16CLOTHESPIN BR ROAD

over BLACKWATER RIVER

0.88MI NH127

21954Poor
#17JOHNSON HILL ROAD

over WEST BRANCH BROOK

1.5 MI MARSHALL HILL RD

21950Poor
#18GRANITE ROAD

over SOUTH RIVER

0.3MI. RTE 153

21920Poor
#19TEMPLETON TURNPIKE

over PRIEST BROOK

1.9MI. RTE 119

21984Poor
#20US202

over NHRR CONSTITUTION AV.

.1 MI WEST JCT I-93

31958Poor
#21NH 9(LOUDON ROAD)

over MERRIMACK RIVER

0.1 MI EAST JCT I-93

31966Poor
#22US 1

over CSX(ABD)

0.1 MI FROM N HAMPTON TL

31936Poor
#23US 1

over CSX

1.1MI FROM RYE TL

31935Poor
#24NH 12

over S BRANCH ASHUELOT RIVER

1.5 MI S TO TROY CENTER

31941Poor
#25MAPLEWOOD AVENUE

over NORTH MILL POND

0.2 MI E JCT US 1 BYPASS

31940Poor
#26NH152

over NORTH RIVER

5.15MI. NW LEE TL

31925Poor
#27NH 1B

over LITTLE HARBOR

1.1 MI JCT RT 1-A

31942Poor
#28MAPLE AVE

over BLACK BROOK

DOWNTOWN KEENE

31961Poor
#29NH 32

over MARTIN BROOK

1.48 MI. N. RICHMOND TL

31929Poor
#30US202 NH 9

over ASH BROOK

1 MI FROM CURRIER RD

31970Poor
#31NH 11

over SUCKER BROOK

0.4 MI FROM FRANKLIN T.L.

31929Poor
#32US 4

over BLACKWATER RIVER

0.3 MI FROM SALISBURY TL

31933Poor
#33EAST THETFORD ROAD

over CONNECTICUT RIVER

0.1 MI FROM VERMONT SL

31937Poor
#34RIVER ROAD

over PISCATAQUOG RIVER

0.5 MI FROM NH 77

31940Poor
#35NH127

over WARNER RIVER

.5 MI WEBSTER T.L.

