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

ROUTE 72

Good

Over: PEQUABUCK RIVER

1 MILE NORTH OF ROUTE 69, Hartford, CT

Built 1995 Load: 43.4 t ADT: 12,000

I-84 & EXIT RAMP28

Good

Over: JUDD BROOK

0.3 MI W OF ROUTE 322, Hartford, CT

Built 1961 Load: 43.4 t ADT: 60,300

INTERSTATE-291 WB

Good

Over: MAIN STREET

0.3 MILE WEST OF EXIT 4, Hartford, CT

Built 1993 Load: 43.4 t ADT: 31,000

HILL STREET

Good

Over: MUDDY BROOK

3500 FT FR JCT ROUTE 168, Hartford, CT

Built 2001 Load: 43.4 t ADT: 2,525

SOUTH GRAND ST #1

Good

Over: STONY BROOK

1 1/4 MI SO OF RT 187&526, Hartford, CT

Built 2001 Load: 43.4 t ADT: 619

US ROUTE 44

Good

Over: BLACKBERRY RIVER

.7 MI WEST OF JCT ROUTE 7, Litchfield, CT

Built 1989 Load: 43.4 t ADT: 3,900

ROUTE 17A

Good

Over: CARR BROOK

2.3 MI N OF ROUTE 66, Middlesex, CT

Built 2014 Load: 43.4 t ADT: 4,900

ROUTE 79

Good

Over: HAMMONASSET BROOK

0.1 MI S OF ROUTE 148, Middlesex, CT

Built 2015 Load: 43.4 t ADT: 5,800

ROUTE 9 RAMP 006

Good

Over: MUD RIVER

500 FT S OF ROUTE 153, Middlesex, CT

Built 1966 Load: 43.4 t ADT: 4,405

SAW MILL ROAD

Good

Over: PARMELEE BROOK

0.3 MI NORTH OF ROUTE 17, Middlesex, CT

Built 2001 Load: 43.4 t ADT: 1,300

ROUTE 8

Good

Over: ROSE STREET

0.6 MI SOUTH OF ROUTE 67, New Haven, CT

Built 1961 Load: 43.4 t ADT: 53,800

INTERSTATE-91 SB

Good

Over: MUDDY RIVER

0.8 MI SOUTH OF RT 40, New Haven, CT

Built 1965 Load: 43.4 t ADT: 55,750

TAYLOR BRIDGE ROAD

Good

Over: BARTLETT BROOK

1000 FT WEST OF GEER RD, New London, CT

Built 2013 Load: 43.4 t ADT: 148

I-84 RAMP 266

Good

Over: SKUNGAMAUG RIVER

I-84 EB EXIT 68 OFF RAMP, Tolland, CT

Built 1978 Load: 43.4 t ADT: 7,600

DISCOVERY DRIVE

Good

Over: WETLANDS

SOUTH OF ROUTE 44, Tolland, CT

Built 2015 Load: 43.4 t ADT: 3,800

WINDHAM ROAD

Good

Over: LITTLE RIVER

1 MILE EAST OF ROUTE 97, Windham, CT

Built 1999 Load: 43.4 t ADT: 372

ROUTE 159

Good

Over: MEADOW BROOK

0.3 MI NO. OF HARTFORD TL, Hartford, CT

Built 1992 Load: 43.5 t ADT: 12,900

ROUTE 8

Good

Over: SANDY BROOK

100' S OF RIVERTON ROAD, Litchfield, CT

Built 1988 Load: 43.5 t ADT: 2,900

SASCO CREEK ROAD

Good

Over: METRO-NORTH RAILROAD

350 FT S OF I-95, Fairfield, CT

Built 1920 Load: 43.6 t ADT: 840

STILLWATER POND RD

Good

Over: W BRANCH NAUGATUCK RIVER

1000' EAST OF RTE 272, Litchfield, CT

Built 1960 Load: 43.6 t ADT: 642

HIGH BRIDGE ROAD

Good

Over: BANTAM RIVER

.2 MI S. OF ROUTE 202, Litchfield, CT

Built 2008 Load: 43.7 t ADT: 64

ROUTE 154

Good

Over: SOUTH COVE

3.9 MI N OF US ROUTE 1, Middlesex, CT

Built 1994 Load: 43.7 t ADT: 1,700

MARJORIE CIRCLE

Good

Over: JEREMY RIVER

500' SOUTH OF ROUTE 85, Tolland, CT

Built 2017 Load: 43.7 t ADT: 525

MARCY ROAD

Good

Over: NATCHAUG RIVER

300 FT E OF NATCHAUG ST, Windham, CT

Built 1997 Load: 43.7 t ADT: 85

INTERSTATE-91 SB

Good

Over: HAYDEN STATION ROAD

0.4 MILE SOUTH OF RTE 20, Hartford, CT

Built 1992 Load: 44.0 t ADT: 57,400

SCHOOL HOUSE ROAD

Good

Over: METRO NORTH RAILROAD

