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

SR 660

Good

Over: LITTLE RIVER

.3 MI NORTH OF ROUTE 97, New London, CT

Built 1990 Load: 99.9 t ADT: 2,600

ROUTE 83

Good

Over: THRESHER BROOK

0.2 MILE NORTH OF SR 528, Tolland, CT

Built 1957 Load: 99.9 t ADT: 4,100

US 6 & RAMP,SR 633

Good

Over: SAWMILL BROOK

0.1 MI WEST OF ROUTE 195, Tolland, CT

Built 1973 Load: 99.9 t ADT: 17,000

INTERSTATE-395

Good

Over: MILL BROOK

4 MILE NORTH OF ROUTE 201, Windham, CT

Built 1958 Load: 99.9 t ADT: 30,000

SR 695

Good

Over: SNAKE MEADOW BROOK

1.6MI E OF INTERSTATE-395, Windham, CT

Built 1958 Load: 99.9 t ADT: 4,500

INTERSTATE-395

Good

Over: LATHROP BROOK

.1 MI S OF LATHROP RD, Windham, CT

Built 1958 Load: 99.9 t ADT: 30,000

VALLEY ROAD

Good

Over: WHETSTONE BROOK

NEAR JCT CAT HOLLOW ROAD, Windham, CT

Built 2001 Load: 99.9 t ADT: 1,402

ROUTE 169

Good

Over: TATNIC BROOK

3 MI NORTH OF ROUTE 14, Windham, CT

Built 1990 Load: 99.9 t ADT: 2,200

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

EAST STREET

Poor

Over: PEQUABUCK RIVER

160 FT SOUTH OF ROUTE 72, Hartford, CT

Built 1900 Load: 12.6 t ADT: 2,805

CONGRESS STREET #2

Poor

Over: MILL RIVER

0.5 MI W OF ROUTE 59, Fairfield, CT

Built 1935 Load: 13.0 t ADT: 6,505

ROUTE 34

Poor

Over: HOUSATONIC RIVER

1 MILE EAST OF JCT RT 111, Fairfield, CT

Built 1919 Load: 13.3 t ADT: 9,400

ATWOODVILLE ROAD

Poor

Over: MOUNT HOPE RIVER

.3 MI EAST OF ROUTE 89, Tolland, CT

Built 1950 Load: 13.6 t ADT: 425

WOODCHUCK HILL RD

Poor

Over: LITTLE RIVER

50 FT E JCT HANOVER ROAD, Windham, CT

Built 1900 Load: 14.9 t ADT: 1,178

MICHAEL'S WAY

Poor

Over: W BRANCH SAUGATUCK RIVER

0.1 MILE WEST OF ROUTE 53, Fairfield, CT

Built 1995 Load: 15.6 t ADT: 215

ALPHA AVENUE

Poor

Over: AMTRAK RR & LOCAL ROADS

1000 FT SOUTH OF ROUTE 1A, New London, CT

Built 1940 Load: 16.2 t ADT: 4,200

ROUTE 177

Poor

Over: FARMINGTON RIVER

0.2 MI S FROM ROUTE 4 JCT, Hartford, CT

Built 1939 Load: 17.8 t ADT: 16,500

SAND ROAD

Poor

Over: WEST ASPETUCK RIVER

NEAR JCT W/LONG MT RD., Litchfield, CT

Built 1983 Load: 18.8 t ADT: 506

ROUTE 207

Poor

Over: BEAVER BROOK

3 MILES EAST OF ROUTE 32, New London, CT

Built 1938 Load: 20.1 t ADT: 2,800

SR 536 -CROOKED ST

Poor

Over: PAN AM RAILROAD

0.2 MILE EAST OF I-84, Hartford, CT

Built 1969 Load: 21.1 t ADT: 11,300

SALEM ROAD

Poor

Over: EAST BR EIGHT MILE RIVER

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

Built 1991 Load: 21.7 t ADT: 413

DOWNS STREET

Poor

Over: PEQUABUCK RIVER

100 FT SOUTH OF ROUTE 72, Hartford, CT

Built 1938 Load: 22.9 t ADT: 1,120

ROUTE 154

Poor

Over: BACK RIVER

0.8 MI S OF US ROUTE 1, Middlesex, CT

Built 1935 Load: 23.0 t ADT: 3,000

WATERSIDE LANE

Poor

Over: HAMMOCK RIVER

0.3 MI S OF US ROUTE 1, Middlesex, CT

Built 1994 Load: 23.4 t ADT: 510

