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 148

Good

Over: WHALEBONE CREEK

0.8 MI W OF ROUTE 82, New London, CT

Built 1928 Load: 47.1 t ADT: 300

BEACHSIDE AVENUE

Good

Over: METRO NORTH RAILROAD

125 FT S OF I-95, Fairfield, CT

Built 1982 Load: 47.2 t ADT: 2,526

CENTER ROAD

Good

Over: ASPETUCK RESERVOIR

0.1 MI E OF ROUTE 58, Fairfield, CT

Built 1958 Load: 47.2 t ADT: 2,866

INTERSTATE-95

Good

Over: STATE STREET

0.3 MI N OF ROUTE 77, New Haven, CT

Built 1958 Load: 47.2 t ADT: 57,400

JELLIFF MILL ROAD

Good

Over: NOROTON RIVER

0.1 MI WEST OF ROUTE 106, Fairfield, CT

Built 2018 Load: 47.3 t ADT: 1,940

BURNHAM STREET

Good

Over: MATTABESSET RIVER

575 FT W. OF R0UTE 372, Hartford, CT

Built 2019 Load: 47.3 t ADT: 5,151

ROUTE 15

Good

Over: WHEELERS FARM ROAD

1.5 MI N OF ROUTE 110, New Haven, CT

Built 1993 Load: 47.3 t ADT: 88,000

NEW WHITFIELD ST

Good

Over: AMTRAK RAILROAD

0.5 MI SOUTH OF RTE 146, New Haven, CT

Built 1940 Load: 47.5 t ADT: 2,500

ROUTE 137

Good

Over: RIPPOWAM RIVER

0.1 MI NORTH OF ROUTE 15, Fairfield, CT

Built 2023 Load: 47.6 t ADT: 14,900

CAVALRY ROAD

Good

Over: W BRANCH SAUGATUCK RV

0.7 MI WEST OF ROUTE 57, Fairfield, CT

Built 2022 Load: 47.6 t ADT: 715

NORTH SHORE ROAD

Good

Over: BUTTERNUT BROOK

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

Built 2016 Load: 47.6 t ADT: 1,108

ROUTE 148

Good

Over: BROOK

0.2 MI E OF ROUTE 79, Middlesex, CT

Built 2015 Load: 47.6 t ADT: 1,900

I-84 WESTBOUND

Good

Over: MAD RIVER

1600'+/- EAST OF ROUTE 69, New Haven, CT

Built 2018 Load: 47.6 t ADT: 48,700

INTERSTATE-91 NB

Good

Over: HAYDEN STATION ROAD

200 FEET NORTH OF EXIT 40, Hartford, CT

Built 1992 Load: 47.7 t ADT: 39,400

SCOTLAND ROAD

Good

Over: HOCKANUM RIVER

0.3 MI SOUTH OF ROUTE 44, Hartford, CT

Built 1985 Load: 47.9 t ADT: 13,640

VALLEY STREET #1

Good

Over: WEST RIVER

.4 MI WEST OF BLAKE ST, New Haven, CT

Built 1983 Load: 47.9 t ADT: 11,500

BLACKS ROAD

Good

Over: QUINNIPIAC RIVER

1.2 MI E OF ROUTE 10, New Haven, CT

Built 1987 Load: 47.9 t ADT: 1,453

JAMES STREET

Good

Over: SILVERMINE RIVER

0.2 MI SOUTH OF PERRY AVE, Fairfield, CT

Built 1956 Load: 48.0 t ADT: 10,300

BAILIWICK ROAD

Good

Over: BYRAM RIVER

RIVERSVILLE & BAILIWICK, Fairfield, CT

Built 1955 Load: 48.0 t ADT: 675

ROUTE 72

Good

Over: CAMP STREET

800 FT NORTH OF ROUTE 177, Hartford, CT

Built 1980 Load: 48.0 t ADT: 10,700

ROUTE 80

Good

Over: DEEP RIVER

1.1 MI W OF ROUTE 9, Middlesex, CT

Built 2021 Load: 48.0 t ADT: 6,100

CHERRY HILL ROAD

Good

Over: COGINCHAUG RIVER

0.1 S OF ROUTE 157, Middlesex, CT

Built 2000 Load: 48.0 t ADT: 2,786

WILMOT ROAD

Good

Over: WINTERGREEN BROOK

1 MI NORTH OF ROUTE 10, New Haven, CT

Built 2017 Load: 48.0 t ADT: 737

DART HILL ROAD

Good

Over: HOCKANUM RIVER

1000 FT WEST OF ROUTE 83, Tolland, CT

Built 2023 Load: 48.0 t ADT: 4,700

MILL STREET

Good

Over: GREAT BROOK

500' WEST OF GROVE STREET, Litchfield, CT

Built 2018 Load: 48.3 t ADT: 520

US ROUTE 7

