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

LAMBERT ROAD

Good

Over: RACE BROOK

0.1 MI S OF ROUTE 152, New Haven, CT

Built 1946 Load: 21.4 t ADT: 2,200

WALNUT STREET

Good

Over: HOCKANUM RIVER

200 FT. FROM JCT. RTE. 44, Hartford, CT

Built 1942 Load: 21.7 t ADT: 6,300

FLATBUSH AVENUE

Good

Over: BUSWAY & AMTRAK RR

JUNC FLATBUSH & BUSWAY, Hartford, CT

Built 2013 Load: 22.0 t ADT: 19,900

US ROUTE 7

Good

Over: HOUSATONIC RIVER

GAYLORDSVILLE, Litchfield, CT

Built 1991 Load: 22.4 t ADT: 3,200

INTERSTATE 91 SB

Good

Over: KENEY PARK RD& MEADOW BK

0.1 MILE NORTH OF EXIT 34, Hartford, CT

Built 1991 Load: 23.0 t ADT: 64,600

RIVER ROAD

Good

Over: QUANDUCK BROOK

0.5 MI EAST OF MAIN ST, Windham, CT

Built 1983 Load: 23.0 t ADT: 401

FORBES STREET

Good

Over: PORTER BROOK

100 FT.SOUTH OF MAPLE ST., Hartford, CT

Built 1996 Load: 23.3 t ADT: 6,700

GRAY ROAD

Good

Over: NORTH BROOK

AT JCT OF MAPLE HOLLOW RD, Litchfield, CT

Built 1956 Load: 23.3 t ADT: 40

ROUTE 207

Good

Over: SUSQUETONSCUT BROOK

0.7 MILES EAST OF RTE 87, New London, CT

Built 1990 Load: 24.6 t ADT: 4,000

WEST THOMPSON ROAD

Good

Over: SPILLWAY CHANNEL

3.22 KM NORTH OF PUTNAM, Windham, CT

Built 1965 Load: 24.7 t ADT: 3,800

PLYMOUTH ROAD

Good

Over: ROCK BROOK

APP 200' N OF COVENTRY LN, Litchfield, CT

Built 1997 Load: 24.9 t ADT: 657

STODDARD ROAD

Good

Over: BANTAM RIVER

OFF WEST MORRIS ROAD, Litchfield, CT

Built 2004 Load: 24.9 t ADT: 250

WHITE ROCK RD

Good

Over: PAWCATUCK RIVER

0.2 MI E OF ROUTE 2, New London, CT

Built 1996 Load: 24.9 t ADT: 3,502

SR 714

Good

Over: FARMILL RIVER

2.0 MI N OF ROUTE 108, Fairfield, CT

Built 1993 Load: 25.3 t ADT: 16,500

ROUTE 178

Good

Over: BEAMAN BROOK

1.2 MI EAST OF ROUTE 189, Hartford, CT

Built 2022 Load: 25.6 t ADT: 10,300

I-95 NB TR 806

Good

Over: BROAD STREET

0.2. MI N OF ROUTE 8, Fairfield, CT

Built 1959 Load: 25.9 t ADT: 19,900

SR 536

Good

Over: QUINNIPIAC RIVER

.4 MILE EAST OF ROUTE 10, Hartford, CT

Built 1946 Load: 26.2 t ADT: 6,100

ROUTE 322

Good

Over: MISERY BROOK

1.6 MI W OF I-691, Hartford, CT

Built 1994 Load: 26.2 t ADT: 10,600

ROUTE 142

Good

Over: FARM RIVER

0.2 MI W OF ROUTE 100, New Haven, CT

Built 1973 Load: 26.6 t ADT: 11,900

BRIDGE STREET

Good

Over: WEPAWAUG RIVER

0.2 MI S OF US ROUTE 1, New Haven, CT

Built 1997 Load: 26.6 t ADT: 2,330

US ROUTE 6

Good

Over: CEDAR SWAMP BROOK

1 MILE WEST OF ROUTE 97, Windham, CT

Built 1993 Load: 26.6 t ADT: 9,000

ROUTE 140

Good

Over: SCANTIC RIVER

0.1 MILE WEST OF RTE. 191, Hartford, CT

Built 1935 Load: 26.9 t ADT: 12,900

OLD NORTHFIELD RD

Good

Over: BRANCH BROOK

6.44 KM SW OF THOMASTON, Litchfield, CT

Built 1950 Load: 26.9 t ADT: 4

I-95 NB TR 806

Good

Over: S. FRONTAGE RD & LAF. ST

RAMP FROM 8 SB TO I-95 NB, Fairfield, CT

Built 2000 Load: 27.2 t ADT: 17,500

SR 707

Good

Over: LAKE WHITNEY

2M S OF JCT RT10 & SR 707, New Haven, CT

Built 1992 Load: 27.2 t ADT: 11,800

SSR 437

Good

Over: WINTHROP COVE

475 FT E OF ROUTE 32, New London, CT

