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

I-84 RAMP 200

Unknown

Over: I-84 RAMPS 199&202, BANK

EXIT 22 EB RT 84, New Haven, CT

Built 1966 ADT: 3,800

INTERSTATE 84 WB

Unknown

Over: BANK STREET & RAMP 199

.2 MILES WEST OF SR 847, New Haven, CT

Built 1965 ADT: 1,900

I-84 RAMP 201

Unknown

Over: I-84 RAMP 198 & BANK ST

EXIT 21, 84 WB OFF RAMP, New Haven, CT

Built 1965 ADT: 4,600

INTERSTATE 84

Unknown

Over: SR 847 (SOUTH MAIN ST.)

0.1 MILE EAST OF EXIT 21, New Haven, CT

Built 1965 ADT: 10,800

SOUTH ELM STREET

Unknown

Over: I-84 & MCMAHON STREET

1.1 MI W OF ROUTE 69, New Haven, CT

Built 1965 ADT: 114,900

I-84 TR 806

Unknown

Over: I84 TR 808,809,RIVERSIDE

RAMP FROM 84 EB TO 8 NB, New Haven, CT

Built 1965 ADT: 10,900

PEDESTRIAN WALK

Unknown

Over: ROUTE 8 SOUTHBOUND

WATERBURY INTERCHANGE, New Haven, CT

Built 1965 ADT: 1,800

RT 64 EB/I-84 RAMP

Unknown

Over: INTERSTATE 84

.4 MI EAST OF RTE 63, New Haven, CT

Built 1965 ADT: 62,600

HIGHLAND AVENUE

Unknown

Over: INTERSTATE 84

0.2 MI W OF ROUTE 8, New Haven, CT

Built 1966 ADT: 89,700

I-84 EB TR 806

Unknown

Over: INTERSTATE 84 WB

I-84 E/B EXIT 20, New Haven, CT

Built 1965 ADT: 4,200

FACTORY WALK

Unknown

Over: ROUTE 73

150' EAST OF WATERTOWN TL, New Haven, CT

Built 1900 ADT: 6,700

ROUTE 40 NB

Unknown

Over: I-91 & TR 806,RTE 40-007

0.4 MI N OF I-91 NB, New Haven, CT

Built 1972 ADT: 9,760

ROUTE 40 NB RAMP 0

Unknown

Over: I-91 NB TR 806

0.6 MI W OF ROUTE 103, New Haven, CT

Built 1972 ADT: 5,500

I-91 TR 806

Unknown

Over: INTERSTATE-91

.30M N OF NB JCT NB RTE40, New Haven, CT

Built 1972 ADT: 85,200

ROUTE 40 NB

Unknown

Over: US ROUTE 5

AT EXIT 1 NORTHBOUND, New Haven, CT

Built 1972 ADT: 12,300

ROUTE 40 SB

Unknown

Over: US ROUTE 5

AT ON RAMP FOR EXIT 1, New Haven, CT

Built 1972 ADT: 12,300

PEDESTRIAN WALK

Unknown

Over: ROUTE 10

0.7 MI N OF ROUTE 63, New Haven, CT

Built 1968 ADT: 13,769

ROUTE 40 SB

Unknown

Over: ROUTE 15 (WILBUR CROSS)

1.8 MILES NORTH OF I-91, New Haven, CT

Built 1976 ADT: 70,400

ROUTE 40 NB

Unknown

Over: ROUTE 15 (WILBUR CROSS)