0.1 MI E OF I-95, New Haven, CT

Built 1893 Load: 44.0 t ADT: 11,803

WALNUT TREE HILLRD

Good

Over: POOTATUCK RIVER

300 FT NORTH OF SR 816, Fairfield, CT

Built 1938 Load: 44.1 t ADT: 184

SAWMILL ROAD #1

Good

Over: BALL POND BROOK

.5 MI N E OF ROUTE 37 JCT, Fairfield, CT

Built 2019 Load: 44.1 t ADT: 2,532

ROUTE 2 WESTBOUND

Good

Over: ENSIGN STREET

.5 MILES WEST OF EXIT 5A, Hartford, CT

Built 1962 Load: 44.1 t ADT: 33,850

ROUTE 154

Good

Over: SOUTH COVE

4.34 MILES NORTH ROUTE 1, Middlesex, CT

Built 1994 Load: 44.1 t ADT: 1,700

SPRUCE BROOK ROAD

Good

Over: TRANSYLVANIA BROOK

450FT WEST OF RTE 172 INT, New Haven, CT

Built 2018 Load: 44.1 t ADT: 300

SCARD ROAD

Good

Over: MUDDY RIVER

0.3 MI E OF WHIRLWIND HLL, New Haven, CT

Built 1945 Load: 44.3 t ADT: 714

GREYSTONE ROAD EXT

Good

Over: TODD-HOLLOW & HANCOCK

O/TODD HOLLOW& HANCOCK BK, Litchfield, CT

Built 1998 Load: 44.4 t ADT: 12

BULLS BRIDGE ROAD

Good

Over: POWER STATION CANAL

NEAR ROUTE 7, Litchfield, CT

Built 1991 Load: 44.4 t ADT: 500

ROUTE 17

Good

Over: LONG HILL BROOK

0.4 MI S OF ROUTE 155, Middlesex, CT

Built 2014 Load: 44.4 t ADT: 14,300

DOLBIA HILL ROAD 2

Good

Over: EIGHT MILE RIVER

715 FT E OF SSR 434, Middlesex, CT

Built 2005 Load: 44.4 t ADT: 87

ROUTE 16

Good

Over: BARTLETT BROOK

1.2 MI WEST OF RTE 207, New London, CT

Built 1948 Load: 44.4 t ADT: 2,700

SOUTH PARK AVENUE

Good

Over: MILL RIVER

1.0 MI N OF ROUTE 15, Fairfield, CT

Built 2021 Load: 44.7 t ADT: 4,260

BAYBERRY LANE #2

Good

Over: ASPETUCK RIVER

0.1 MI NORTH OF ROUTE 136, Fairfield, CT

Built 2022 Load: 44.7 t ADT: 676

ROUTE 272

Good

Over: NORFOLK BROOK

0.2 MI S OF US 44 OVLP, Litchfield, CT

Built 1972 Load: 44.7 t ADT: 1,700

INTERSTATE-95

Good

Over: CHESTNUT STREET

0.1 MI N OF US ROUTE 1, New Haven, CT

Built 1958 Load: 44.7 t ADT: 70,500

TOTOKET ROAD

Good

Over: FARM RIVER

0.4 MI NORTH OF ROUTE 80, New Haven, CT

Built 1991 Load: 44.7 t ADT: 700

BOOM BRIDGE ROAD

Good

Over: PAWCATUCK RIVER

.75 MI SW OF ANTHONY RD, New London, CT

Built 1968 Load: 44.7 t ADT: 102

ROUTE 74

Good

Over: FENTON RIVER

1.3 MILE EAST OF RTE 320, Tolland, CT

Built 1933 Load: 44.7 t ADT: 4,000

ROUTE 8 SOUTHBOUND

Good

Over: OLD STRATFORD ROAD

3.3 MI N OF ROUTE 15, Fairfield, CT

Built 1975 Load: 44.8 t ADT: 26,400

ROUTE 117

Good

Over: INDIAN TOWN BROOK

150 FT S OF ROUTE 2, New London, CT

Built 2001 Load: 44.9 t ADT: 7,800

ROUTE 35

Good

Over: RIDGEFIELD BROOK

0.8 MI N OF ROUTE 116, Fairfield, CT

Built 2018 Load: 45.0 t ADT: 16,800

BROAD STREET

Good

Over: AMTRAK RR & BUSWAY

200 FEET SOUTH OF I-84 EB, Hartford, CT

Built 1975 Load: 45.0 t ADT: 8,400

ORCHARD ROAD

Good

Over: AMTRAK RAILROAD

2500 FT W JCT OLD TPKE RD, Hartford, CT

Built 2000 Load: 45.0 t ADT: 1,200

ROUTE 154

Good

Over: CANDLEWOOD HILL BROOK

AT JCT RTE 81 & RTE 154, Middlesex, CT

Built 2016 Load: 45.0 t ADT: 5,400

Showing 3,601-3,650 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.