31937Poor
#36TEMPLE ROAD

over BLOOD BROOK

0.02 MI SW JCT NH101

31901Poor
#37TRUES BROOK ROAD

over BLOODS BROOK

0.4 MI FR PLAINFIELD TL

31952Poor
#38NH 12A

over SUGAR RIVER

.1 MI. FROM JCT. RTE. 103

31967Poor
#39NH175

over PEMIGEWASSET RIVER

0.05 MI FROM JCT RTE 3

31939Poor
#40POTATO ROAD

over INDIAN RIVER

1.5 MI FROMENFIELD TL

31930Poor
#41POND ROAD

over CSX

0.6 MI. KINGSTON TL

31920Poor
#42DELTA DRIVE

over I-93 US 4

.6 MI NORTH OF JCT. US 4

31958Poor
#43GRIST MILL HILL RD

over INDIAN RIVER

2.01 MI FROM GRAFTON TL

31956Poor
#44BOG ROAD

over CONNECTICUT RIVER

0.02 MILE EAST OF VT. S L

31893Poor
#45SCRIBNER ROAD

over EXETER RIVER

0.59MI. RTE 107

31941Poor
#46FOWLER RIVER ROAD

over FOWLER RIVER

5.2MI FR TUFTONBORO TL

31930Poor
#47RIVER ROAD

over MAD RIVER

0.63MI. RTE 111

31986Poor
#48OLD COUNTY RD N

over COLLINS BROOK

2.4 MI. DEERING TL

31981Poor
#49CENTENARY AVENUE

over NHRR

TOWN RD

31940Poor
#50CHICKWOLNEPY ROAD

over CHICKWOLNEPY STREAM

1.2 M FR E. SIDE RIVER RD

31950Poor
#51LEIGHTON MEADOW RD

over PHILLIPS BROOK

100 FT FR SULLIVAN RD 61

31940Poor
#52PUTNAM ROAD

over BROOK

TOWN RD

31930Poor
#53FDR 35

over DOUGLAS BROOK

MAP 32

31950Poor
#54FISH HATCHERY ROAD

over PATCH BROOK

0.17MI NH25

31930Poor
#55ON-ORBIT DRIVE

over GARDNER-JOE ENGLISH STRE

1.2 MILES FROM MAIN GATE.

31959Poor
#56I-89

over SOUTH STREET

BOW INTERCHANGE

41959Poor
#57I-293 FEE TPK

over STARK WAY

1.9MI S HOOKSETT T.L.

41956Poor
#58I-393 US 4 US202

over I-93

0.4 MI. E. JCT US 3

41958Poor
#59FEE TPK SB

over PENNICHUCK BROOK

NASHUA-MERRIMACK T.L.

41954Poor
#60I-393 US 4 US202

over FORT EDDY RD

0.2MI E JCT I-93

41980Poor
#61US 3 NH 3A

over I-293 NH 3A CSX MERR R

0.7 MI BEDFORD TL

41923Poor
#62I-293 NH 3A TPK N

over BLACK BROOK

2.5 S HOOKSETT TL

41956Poor
#63NH 16 SP TPK SB

over COCHECO RIVER

3.6 MI. FROM ROCHESTER TL

41957Poor
#64I-89 NB

over US 4 NH 10

2.6 MI FROM VT SL

41966Poor
#65NH 16 SP TPK NB

over COCHECO RIVER

3.6 MI FROM ROCHESTER TL.

41957Poor
#66I-89 NB

over CONNECTICUT RIVER NECRR

0.04 MI FROM VT SL.

41966Poor
#67NH 16 SP TPK NB

over NH108 CSX(ABD)

0.2 MI FROM JCT. RTE 16

41957Poor
#68I-293 NH 3A TPK S

over BLACK BROOK

2.5MI S HOOKSETT T.L.

41956Poor
#69I-89 SB

over CONNECTICUT RIVER NECRR

0.04 MI FROM VT. SL.

41966Poor
#70NH 16 SP TPK SB

over NH108 CSX(ABD)

0.2 MI FROM JCT. RT 16

41957Poor
#71I-89 SB

over TURKEY POND

1.5 MI NW JCT RT 13

41959Poor
#72I-89 NB

over TURKEY POND

1.5 MI NW OF JCT RT 13

41959Poor
#73US202 NH101

over CONTOOCOOK RIVER

2.5 MI. W. DUBLIN TL

41958Poor
#74US 3

over BABOOSIC BROOK

5.9 MI N NASHUA TL

41933Poor
#75NH125

over ISINGLASS RIVER

.1 MI BARRINGTON T.L.

41951Poor
#76SALMON STREET EB

over MERRIMACK R CSX RD RAMP

0.3MI W OF JCT RT 3

41970Poor
#77US 3

over SOUHEGAN RIVER

0.03 MI FROM RAILROAD AVE

41921Poor
#78US 4 MECHANIC ST

over MASCOMA RIVER

5.4 MI FROM HANOVER TL

41977Poor
#79NH 13

over SOUHEGAN RIVER

0.1 MI FROM MAPLE ST

41931Poor
#80NH101

over OTTER BROOK

1.5 MI FROM MARLBORO TL

41933Poor
#81NH 11

over MERRYMEETING RIVER

8.5 MI FROM GILFORD TL

41934Poor
#82NH 28

over SUNCOOK RIVER

AT PEMBROKE TL

41958Poor
#83NH 1A

over HAMPTON RIVER

0.1 MI FROM SEABROOK TL

41949Poor
#84NH119

over CONNECTICUT RIVER

AT VERMONT STATE LINE

41920Poor
#85NH119

over CONNECTICUT RIVER

0.3 MI E VERMONT SL

41920Poor
#86NH 12A

over NHRR

100 FT FROM JCT RTE 10

41949Poor
#87NH 12

over NHRR(ABD)