Built 1973 Load: 27.5 t ADT: 2,600

RIVER STREET

Good

Over: FACTORY TUNNEL

0.1 MILE EAST OF RTE.14, Windham, CT

Built 1920 Load: 27.5 t ADT: 254

I-95 TR 813

Good

Over: EAST STREET & PWRR

AT WEST END OF Q-BRIDGE, New Haven, CT

Built 1958 Load: 27.9 t ADT: 17,200

MOOSE HILL ROAD

Good

Over: AMTRAK RAILROAD

0.1 MI N OF ROUTE 146, New Haven, CT

Built 1925 Load: 28.5 t ADT: 650

I-291 EASTBOUND

Good

Over: TOLLAND TPKE & CSRR

0.40 MI east of Batson Rd, Hartford, CT

Built 1993 Load: 28.8 t ADT: 18,300

ROUTE 147

Good

Over: COGINCHAUG RIVER

0.7 MI S OF ROUTE 157, Middlesex, CT

Built 2013 Load: 28.8 t ADT: 6,000

ROUTE 87

Good

Over: TEN MILE RIVER

LEBANON COLUMBIA TOWNLINE, New London, CT

Built 1990 Load: 28.8 t ADT: 3,200

BIA ROUTE 407

Good

Over: UNKNOWN STREAM

4.7KM NE LEYARD, CT, New London, CT

Built 1993 Load: 29.3 t ADT: 1,000

NORTH AVENUE #2

Good

Over: ASPETUCK RIVER

50 FT W OF COLEYTOWN RD, Fairfield, CT

Built 1957 Load: 29.5 t ADT: 535

ROUTE 150

Good

Over: QUINNIPIAC RIVER

600 FT E OF ROUTE 15, New Haven, CT

Built 1991 Load: 29.5 t ADT: 8,500

ROUTE 156

Good

Over: BRIDE BROOK

0.1 MI E OF SR 449, New London, CT

Built 1994 Load: 29.5 t ADT: 8,200

RIVERSIDE AVENUE

Good

Over: METRO-NORTH RAILROAD

AT RIVERSIDE STATION, Fairfield, CT

Built 1895 Load: 29.8 t ADT: 10,596

MILL STREET

Good

Over: QUINNIPIAC RIVER

0.2 MI W OF ROUTE 10, Hartford, CT

Built 1955 Load: 29.8 t ADT: 3,162

ALLYNDALE ROAD

Good

Over: KONKAPOT RIVER

NORTH OF SODOM RD, Litchfield, CT

Built 1982 Load: 30.1 t ADT: 378

OLD KINGS HIGHWAY

Good

Over: LITTLE RIVER

0.25 MILE EAST ROUTE 97, Windham, CT

Built 2001 Load: 30.2 t ADT: 324

WEST MAIN STREET

Good

Over: WEPAWAUG RIVER

0.3 MI N OF ROUTE 162, New Haven, CT

Built 1928 Load: 30.5 t ADT: 8,470

ROUTE 69

Good

Over: SARGENT RIVER

2.8 MI N OF ROUTE 15, New Haven, CT

Built 1988 Load: 30.5 t ADT: 5,600

HART STREET

Good

Over: QUINNIPIAC RIVER

0.2 MI W OF ROUTE 10, Hartford, CT

Built 1987 Load: 30.6 t ADT: 3,000

INTERSTATE-84 WB

Good

Over: BERKSHIRE ROAD

0.7 MI E OF FARMINGTON TL, Hartford, CT

Built 2022 Load: 30.8 t ADT: 69,200

NORTH SHORE ROAD

Good

Over: BANTAM RIVER

.5 MILE EAST OF RTE.202, Litchfield, CT

Built 1980 Load: 30.8 t ADT: 444

ROUTE 9 RAMP 027

Good

Over: PONSET BROOK

RTE. 9 SB EXIT 9 OFF RAMP, Middlesex, CT

Built 1965 Load: 30.8 t ADT: 4,000

ROUTE 9 RAMP 026

Good

Over: PONSET BROOK

RTE. 9 NB EXIT 9 OFF RAMP, Middlesex, CT

Built 1965 Load: 30.8 t ADT: 800

ROUTE 81

Good

Over: PONSET BROOK

0.2 MI S OF ROUTE 154, Middlesex, CT

Built 1983 Load: 30.8 t ADT: 3,300

SPRING STREET

Good

Over: DEEP RIVER

150 FT W OF ROUTE 154, Middlesex, CT

Built 1982 Load: 30.8 t ADT: 1,374

SILVER BIRCH LANE

Good

Over: BROOK

0.4 MILE WEST OF ROUTE 81, Middlesex, CT

Built 1980 Load: 30.8 t ADT: 780

Showing 3,101-3,150 of 4,277 bridges

Related

All states → | National rankings → | Understanding conditions → | SD bridges explained →
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.