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 40 NB

Poor

Over: CSX RR, QUINNIPIAC RIVER

0.6 MI N OF 1-91 SB, New Haven, CT

Built 1972 Load: 29.9 t ADT: 20,500

WRIGHT ROAD

Poor

Over: QUANDUCK BROOK

1 MI E OF SAWMILL HILL RD, Windham, CT

Built 1965 Load: 29.9 t ADT: 36

TUNNEL ROAD

Poor

Over: SHEPAUG RIVER

100 FT S OF CHURCH HILL R, Litchfield, CT

Built 1956 Load: 30.0 t ADT: 255

CONNELLY PARKWAY

Poor

Over: MILL RIVER

0.2 MI E OF ROUTE 10, New Haven, CT

Built 1940 Load: 30.0 t ADT: 2,900

WOOLSON STREET

Poor

Over: STEELE BROOK

0.2 MILE EAST OF ROUTE 63, Litchfield, CT

Built 1929 Load: 30.8 t ADT: 1,000

GRANTVILLE ROAD

Poor

Over: MAD RIVER

500' S OF DANBURY QUARTER, Litchfield, CT

Built 1956 Load: 30.8 t ADT: 133

BUCKLEY HILL ROAD

Poor

Over: FRENCH RIVER CANAL

0.1 MI SO OF ROUTE 12, Windham, CT

Built 1976 Load: 30.8 t ADT: 645

LONG HILL ROAD

Poor

Over: HOP RIVER

550 FT FR JCT RTE 6, Tolland, CT

Built 1934 Load: 31.1 t ADT: 401

ROUTE 8 SOUTHBOUND

Poor

Over: RIVERSIDE ST-SUNNYSIDE

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

Built 1966 Load: 31.7 t ADT: 16,900

INTERSTATE-395

Poor

Over: BISHOP CROSSING RD

0.5 MI NORTH OF ROUTE 201, New London, CT

Built 1958 Load: 31.8 t ADT: 31,500

CHASE ROAD

Poor

Over: CADY BROOK

320FT EAST OF CADY ROAD, Windham, CT

Built 1940 Load: 32.4 t ADT: 238

WEST CEDAR STREET

Poor

Over: FIVE MILE RIVER

800 FT WEST RICHARDS AVE, Fairfield, CT

Built 1910 Load: 32.7 t ADT: 5,020

MOREHOUSE HWY #1

Poor

Over: MILL RIVER

AT JCT OF CANTERBURY LANE, Fairfield, CT

Built 1970 Load: 32.7 t ADT: 1,930

JUDGES HOLLOW RD

Poor

Over: ASPETUCK RIVER

AT THE WESTON TOWN LINE, Fairfield, CT

Built 1957 Load: 32.7 t ADT: 310

GREENS FARMS ROAD

Poor

Over: SASCO BROOK

FAIRFIELD TOWN LINE., Fairfield, CT

Built 1973 Load: 32.7 t ADT: 3,500

LOVERS LANE

Poor

Over: COMSTOCK BROOK

300 FT NORTH OF ROUTE 33, Fairfield, CT

Built 1930 Load: 32.7 t ADT: 420

RINGS END ROAD

Poor

Over: GORHAMS POND

0.5 MI EAST OF US ROUTE 1, Fairfield, CT

Built 1929 Load: 32.7 t ADT: 2,600

GEO.WASHINGTON HWY

Poor

Over: MIRY BROOK

0.25 MILE W OF DANBURY TL, Fairfield, CT

Built 1986 Load: 32.7 t ADT: 3,160

ROUTE 15

Poor

Over: MC MULLEN AVENUE

0.1 MILE SOUTH OF RTE. 99, Hartford, CT

Built 1943 Load: 32.7 t ADT: 31,000

NEWELL STREET

Poor

Over: QUINNIPIAC RIVER

0.2 MI N OF WEST QUEEN ST, Hartford, CT

Built 1964 Load: 32.7 t ADT: 2,116

RUSSELL AVENUE

Poor

Over: PHILO BROOK

875'WEST OF WENDOVER ROAD, Hartford, CT

Built 1969 Load: 32.7 t ADT: 1,033

ROUTE 263

Poor

Over: E BRANCH NAUGATUCK RIVER

1.5 MI E OF RT 272, Litchfield, CT

Built 1935 Load: 32.7 t ADT: 700

ROUTE 154

Poor

Over: ROARING BROOK

100 FT N OF ROUTE 82, Middlesex, CT

Built 1931 Load: 32.7 t ADT: 3,800

QUINNIPIAC STREET

Poor

Over: WALLACE RACEWAY

0.2 MI E OF ROUTE 15, New Haven, CT

Built 1915 Load: 32.7 t ADT: 12,500

CENTER STREET

Poor

Over: HARBOR BROOK

250 FT NO OF PRATT STREET, New Haven, CT

Built 1871 Load: 32.7 t ADT: 6,186