0.3MI TO TROY CENTER

41957Poor
#88NH120 PARK LOT PED

over NHRR(ABD)

.1 MI FROM JCT RTE 4

41969Poor
#89US202 NH123

over CONTOOCOOK RIVER

2.2 MI TO GREENFIELD TL

41942Poor
#90NH112 KANCAMAGUS

over PEMIGEWASSET RIVER

0.1 MI E JCT ROUTE 3

41933Poor
#91NH 3A

over NEWFOUND RIVER

1.2 MI N OF JCT RTE 104

41924Poor
#92NH 12

over MILL BROOK

4.3 MI TO WALPOLE TL

41941Poor
#93BABOOSIC LAKE ROAD

over FEE TPK

.8 MI FROM SOUHEGAN R

41954Poor
#94GULF ROAD

over SALMON FALLS RIVER

0.1 MI FROM MAINE SL

41950Poor
#95MAIN STREET

over BEAVER BROOK

1.75 MI JCT 128

41900Poor
#96BRIDGE STREET

over SPICKET RIVER

1.0MI MASS SL

41900Poor
#97NH 11

over POOR FARM BROOK

1.7 MI S ALTON TL

41966Poor
#98US 2

over PEA BROOK

0.8 MI FROM GORHAM TL

41932Poor
#99NH 12

over NECRR

4.9 MI. FROM WALPOLE TL

41959Poor
#100NH 31

over STONY BROOK

0.1 MI FM LYNDEBOROUGH TL

41929Poor
#101NH 3A

over NEWFOUND RIVER

2.0 MI. FROM HILL T.L.

41949Poor
#102NH111A

over EXETER RIVER

0.6 MI DANVILLE T.L.

41978Poor
#103NH 49

over MAD RIVER

1.9 MI SW WATERVILLE T L

41979Poor
#104CORNISH TOLL BR RD

over CONNECTICUT RIVER

VERMONT STATE LINE

41866Poor
#105US 3

over LOST RIVER

5.6 MI FROM THORNTON TL

41931Poor
#106NH 11B

over GUNSTOCK RIVER

0.6 MI N JCT NH 11-A

41941Poor
#107NH 11

over NHRR(ABD)

0.6 MI FROM FRANKLIN TL

41929Poor
#108NH 11

over SUCKER BROOK

.3 MI FROM FRANKLIN T.L.