1.8 MI NORTH OF I-91, New Haven, CT

Built 1976 ADT: 66,700

ROUTE 22

Unknown

Over: ROUTE 40

0.9 MI S OF ROUTE 10, New Haven, CT

Built 1976 ADT: 23,000

ROUTE 40 SB

Unknown

Over: ROUTE 22 & MILL RIVER

0.3 MILE S. OF ROUTE 10, New Haven, CT

Built 1976 ADT: 4,200

ROUTE 40 NB

Unknown

Over: ROUTE 22 & MILL RIVER

0.3 MILE S. OF ROUTE 10, New Haven, CT

Built 1976 ADT: 4,200

ROUTE 40 SB

Unknown

Over: ROUTE 10

3MI NORTHOF INTERSTATE 91, New Haven, CT

Built 1976 ADT: 12,900

RIVER ROAD #1

Unknown

Over: INTERSTATE 84

I-84 EXIT 13, New Haven, CT

Built 1978 ADT: 73,400

BALDWIN STREET #1

Unknown

Over: I-84, RAMPS & LOCAL RDS

BETWEEN I84 EXIT 23 & 24, New Haven, CT

Built 1978 ADT: 15,100

ROUTE 69

Unknown

Over: INTERSTATE 84

AT EXIT23 INTERSTATE 84 W, New Haven, CT

Built 2018 ADT: 5,500

SR721-NO MAIN ST

Unknown

Over: ROUTE 8

.8M N OF RT 67 (EX 22,RT8, New Haven, CT

Built 1981 ADT: 52,700

ROUTE 8

Unknown

Over: RTE 42 & NAUGATUCK RIVER

RTE 8 NEAR EXIT 23, New Haven, CT

Built 1981 ADT: 8,200

LOPUS ROAD

Unknown

Over: ROUTE 8

BET. RTE 8 EXIT 23 & 24, New Haven, CT

Built 1981 ADT: 47,400

ROUTE 8 SOUTHBOUND

Unknown

Over: MNRR, NAUGTCK RV

RTE 8 EXIT 24, New Haven, CT

Built 1981 ADT: 3,000

ROUTE 8 NORTHBOUND

Unknown

Over: METRO NORTH & NAUGTCK RV

RTE 8 EXIT 24, New Haven, CT

Built 1981 ADT: 3,000

ROUTE 10

Unknown

Over: INTERSTATE 691

I-691 EXIT 3, New Haven, CT

Built 1984 ADT: 50,300

PADDOCK AVENUE

Unknown

Over: ROUTE 15

1/3 MI SOUTH OF I-91, New Haven, CT

Built 1946 ADT: 75,800

AMTRAK RAILROAD

Unknown

Over: ROUTE 146

1.4 MI E OF US ROUTE 1, New Haven, CT

Built 1900 ADT: 4,600

AMTRAK RAILROAD

Unknown

Over: ROUTE 146

.24 MI W OF NEW QUARRY RD, New Haven, CT

Built 1917 ADT: 1,500

DICKERMAN ROAD

Unknown

Over: INTERSTATE-691

0.5 MI WEST OF ROUTE 10, New Haven, CT

Built 1986 ADT: 55,500

ABANDONED RAILROAD

Unknown

Over: INTERSTATE-691

1 MI E OF EXIT 2 RTE 691, New Haven, CT

Built 1987 ADT: 55,500

PECK LANE

Unknown

Over: INTERSTATE-691

0.7 MI WEST OF EXIT 3, New Haven, CT

Built 1986 ADT: 55,500

US ROUTE 5 NB

Unknown

Over: ROUTE 15

1.2 MILES NORTH OF I-691, New Haven, CT

Built 1946 ADT: 24,600

WOODWARD AVENUE

Unknown

Over: INTERSTATE-95

1.6 MI N OF I-91, New Haven, CT

Built 2006 ADT: 89,600

ROUTE 100

Unknown

Over: US ROUTE 1 & AMTRAK RR

0.1 MILE SOUTH OF I-95, New Haven, CT

Built 1992 ADT: 25,100

I-84 RAMP 059

Unknown

Over: I-84 WESTBOUND ON-RAMP

EXIT 22 I-84 WEST BOUND, New Haven, CT

Built 1997 ADT: 14,800

I-84 EB EXIT 23 ON

Unknown

Over: I-84 EB EXIT 25 OFF RAMP

AT INTER WITH ROUTE 69, New Haven, CT

Built 2018 ADT: 5,500

INTERSTATE 91 NB

Unknown

Over: SR 724 Eastbound

AT I-95/I-91/Rte 34 Inter, New Haven, CT

Built 2015 ADT: 26,700

I-95 SB RAMP 347A

Unknown

Over: INTERSTATE-95

0.1 MI S OF ROUTE 337, New Haven, CT

Built 2006 ADT: 89,600

PEDESTRIAN CROSSNG

Unknown

Over: ROUTE 10

320 FT S OF ROUTE 34, New Haven, CT

Built 2006 ADT: 24,700

OLD KINGS HWY N #1

Unknown

Over: INTERSTATE-95

0.5 MI WEST NORWALK TL, New London, CT

Built 1952 ADT: 122,500

WHIPPOORWILL ROAD

Unknown

Over: INTERSTATE-95

2.0 MI N. OF ROUTE 156, New London, CT

Built 1958 ADT: 61,900

FLAT ROCK HILL RD

Unknown

Over: INTERSTATE-95

3.1 MI N OF US ROUTE 1, New London, CT

Built 1958 ADT: 61,900

FOUR MILE RIVER RD

Unknown

Over: INTERSTATE-95

5.5 MI N OF ROUTE 9, New London, CT

Built 1958 ADT: 61,000

Showing 801-850 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.