State profile · Below national median SD

Connecticut bridge safety

Condition ratings, load ratings, and structural-deficiency data for every public highway bridge in Connecticut — drawn straight from the FHWA National Bridge Inventory.

4,277
Public bridges
24.0%
Good condition
4.0%
Poor condition
4.0%
Structurally deficient

Total Bridges

4,277

Public highway bridges in Connecticut

Good Condition

24.0%

1,025 bridges rated 7-9

-26.0pp vs 50% benchmark

Poor Condition

4.0%

169 bridges rated 0-4

Structurally Deficient

4.0%

169 bridges flagged for repair priority

-3.0pp vs national avg 7.0%

Connecticut vs national bridge condition

Connecticut — Good condition share 24.0%
National avg

Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).

Connecticut — Structurally deficient share 13.2%
National avg

Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.0%.

Condition Distribution

Bridge inventory deck-condition mix — Connecticut (FHWA NBI)

Connecticut23.965396305821837%47.79050736497545%GoodFairPoorStructurally Deficient
Bridge inventory deck-condition mix — Connecticut (FHWA NBI)

Counties (8)

Fairfield 840 Hartford 893 Litchfield 466 Middlesex 304 New Haven 891 New London 431 Tolland 188 Windham 264

Connecticut vs nearby ranks

Adjacent states on the structurally deficient leaderboard (lower share = better)

States are ranked by share of bridges flagged structurally deficient — the FHWA classification for any span where deck, superstructure, or substructure carries a condition rating of 4 or below. Lower percentages indicate stronger maintenance funding and inspection follow-through. States here sit immediately above and below Connecticut on the same metric.

01

Alabama

3.35% top marginal rate
Structure
Progressive
Burden @ $100K
$13,471

27

Minnesota

3.63% top marginal rate
Structure
Progressive
Burden @ $100K
$11,969
Selected

09

Connecticut

3.95% top marginal rate
Structure
Progressive
Burden @ $100K
$4,277

47

Tennessee

3.97% top marginal rate
Structure
Progressive
Burden @ $100K
$20,426

24

Maryland

4.27% top marginal rate
Structure
Progressive
Burden @ $100K
$5,527

Bridges Needing Most Attention in Connecticut

Six lowest-condition bridges in Connecticut, ranked by composite NBI rating. Each is inspected at least every 24 months.