41929Poor
#109ANTRIM ROAD

over MONADNOCK MILL CANAL

0.39 MI FR CONTOOCOOK VA

41922Poor
#110US 4

over SMITH RIVER

4.6 MI FROM WILMOT TL

41929Poor
#111NH 49

over PEMIGEWASSET RIVER

0.25 MI E JCT US 3

41928Poor
#112HALL ROAD

over LITTLE COHAS BROOK

0.73 MI FR HARVEY RD

41974Poor
#113WILTON ROAD

over SOUHEGAN RIVER

260FT RTE 31

41938Poor
#114NUTTING ROAD

over CONTOOCOOK RIVER

0.4 MI FR CROSS ST

41905Poor
#115COCHECO ROAD

over COCHECO RIVER

0.15MI. RTE 75

41953Poor
#116SCHOOL STREET

over AMMONOOSUC RIVER

214 FT FROM NH RTE 112

41960Poor
#117HANSON ROAD

over EXETER RIVER

75FT. NH102

41932Poor
#118CHESHAM ROAD

over MINNEWAWA BROOK

0.3 MI FR DUBLIN TL

41939Poor
#119NH 18

over CONNECTICUT RIVER

NH-VT SL

41934Poor
#120NH127

over BLACKWATER RIVER

4.8 MI FROM WARNER TL

41941Poor
#121NH118

over INDIAN RIVER

2.3 MI FROM DORCHESTER TL

41948Poor
#122PLAINS ROAD

over SUGAR RIVER

0.1 MI JCT RTE 12

41974Poor
#123NH103

over I-89 SB WARNER RIVER

3.6 MI N HOPKINTON T.L.

41966Poor
#124US 3

over BOG BROOK

1.2 MI FROM PLYMOUTH TL

41929Poor
#125TIRRELL HILL ROAD

over BLACK BROOK

1.9MI Fr Goffstwn Back RD

41994Poor
#126NH142

over AMMONOOSUC RIVER

2.2 MI FROM WHITEFIELD TL

41927Poor
#127RIVER ROAD SOUTH

over PARTRIDGE BROOK

0.72 MI NH63

41937Poor
#128DORCHESTER ROAD

over GRANT BROOK

2.1 MI FROM JCT RTE 10

41952Poor
#129NH 25

over OLIVERIAN BROOK

1.0 MI HAVERHILL T.L.

41960Poor
#130NH 16A

over E BR SACO RIVER

1.9 MI CONWAY TL

41928Poor
#131WHITCOMB MILLS RD

over WHITE BROOK

0.06 MI FR ARCH ST

41940Poor
#132NH 25A

over BRACKETT BROOK

9.9 MI FROM VERMONT SL

41929Poor
#133NH 25A

over BAKER POND BROOK

10.2 MI FROM VERMONT SL

41929Poor
#134BRIDGE STREET

over NECRR

100 FT FROM NH RTE 12

41992Poor
#135SPRING STREET

over COCHECO RIVER

1.38MI RTE 11

41926Poor
#136STAGE ROAD

over BLOW-ME-DOWN BROOK

2.0 MI SE JCT 12A

41954Poor
#137CONTOOCOOK FALLS R

over CONTOOCOOK RIVER

0.3 MI. HENNIKER TL

41933Poor
#138BEAVER BROOK ROAD

over BEAVER BROOK

0.4 MI. AMHERST TL

41932Poor
#139NH175

over PEMIGEWASSET RIVER

0.6 MI EAST JCT US 3

41976Poor
#140SCOTLAND ROAD

over ROARING BROOK

0.23MI NH119

41955Poor
#141LAFAYETTE ROAD

over HAM BRANCH

0.12MI. RTE 116

41920Poor
#142WHITEHALL ROAD

over POWWOW RIVER

0.8 MI FR MASS SL

41976Poor
#143BEALS ROAD

over BABOOSIC BROOK

33 FT FR MERRIMACK TL

41928Poor
#144COAKLEY ROAD

over HODGSON BROOK

1 MI. WEST OF BYPASS 1

41940Poor
#145SHEPARD HOME ROAD

over EXETER RIVER

0.8MI. NH102

41986Poor
#146DUPAW GOULD ROAD

over LANCY BROOK

1.4 MI FR MCINTOSH RD

41987Poor
#147CARLETON HILL ROAD

over MOHAWK RIVER

0.15 MI SE JCT NH 26

41935Poor
#148SAND HILL ROAD

over BAKER RIVER

.06 MI FROM NH RTE 25

41928Poor
#149WALES BRIDGE ROAD

over SOUCOOK RIVER

1.3 MI FROM CONCORD TL

41934Poor
#150WASHBURN ROAD

over PATTEN BROOK

8.11 MI FROM E HILL RD

41950Poor
#151NORTH ROAD

over ANDROSCOGGIN RIVER

0.32 MI N JCT US 2

41900Poor
#152WINDY ROW ROAD

over MCDOWELL RESERVOIR

0.6 MI FR PETERBORO TL

41950Poor
#153ARCHERTOWN ROAD

over JACOBS BROOK

.3 Mi.From NH10

41930Poor
#154HILL ROAD

