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

INTERSTATE-691 WB

Unknown

Over: US ROUTE 5

I 691 WB OVER ROUTE 5, New Haven, CT

Built 1971 ADT: 20,800

US ROUTE 5

Unknown

Over: I-91, AMTRAK, RAMP B

0.36N OF RTE 22 BISHOP ST, New Haven, CT

Built 1973 ADT: 88,600

INTERSTATE-91 NB

Unknown

Over: MILL RV-STATE ST RMP 140

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

Built 1965 ADT: 4,100

I-91 NB RAMP 141

Unknown

Over: I-91 NB RAMP 140

I91 NB OFF RAMP TO WILLOW, New Haven, CT

Built 1965 ADT: 4,100

INTERSTATE-91 SB

Unknown

Over: STATE ST MILL RIV RAMPS

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

Built 1965 ADT: 4,000

WILLOW STREET

Unknown

Over: I91 RMPS 139&141,MILL RV

EXIT # 6 OFF I-91 NB, New Haven, CT

Built 1965 ADT: 4,200

I-91 RAMP 142

Unknown

Over: INTERSTATE-91 RAMP 143

EXIT 6 I-91 SB(WILLOW ST), New Haven, CT

Built 1965 ADT: 3,400

INTERSTATE-91 NB

Unknown

Over: US 5 & AMTRAK & FERRY ST

1.1 MI S OF ROUTE 17, New Haven, CT

Built 1964 ADT: 13,900

INTERSTATE-91 SB

Unknown

Over: US 5 & AMTRAK & FERRY ST

1.0 MI S OF ROUTE 17, New Haven, CT

Built 1964 ADT: 13,900

INTERSTATE-91 SB

Unknown

Over: I-91 TR 801 & SR 724 EB

AT JCT OF RTE I 91 & I 95, New Haven, CT

Built 1965 ADT: 15,200

INTERSTATE-91 SB

Unknown

Over: US ROUTE 1

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

Built 2014 ADT: 9,800

INTERSTATE 91 NB

Unknown

Over: US1(WATER ST) & I-95 RMP

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

Built 1965 ADT: 2,000

I-91 TR 802

Unknown

Over: US ROUTE 1(WATER STREET)

EXIT 1 RAMP FROM 91 SB, New Haven, CT

Built 2015 ADT: 9,800

INTERSTATE-91 SB

Unknown

Over: INTERSTATE-95 RAMP 317

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

Built 2013 ADT: 4,200

INTERSTATE-91

Unknown

Over: I-91 RAMP 002

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

Built 1965 ADT: 3,500

NORTH WALL STREET

Unknown

Over: INTERSTATE-691

0.4 MILE WEST OF ROUTE 15, New Haven, CT

Built 1965 ADT: 82,400

PRESTON AVENUE

Unknown

Over: ROUTE 66

0.6MI W JCT I-691 &RTE 66, New Haven, CT

Built 1965 ADT: 24,600

I-91 RAMP 132

Unknown

Over: I-91 RAMP 135 & AMTRAK

RMP TRUMBULL ST TO I91 SB, New Haven, CT

Built 1965 ADT: 5,300

INTERSTATE-91

Unknown

Over: I-91 RAMPS & AMTRAK

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

Built 1965 ADT: 17,800

INTERSTATE-91

Unknown

Over: ROUTE 17

EXIT 8 ROUTE 91, New Haven, CT

Built 1965 ADT: 30,000

INTERSTATE-91 NB

Unknown

Over: SR 715 (MONTOWESE AVE.)

EXIT 9 ON I-91, New Haven, CT

Built 1965 ADT: 20,800

INTERSTATE-91 SB

Unknown

Over: SR 715 (MONTOWESE AVE)