SHERMAN STREET

Structurally Deficient

Over: YANTIC RIVER

1 MILE WEST ROUTE 2, New London, CT

Built 1920 Load: 3.9 t

RIVER BANK ROAD

Structurally Deficient

Over: EAST BRANCH MIANUS RIVER

0.8 MI N OF ROUTE 15, Fairfield, CT

Built 1957 Load: 8.1 t ADT: 1,500

TRACY ROAD #1

Poor

Over: KITT BROOK

0.5 MI SOUTH OF ROUTE 14, Windham, CT

Built 1928 Load: 8.7 t ADT: 176

ROUTE 136

Poor

Over: SAUGATUCK RIVER

BETWEEN I-95 EXIT 17 & 18, Fairfield, CT

Built 1870 Load: 10.0 t ADT: 14,500

KENSINGTON ROAD

Poor

Over: MATTABESSET RIVER

0.2 MI S OF ROUTE 372, Hartford, CT

Built 1958 Load: 10.0 t ADT: 4,200

SR 664

Poor

Over: SNAKE MEADOW BROOK

3 MI NORTH OF ROUTE 14, Windham, CT

Built 1925 Load: 11.3 t ADT: 600

All Bridges in Connecticut

SOUTH MAPLE STREET

Good

Over: SCANTIC RIVER

1750 FT SOUTH OF RTE 190, Hartford, CT

Built 2010 Load: 51.5 t ADT: 2,500

PARK ROAD

Good

Over: TROUT BROOK

50' W. OF TROUT BROOK DR, Hartford, CT

Built 1956 Load: 51.5 t ADT: 3,448

EAST MAIN STREET

Good

Over: SUMNER BROOK

475 FT N OF ROUTE 17, Middlesex, CT

Built 1985 Load: 51.5 t ADT: 5,685

I-84 EASTBOUND

Good

Over: MAD RIVER

250' W OF HARPERS FERRY, New Haven, CT

Built 2018 Load: 51.5 t ADT: 44,000

I-84 WESTBOUND

Good

Over: MAD RIVER

250' W OF HARPERS FERRY, New Haven, CT

Built 2018 Load: 51.5 t ADT: 42,700

ROUTE 165

Good

Over: PACHAUG POND

.5 MI WEST OF ROUTE 201, New London, CT

Built 2014 Load: 51.5 t ADT: 2,000

ROUTE 183

Good

Over: SANDY BROOK

2 MILES NORTH OF RTE 182A, Litchfield, CT

Built 1958 Load: 51.7 t ADT: 850

ROUTE 219

Good

Over: MOUNTAIN BROOK

0.3 MILE SOUTH OF RTE. 20, Hartford, CT

Built 1959 Load: 51.8 t ADT: 6,900

ROUTE 2 WESTBOUND

Good

Over: ROARING BROOK

0.20 MI WEST OF ROUTE 83, Hartford, CT

Built 1964 Load: 51.8 t ADT: 22,700

NORTH BEAR HILL RD

Good

Over: NATCHAUG RIVER

0.4 MILE EAST OF RTE 198, Windham, CT

Built 2018 Load: 51.8 t ADT: 257

US ROUTE 7

Good

Over: REPTILE CROSSING

2 MI. NORTH OF RTE. 202, Fairfield, CT

Built 2009 Load: 52.2 t ADT: 25,100

ROUTE 179

Good

Over: CHERRY BROOK

.8 MI S OF BARKHAMSTED TL, Hartford, CT

Built 1956 Load: 52.2 t ADT: 2,100

W JOHNSON AVENUE

Good

Over: TEN MILE RIVER

0.5 MI W OF ROUTE 10, New Haven, CT

Built 1987 Load: 52.2 t ADT: 3,911

US RTE 6 TR 803

Good

Over: FRANKLIN STREET

.1 MI NORTH OF US ROUTE 6, Windham, CT

Built 1963 Load: 52.2 t ADT: 900

NORMAN ROAD

Good

Over: PACHAUG RIVER

0.2 MI SOUTH OF ROUTE 201, New London, CT

Built 2019 Load: 52.5 t ADT: 691

WEST WASHINGTON ST

Good

Over: COPPER MINE BROOK

0.7 MI EAST OF ROUTE 229, Hartford, CT

Built 2007 Load: 52.8 t ADT: 7,765

SR 833(CLAYTON RD)