over PERRY STREAM

0.2 MI FROM US RTE 3

41860Poor
#155EASTSIDE ROAD

over MARTINS BROOK

0.77MI WARREN TL

41940Poor
#156OLD DEERFIELD ROAD

over BROOK

185 FT FROM NH RTE 43

41920Poor
#157HILLDALE AVE

over POWWOW RIVER

0.8 MI FR NEWTON TL

41920Poor
#158LEAVITT HILL ROAD

over BLOW-ME-DOWN-BROOK

1.4 MI FR CORBIN PARK

41950Poor
#159DRAKE HILL ROAD

over MEADOW BROOK

SE NH 16

41930Poor
#160FDR 17

over BURNT KNOLL

MAP 24

41975Poor
#161COLE HILL ROAD

over FOWLER RIVER

0.5 MI FROM SHIN VALLEY

41930Poor
#162BRIDGE ROAD

over BLACKWATER RIVER

0.1 MI S NH 11

41882Poor
#163LAST STREET

over SUCKER BROOK

0.03 MI NH 11

41936Poor
#164LIBERTY FARM ROAD

over NORTH BRANCH RIVER

0.13MI. NH9

41991Poor
#165RIVER ROAD

over CLAY BROOK

.23 MI S. PLYMOUTH T.L.

41900Poor
#166PERCH POND ROAD

over RYAN BROOK

1.9 MI FR HOLDERNESS TL

41940Poor
#167CRESSY HILL ROAD

over RAND BROOK

0.4MI. LYNDEBORO TL

41940Poor
#168SOUTH ROAD

over MINNEWAWA BROOK

0.9 MI FR DUBLIN TL

41950Poor
#169GLEASON FALLS ROAD

over BEARDS BROOK

2.6 MILE FR NH RTE 9

41900Poor
#170JONES ROAD

over BEARDS BROOK

1.3 MI FR NH RTE 31

41900Poor
#171PLAINS ROAD

over MILL BROOK

1.0 MI FROM LYMAN TL

41975Poor
#172STEARNS BROOK ROAD

over STEARNS BROOK

0.4 MI FR SUCCESS TL

41950Poor
#173MURPHY DAM ROAD

over DAM SPILLWAY

0.2 MI FROM US RT 3

41938Poor
#174BROOK ROAD

over SALMON BROOK

0.1 MI FROM HALE RD

41900Poor
#175CRANE HILL ROAD

over GALE RIVER

TOWN RD

41928Poor
#176WALKER BROOK ROAD

over FRAZIER BROOK

0.5 MI FR WILMOT T/L

41950Poor
#177JACK WELLS ROAD

over FRAZIER BROOK

0.1 MI FR WILMOT T/L

41950Poor
#178TUNNEL BROOK ROAD

over WILD AMMONOOSUC RIVER

0.6 MI N. BENTON T.L.

41900Poor
#179FDR 304

over LITTLE RIVER

MAP 10

41975Poor
#180FDR 12

over BURNT MILL BROOK

MAP 14

41947Poor
#181NFSR XH22

over HUBBARD BROOK

MAP 36

41961Poor
#182FDR 29

over WALKER BROOK

MAP 29

41975Poor
#183REC AREA ACCESS RD

over OTTER BROOK

8.05 KM N OF KEENE

41967Poor
#184REC AREA ACCESS RD

over OTTER BROOK

8.05 KM N OF KEENE

41967Poor
#185VILLAGE ROAD

over CLEMENT BROOK

0.5 MI. US2

41929Poor
#186MOUNTAIN ROAD

over COLD BROOK

0.7 MI. RTE.25

41900Poor
#187FRYE MILL ROAD

over BURTON POND OUTLET

1.2Mi.Fr.Issac Frye Hwy.

41920Poor
#188RECYCLE WAY

over ASHUELOT RIVER

0.04MI NH119

41947Poor
#189SHEEPBORO ROAD

over BERRYS RIVER

1.22 MI ROCHESTER TL

41983Poor
#190NO DATA ENTERED

over NO DATA ENTERED

NO DATA ENTERED

41990Poor
#191OLD NH 16

over THOMPSON BROOK

0.2 MI EAST JCT NH 16

41931Poor

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Data Source: Federal Highway Administration (FHWA) National Bridge Inventory 2024

Bridge inspection data is typically updated every 24 months. Conditions may have changed since the last inspection.

“Structurally deficient” does not mean a bridge is unsafe or likely to collapse. It indicates that one or more key structural elements are in poor or worse condition. Bridges are inspected regularly and may have load restrictions in place.

This data is for informational purposes only and should not be used for route clearance or vehicle weight decisions.