INTERSTATE-95

Poor

Over: METRO NORTH RAILROAD

0.23 MI NORTH OF FIRST AV, New Haven, CT

Built 1956 Load: 23.7 t ADT: 121,500

SILVER HILL ROAD

Poor

Over: ASPETUCK RIVER

50 FEET EAST OF ROUTE 58, Fairfield, CT

Built 1920 Load: 23.9 t ADT: 295

OLD KINGS HIGHWAY

Poor

Over: STONY BROOK

700 FEET EAST OF ROUTE 1, Fairfield, CT

Built 1935 Load: 24.6 t ADT: 3,820

BOSTON HOLLOW RD 2

Poor

Over: BIGELOW BROOK

AT EASTFORD TOWN LINE, Windham, CT

Built 1910 Load: 24.7 t ADT: 55

WEST MORRIS ROAD

Poor

Over: BANTAM RIVER

0.5 MI SO. OF MORRIS T.L., Litchfield, CT

Built 1956 Load: 24.9 t ADT: 199

MILLER-GOODWIN CON

Poor

Over: LITTLE RIVER

0.5 MI SOUTH OF ROUTE 14, Windham, CT

Built 1930 Load: 24.9 t ADT: 175

WILSONVILLE ROAD

Poor

Over: FRENCH RIVER

200 FEET EAST OF ROUTE 12, Windham, CT

Built 1936 Load: 25.1 t ADT: 1,168

TOELLES ROAD

Poor

Over: QUINNIPIAC RIVER

100FT E OF ROUTE 15, New Haven, CT

Built 1982 Load: 25.3 t ADT: 8,703

NAUGATUCK AVENUE

Poor

Over: METRO NORTH RAILROAD

100' NORTH OF I-95, New Haven, CT

Built 1929 Load: 25.4 t ADT: 3,790

MERRYALL ROAD

Poor

Over: WEST ASPETUCK RIVER

JCT OF W MEETINGHOUSE RD, Litchfield, CT

Built 1937 Load: 25.9 t ADT: 655

INTERSTATE 95 NORT

Poor

Over: THAMES RV,RR,LOCAL ROADS

1.04 MI S OF N JCT US1 EB, New London, CT

Built 1943 Load: 26.0 t ADT: 42,600

ROUTE 322

Poor

Over: TEN MILE RIVER

210 FT E OF ROUTE 10, Hartford, CT

Built 1989 Load: 26.2 t ADT: 9,500

OLD ROAD #2

Poor

Over: SASCO BROOK

AT FAIRFIELD TOWN LINE, Fairfield, CT

Built 1965 Load: 26.8 t ADT: 1,990

CHURCH STREET

Poor

Over: W BR NAUGATUCK RIVER

300' WEST OF WATER STREET, Litchfield, CT

Built 1956 Load: 26.9 t ADT: 6,490

FERN STREET

Poor

Over: WEST BRANCH TROUT BROOK

0.2 MI WEST OF N. MAIN ST, Hartford, CT

Built 1916 Load: 27.1 t ADT: 8,112

ISLAND BROOK AVE

Poor

Over: PEQUONNOCK RIVER

0.4 MI E OF US ROUTE 1, Fairfield, CT

Built 1938 Load: 27.2 t ADT: 8,240

ROUTE 130

Poor

Over: PEQUONNOCK RIVER

0.2 MILE WEST OF I-95, Fairfield, CT

Built 1975 Load: 27.5 t ADT: 14,600

WELLERS BRIDGE RD

Poor

Over: SHEPAUG RIVER

APPROX 200'EAST OF RTE 67, Litchfield, CT

Built 1955 Load: 27.5 t ADT: 3,000

KENYONVILLE ROAD

Poor

Over: STILL RIVER

0.1 MILE SOUTH OF RTE 171, Windham, CT

Built 1947 Load: 28.6 t ADT: 246

KENNEDY AVENUE

Poor

Over: STILL RIVER

I-84 EXIT 5 TO RTE 53 S, Fairfield, CT

Built 1964 Load: 29.2 t ADT: 6,375

BUCKLEY HILL ROAD

Poor

Over: FRENCH RIVER

0.1 MI SOUTH OF ROUTE 12, Windham, CT

Built 1937 Load: 29.4 t ADT: 1,900

ASHFORD ROAD

Poor

Over: BIGELOW BROOK

1/4 MI SO OF WESTFORD RD, Windham, CT

Built 1937 Load: 29.5 t ADT: 200

SOUTH ROAD

Poor

Over: STILL RIVER

150 FT EAST OF WINSTED RD, Litchfield, CT

Built 1984 Load: 29.8 t ADT: 104

Showing 4,101-4,150 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.