Good

Over: KONKAPUT RIVER

.37 MI SOUTH OF MASS SL, Litchfield, CT

Built 1988 Load: 52.8 t ADT: 2,000

ROUTE 25

Good

Over: W. BRANCH PEQUONNOCK RVR

2 MILES NORTH OF RTE. 111, Fairfield, CT

Built 2019 Load: 53.1 t ADT: 18,800

ROUTE 176 -MAIN ST

Good

Over: MILL BROOK

0.6 MILE NORTH OF RTE 175, Hartford, CT

Built 1990 Load: 53.1 t ADT: 12,600

INTERSTATE-95 NB

Good

Over: OIL MILL ROAD

0.7 MI E OF US ROUTE 1, New London, CT

Built 1958 Load: 53.1 t ADT: 22,300

MAIN STREET

Good

Over: TANKERHOOSEN RIVER

0.4 MILE FROM ROUTE 83, Tolland, CT

Built 1885 Load: 53.1 t ADT: 21

RUSCOE ROAD

Good

Over: E BR SILVERMINE RIVER

WEST OF ROUTE 33, Fairfield, CT

Built 1991 Load: 53.2 t ADT: 822

PROSPECT STREET

Good

Over: P & W RAILROAD

EXIT FR LIBERTY ST NO 2, Middlesex, CT

Built 2010 Load: 53.3 t ADT: 4,295

ROUTE 66

Good

Over: COGINCHAUG RIVER

105 FT W OF ROUTE 157, Middlesex, CT

Built 1979 Load: 53.4 t ADT: 25,400

LAUREL STREET

Good

Over: AMTRAK, CNERR &CTFastrak

250' NORTH OF CAPITOL AVE, Hartford, CT

Built 1962 Load: 53.5 t ADT: 7,020

WEST STREET

Good

Over: P & W RAILROAD

0.1 MI SOUTH OF ROUTE 157, Middlesex, CT

Built 2019 Load: 53.5 t ADT: 4,572

ROUTE 146

Good

Over: BRANFORD RIVER

1.5 MI E. OF US ROUTE 1, New Haven, CT

Built 1996 Load: 53.5 t ADT: 5,900

STATE STREET

Good

Over: MILL RIVER

1TENTH EAST OF MILL RV ST, New Haven, CT

Built 2016 Load: 53.5 t ADT: 7,200

ROUTE 2 EASTBOUND

Good

Over: ROARING BROOK

2/10 OF MILE W OF RTE 83, Hartford, CT

Built 1964 Load: 53.8 t ADT: 22,700

ASPETUCK RIDGE RD

Good

Over: WEST ASPETUCK RIVER

.5 M NORTH OF BOARDMAN RD, Litchfield, CT

Built 1981 Load: 53.8 t ADT: 1,323

RIVER ROAD NO. 1

Good

Over: CHATFIELD HOLLOW BROOK

500FT W OF PAPER MILL RD, Middlesex, CT

Built 1960 Load: 53.8 t ADT: 357

SR 710

Good

Over: FULLING MILL BROOK

0.04 MI SO. OF EXIT 28 SB, New Haven, CT

Built 1998 Load: 53.8 t ADT: 3,500

NORTHFIELD ROAD

Good

Over: NAUGATUCK RIVER

LITCHFIELD-HARWINTON T.L., Litchfield, CT

Built 2011 Load: 53.9 t ADT: 520

RIVER STREET NO 1

Good

Over: MOOSUP RIVER

300' E. of Rt. 14, Windham, CT

Built 2001 Load: 54.0 t ADT: 240

ROUTE 8 SOUTHBOUND

Good

Over: JOHN STREET

0.6 MI N OF I-95, Fairfield, CT

Built 1968 Load: 54.1 t ADT: 45,500

I-84 RAMP 247

Good

Over: HOCKANUM RIVER

EXIT 63 I-84 EASTBOUND, Hartford, CT

Built 2017 Load: 54.1 t ADT: 11,400

BARRY ROAD

Good

Over: EIGHT MILE BROOK

0.5 MI W OF ROUTE 188, New Haven, CT

Built 2002 Load: 54.3 t ADT: 240

ROUTE 57

Good

Over: SAUGATUCK RIVER

NORTH OF ROUTE 15 EXIT 42, Fairfield, CT

Built 1930 Load: 54.4 t ADT: 13,700

OLD WHEELER LANE

Good

Over: ROARING BROOK

350' SOUTH OF ROUTE 177, Hartford, CT

Built 1964 Load: 54.4 t ADT: 627

ROUTE 189

Good

Over: MUDDY BROOK

1.1 MI NO. OF SIMSBURY TL, Hartford, CT

Built 1993 Load: 54.4 t ADT: 9,700

ROUTE 63

Good

Over: HOLLENBECK RIVER

0.3 MI N OF ROUTE 43, Litchfield, CT

Built 1960 Load: 54.4 t ADT: 2,800

US ROUTE 1

Good

Over: WEPAWAUG RIVER

425 FT S OF ROUTE 121, New Haven, CT

Built 2016 Load: 54.4 t ADT: 21,200

RUBBER AVENUE

Good

Over: LONG MEADOW POND BROOK

JCT HOADLEY ST &RUBBER AV, New Haven, CT

Built 1983 Load: 54.4 t ADT: 10,900

LOUIS ALLAN DRIVE

Good

Over: STREAM

0.2 MI W OF DEER PARK R, Fairfield, CT

Built 2004 Load: 54.8 t ADT: 83

ROUTE 4

Good

Over: W BRANCH NAUGATUCK RIVER

200 FT. EAST OF ROUTE 272, Litchfield, CT

Built 1989 Load: 55.1 t ADT: 11,000

GLENWOOD AVENUE

Good

Over: ALEWIFE COVE

0.2 MI E OF ROUTE 213, New London, CT

Built 1980 Load: 55.1 t ADT: 1,717

ROUTE 63

Good

Over: HOLLENBECK RIVER

1.1 MI S OF RTE 126 JCT, Litchfield, CT

Built 1960 Load: 55.3 t ADT: 3,300

US ROUTE 7

Good

Over: CARSE BROOK

2 MI N OF INT OF 7 & RT 4, Litchfield, CT

Built 1989 Load: 55.3 t ADT: 1,400

ROUTE 8

Good

Over: CROSS ROAD

AT EXIT 25, New Haven, CT

Built 1981 Load: 55.3 t ADT: 47,600

ROUTE 69

Good

Over: MAD RIVER

SOUTH ENT.BRASS CITY MALL, New Haven, CT

Built 1997 Load: 55.3 t ADT: 19,400

Showing 3,801-3,850 of 4,277 bridges

Related

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Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges Editorial.

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). A "structurally deficient" rating is a repair-priority signal, not a closure or unsafe-to-cross designation. Consult a qualified civil engineer before making decisions based on this data.

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.