ROUTE 163

Poor

Over: OXOBOXO BROOK

3.3 MI S OF ROUTE 82, New London, CT

Built 1925 Load: 32.7 t ADT: 1,100

FORGE HILL ROAD

Poor

Over: PACHAUG RIVER

0.6 MI NORTH OF ROUTE 165, New London, CT

Built 1920 Load: 32.7 t ADT: 463

ROUTE 74

Poor

Over: SKUNGAMAUG RIVER

1.8 MILES WEST OF I-84, Tolland, CT

Built 1916 Load: 32.7 t ADT: 1,400

HYDEVILLE ROAD

Poor

Over: FURNACE BROOK

300 FT FR JCT ROUTE 19, Tolland, CT

Built 1935 Load: 32.7 t ADT: 644

BOGUE ROAD #1

Poor

Over: NAUGATUCK RIVER

TORRINGTON-HARWINTON T.L., Litchfield, CT

Built 1956 Load: 33.0 t ADT: 933

SHERMAN STREET

Poor

Over: YANTIC RIVER

1 MILE WEST OF ROUTE 2, New London, CT

Built 1955 Load: 33.6 t ADT: 5,227

ROUTE 15 & U.S. 5

Poor

Over: P&W RR & HARTFORD AVE

0.2 MI SO. OF HARTFORD TL, Hartford, CT

Built 1942 Load: 33.7 t ADT: 42,200

ROUTE 146

Poor

Over: WEST RIVER

0.4 MI W OF ROUTE 77, New Haven, CT

Built 1910 Load: 33.7 t ADT: 5,500

ROUTE 31

Poor

Over: NEW ENGLAND CENTRAL RR

0.1 MI S OF COVENTRY T.L., Tolland, CT

Built 1947 Load: 34.1 t ADT: 4,600

RIVER ROAD #2

Poor

Over: STRICKLAND BROOK

AT STRICKLAND ROAD, Fairfield, CT

Built 1977 Load: 34.2 t ADT: 6,300

ROUTE 15 NB

Poor

Over: QUINNIPIAC RIVER

1 MI NO OF JCT ROUTE 150, New Haven, CT

Built 1946 Load: 34.5 t ADT: 33,700

ROUTE 32

Poor

Over: NEW ENGLAND CENTRAL RR.

1.5 MI NORTH OF ROUTE 207, New London, CT

Built 1941 Load: 34.8 t ADT: 11,800

WHEATON ROAD

Poor

Over: EAST ASPETUCK RIVER

NEAR ROUTE 202, Litchfield, CT

Built 1985 Load: 35.5 t ADT: 890

ROUTE 8 SOUTHBOUND

Poor

Over: NAUGATUCK RV-LOCAL ROADS

.27 MI NORTH OF TOWN LINE, New Haven, CT

Built 1966 Load: 36.6 t ADT: 27,600

GROTON LONG PT RD

Poor

Over: PALMER COVE

0.3 MI W OF ROUTE 215, New London, CT

Built 1935 Load: 36.9 t ADT: 1,985

RIVER ROAD

Poor

Over: FALLS RIVER

0.3 MI S OF BOOK HILL RD, Middlesex, CT

Built 1954 Load: 37.3 t ADT: 2,677

COMMERCE DRIVE

Poor

Over: ASH CREEK

0.2 MILES WEST OF I-95, Fairfield, CT

Built 1950 Load: 37.9 t ADT: 11,970

INTERSTATE-84 WB

Poor

Over: HAMILTON STREET

0.4 MILE EAST OF EXIT 45, Hartford, CT

Built 1967 Load: 37.9 t ADT: 68,900

PEAKE BROOK ROAD

Poor

Over: LITTLE RIVER

.1 MI NORTH OF PUTNAM TL, Windham, CT

Built 1987 Load: 37.9 t ADT: 401

US ROUTE 1

Poor

Over: METRO NORTH RAILROAD

0.5 MI S OF I-95, Fairfield, CT

Built 1933 Load: 38.5 t ADT: 17,400

COBBLE ROAD

Poor

Over: HOLLENBECK RIVER

EAST OF RTE 63 INT, Litchfield, CT

Built 1956 Load: 39.9 t ADT: 378

HUMPHREY STREET

Poor

Over: MILL RIVER

0.1 MI E OF I-91, New Haven, CT

Built 1908 Load: 40.2 t ADT: 4,100

WALL STREET

Poor

Over: E BRANCH NAUGATUCK RIVER

NEXT TO O&G INDUSTRIES, Litchfield, CT

Built 1961 Load: 40.8 t ADT: 2,520

BOSWORTH ROAD

Poor

Over: MASHAMOQUET BROOK

800' NORTH OF ROUTE 101, Windham, CT

Built 1950 Load: 40.9 t ADT: 18

SR 745 KIMBERLY AV

Poor

Over: WEST RIVER

0.2 MI W OF I-95, New Haven, CT

Built 1969 Load: 41.1 t ADT: 16,000

Showing 4,151-4,200 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.