Good

Over: EDDYS COVE

.1 MI SOUTH OF JCT US 44, Litchfield, CT

Built 1989 Load: 48.3 t ADT: 6,200

ROUTE 148

Good

Over: PATTACONK BROOK

0.5 MI W OF ROUTE 9, Middlesex, CT

Built 1939 Load: 48.3 t ADT: 5,000

INTERSTATE-95

Good

Over: CAMPBELL AVENUE

1.2 MI S OF ROUTE 10, New Haven, CT

Built 1956 Load: 48.3 t ADT: 105,300

RIVER STREET

Good

Over: HOCKANUM RIVER

AT JCT WEST MAIN STREET, Tolland, CT

Built 2010 Load: 48.3 t ADT: 1,286

MIDDLE BEACH ROAD

Good

Over: FENCE CREEK

0.4 MI E OF EAST WHARF RD, New Haven, CT

Built 2002 Load: 48.4 t ADT: 1,050

ROUTE 156

Good

Over: E BRANCH EIGHT MILE RV

0.6 MI E OF ROUTE 82, New London, CT

Built 1988 Load: 48.5 t ADT: 2,500

US ROUTE 44

Good

Over: MOUNT HOPE RIVER

.1 MI WEST OF ROUTE 89, Windham, CT

Built 1990 Load: 48.5 t ADT: 6,300

ROUTE 8

Good

Over: LONG HILL AVENUE

0.5 MI S OF ROUTE 110, Fairfield, CT

Built 1950 Load: 48.6 t ADT: 66,000

MERRITT STREET

Good

Over: HORSE TAVERN BROOK

AT THE JCT OF VALLEY ROAD, Fairfield, CT

Built 2013 Load: 48.6 t ADT: 386

MILL STREET

Good

Over: SUMNER BROOK

0.1 MI N OF SAYBROOK ROAD, Middlesex, CT

Built 1953 Load: 48.6 t ADT: 158

US ROUTE 1

Good

Over: WEST RIVER

1.0 MI N OF I-95, New Haven, CT

Built 1994 Load: 48.6 t ADT: 14,300

US ROUTE 1

Good

Over: STONY BROOK

2.2 MI E OF ROUTE 161, New London, CT

Built 2013 Load: 48.6 t ADT: 5,600

SR 616

Good

Over: GILLETT BROOK

1.9 MI E OF COLCHESTER TL, New London, CT

Built 1923 Load: 48.6 t ADT: 1,600

SELLECK HILL ROAD

Good

Over: WACHOCASTINOOK BROOK

JCT FACTORY STREET, Litchfield, CT

Built 2002 Load: 48.8 t ADT: 645

DOBSON ROAD

Good

Over: DOBSONVILLE POND

0.2 MILES SO. OF RTE. 30, Tolland, CT

Built 1986 Load: 48.8 t ADT: 5,200

HARBOR ROAD

Good

Over: MILL RIVER

400 FT SOUTH OF US RTE 1, Fairfield, CT

Built 1927 Load: 48.9 t ADT: 1,600

STEPNEY ROAD

Good

Over: ASPETUCK RIVER

Poverty Hollow/ Stepney, Fairfield, CT

Built 2016 Load: 48.9 t ADT: 625

ROUTE 66

Good

Over: JEREMY'S RIVER

0.4 MI W OF ROUTE 85, Tolland, CT

Built 1967 Load: 48.9 t ADT: 6,300

MILL BRIDGE RD # 1

Good

Over: BUNGEE BROOK

1650' NORTH OF ROUTE 244, Windham, CT

Built 2017 Load: 48.9 t ADT: 265

ROUTE 104

Good

Over: RIPPOWAM RIVER

20 FT S OF CLOVER HILL DR, Fairfield, CT

Built 1991 Load: 49.0 t ADT: 14,800

ROUTE 219

Good

Over: WEST BRANCH SALMON BROOK

100 FT. SOUTH OF ROUTE 20, Hartford, CT

Built 1959 Load: 49.0 t ADT: 7,200

SR 478(N SHORE RD)

Good

Over: SUCKER BROOK

100' WEST OF JCT RTE 45, Litchfield, CT

Built 1957 Load: 49.0 t ADT: 550

CRANE HOLLOW RD #3

Good

Over: WEEKEEPEEMEE RIVER

.5 MI N OF WOODBURY TL, Litchfield, CT

Built 1988 Load: 49.0 t ADT: 595

MALL LOADING DOCKS

Good

Over: UNNAMED STREAM

MASHANTUCKET PEQUOT RESER, New London, CT

Built 2006 Load: 49.0 t ADT: 1,000

INTERSTATE 95

Good

Over: LAFAYETTE STREET NO. 2

0.1 MI N OF ROUTE 8, Fairfield, CT

Built 1959 Load: 49.2 t ADT: 102,700

Showing 3,701-3,750 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.