I-91 SB OVER SR 715, New Haven, CT

Built 1965 ADT: 20,800

INTERSTATE-91 NB

Unknown

Over: SR 729

0.8 MI N OF ROUTE 40, New Haven, CT

Built 1965 ADT: 8,200

INTERSTATE-91 SB

Unknown

Over: SR 729

0.8 MI N OF ROUTE 40, New Haven, CT

Built 1965 ADT: 8,200

INTERSTATE-91 NB

Unknown

Over: US ROUTE 5

I-91 EXIT NO. 12, New Haven, CT

Built 1965 ADT: 18,800

INTERSTATE-91 SB

Unknown

Over: US ROUTE 5

I-91 EXIT NO. 12, New Haven, CT

Built 1965 ADT: 18,800

BASSETT ROAD

Unknown

Over: INTERSTATE-91

700' NORTH OF WILSON AVE., New Haven, CT

Built 2017 ADT: 72,800

INTERSTATE-91 SB

Unknown

Over: I-91 TR 807

ROUTE 91 EXIT NO. 13, New Haven, CT

Built 1965 ADT: 3,000

SR 702

Unknown

Over: INTERSTATE-91 SOUTHBOUND

0.5 MI S OF EXIT 91 SB, New Haven, CT

Built 1965 ADT: 32,300

INTERSTATE-91 NB

Unknown

Over: INTERSTATE-91 TR 807

1 MI SOUTH OF ROUTE 150, New Haven, CT

Built 1965 ADT: 3,000

HARRISON ROAD

Unknown

Over: INTERSTATE-91

.50 MI SOUTH OF ROUTE 150, New Haven, CT

Built 1965 ADT: 75,600

INTERSTATE-91 NB

Unknown

Over: ROUTE 150

I-91 EXIT NO. 14, New Haven, CT

Built 1965 ADT: 7,300

INTERSTATE-91 SB

Unknown

Over: ROUTE 150

I-91 EXIT NO. 14, New Haven, CT

Built 1965 ADT: 7,300

SR 738 (E. CENTER

Unknown

Over: INTERSTATE-91

.76 MI SO OF RTE 68, New Haven, CT

Built 1965 ADT: 69,400

NEW ROCK HILL ROAD

Unknown

Over: INTERSTATE-91

1.77 SOUTH OF ROUTE 68, New Haven, CT

Built 1965 ADT: 74,600

DURHAM ROAD

Unknown

Over: INTERSTATE-91

betwn exits 14 & 15, I-91, New Haven, CT

Built 1965 ADT: 37,200

ROUTE 68

Unknown

Over: INTERSTATE-91

1.0 MI NORTH OF DURHAM RD, New Haven, CT

Built 2004 ADT: 67,700

CARPENTER LANE

Unknown

Over: INTERSTATE-91

.54 MI NORTH OF RTE 68, New Haven, CT

Built 1965 ADT: 72,500

MURDOCK AVENUE

Unknown

Over: INTERSTATE-91

.74 MI SO OF RT 15 NB EXT, New Haven, CT

Built 1965 ADT: 72,500

ROUTE 8

Unknown

Over: SR 847 - SOUTH MAIN ST.

0.1 MILE NORTH OF EXIT 29, New Haven, CT

Built 1965 ADT: 6,200

SEVENTH STREET

Unknown

Over: ROUTE 8

1.5 MI N NAUGTK/WATBRY TL, New Haven, CT

Built 1965 ADT: 52,700

ROUTE 8 NORTHBOUND

Unknown

Over: ROUTE 8 SB & LOCAL ROADS

ROUTE 8 SOUTH OF I-84, New Haven, CT

Built 1966 ADT: 28,600

I-84 TR 811

Unknown

Over: I-84 TR 812 & NAUGATUCK

NB RTE 8 TO EB 84 EXIT 31, New Haven, CT

Built 1966 ADT: 11,700

I-84 TR 808

Unknown

Over: ROUTE 8 SB & RAMP 129

EXIT 33 ROUTE 8 NB, New Haven, CT

Built 1966 ADT: 3,000

INTERSTATE-84 EB

Unknown

Over: I-84WB,RTE8,NAUGATUCK RV

I-84 EXIT 20, New Haven, CT

Built 1967 ADT: 2,600

INTERSTATE 84 WB

Unknown

Over: RTE 8, NAUG RIV, M-N RR

WATERBURY LOWER LEVEL, New Haven, CT

Built 1967 ADT: 3,000

I-84 RAMP 169

Unknown

Over: I-84 TR 805 & 808

EB RAMP FROM HIGHLAND AVE, New Haven, CT

Built 1966 ADT: 4,200

I-84 TR 809

Unknown

Over: ROUTE 8 NB,RIVERSIDE ST

SB RTE 8 EXIT 31TO EB I84, New Haven, CT

Built 1966 ADT: 2,600

I-84 TR 810

Unknown

Over: ROUTE 8 NB & RAMP 128

ROUTE 84 WB EXIT 20, New Haven, CT

Built 1967 ADT: 2,600

I-84 RAMP 197

Unknown

Over: RAMP 202 MEADOW STREET

EXIT 21 I-84 EB RAMP, New Haven, CT

Built 1967 ADT: 3,800

Showing 751-800 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.