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

US ROUTE 1

Good

Over: STONEY BROOK

0.7 MI SOUTH OF I-95 UP, Fairfield, CT

Built 1986 Load: 38.5 t ADT: 11,800

INTERSTATE-84 EB

Good

Over: BERKSHIRE ROAD

0.7 MI E OF FARMINGTON TL, Hartford, CT

Built 2022 Load: 38.6 t ADT: 66,800

MAGNOLIA HILL ROAD

Good

Over: EAST SPRING BROOK

0.5 MILES EAST OF RTE 132, Litchfield, CT

Built 1955 Load: 38.6 t ADT: 255

OLD GRASSY HILL RD

Good

Over: GOOD HILL BROOK

0.1 MI S OF SR 317, Litchfield, CT

Built 1970 Load: 38.6 t ADT: 150

ROUTE 22

Good

Over: MILL RIVER

.2 MI E OF ROUTE 10, New Haven, CT

Built 2002 Load: 38.6 t ADT: 4,200

I-84 WB EXIT 25A

Good

Over: BEAVER POND BROOK

I-84 WB EXIT 25A, New Haven, CT

Built 2006 Load: 38.6 t ADT: 4,500

US ROUTE 1

Good

Over: STONY BROOK

0.2 MI S OF ROUTE 1A, New London, CT

Built 2013 Load: 38.6 t ADT: 6,500

TRINITY PASS ROAD

Good

Over: RIPPOWAM RIVER

300'W OF PONUS RIDGE ROAD, Fairfield, CT

Built 1990 Load: 38.7 t ADT: 1,165

WALNUT HILL ROAD

Good

Over: LIMEKILN BROOK

4000 FT N OF RTS 58&302, Fairfield, CT

Built 2014 Load: 38.8 t ADT: 7,845

SSR 490

Good

Over: POOTATUCK RIVER

1500' E OF NUNNAWAUK ROAD, Fairfield, CT

Built 1998 Load: 38.8 t ADT: 11,100

SR 555 (WEST MAIN

Good

Over: PAN AM RAILROAD

0.4 MILE EAST OF RTE 372, Hartford, CT

Built 1930 Load: 38.9 t ADT: 9,300

PROSPECT STREET

Good

Over: EIGHT MILE RIVER

495 FT E. OF I-84, Hartford, CT

Built 1961 Load: 38.9 t ADT: 2,337

ASPETUCK RIDGE RD

Good

Over: MERRYALL BROOK

200' W OF MEETINGHOUSE RD, Litchfield, CT

Built 2014 Load: 38.9 t ADT: 633

WALLER ROAD

Good

Over: BULL MOUNTAIN BROOK

0.1M EAST OF S. KENT RD, Litchfield, CT

Built 1998 Load: 38.9 t ADT: 73

INTERSTATE-84 WB

Good

Over: PIERPONT ROAD

.8 MI WEST OF CHESHIRE TL, New Haven, CT

Built 2006 Load: 38.9 t ADT: 50,850

HILLFIELD ROAD

Good

Over: EATON BROOK

1.4 mi West of RT 10, New Haven, CT

Built 2015 Load: 38.9 t ADT: 311

CAMP MOWEEN ROAD

Good

Over: YANTIC RIVER

900' SOUTH OF ROUTE 616, New London, CT

Built 2002 Load: 38.9 t ADT: 414

RIVER ROAD

Good

Over: FIVE MILE RIVER

1620FT FR JCT PUTNAM ROAD, Windham, CT

Built 2012 Load: 38.9 t ADT: 1,020

PLUMTREES ROAD

Good

Over: EAST SWAMP BROOK

JCT OF WALNUT HILL ROAD, Fairfield, CT

Built 2016 Load: 39.2 t ADT: 6,600

SHERWOOD AVENUE

Good

Over: BYRAM RIVER

OVER BYRAM RIVER, Fairfield, CT

Built 2010 Load: 39.2 t ADT: 3,935

SHINGLE MILL ROAD

Good

Over: ROCK BROOK

1.5 MILE SOUTH OF ROUTE 4, Litchfield, CT

Built 2019 Load: 39.2 t ADT: 63

ROUTE 184

Good

Over: SHUNOCK RIVER

0.6 MI E OF ROUTE 2, New London, CT

Built 2014 Load: 39.2 t ADT: 4,200

CHURCH STREET

Good

Over: MOOSUP RIVER

525' S FROM JCT ROUTE 14, Windham, CT

Built 1950 Load: 39.2 t ADT: 750

VALLEY ROAD

Good

Over: SILVERMINE RIVER

JCT OF DEEP VALLEY ROAD, Fairfield, CT

Built 1951 Load: 39.5 t ADT: 905

ADDISON ROAD

Good

Over: SALMON BROOK

1000 (N) INT RTE 94, Hartford, CT

Built 2013 Load: 39.5 t ADT: 3,500

INTERSTATE-91 SB

Good

Over: CAPEN STREET

.6 MI NORTH OF ROUTE 178, Hartford, CT

Built 1991 Load: 39.5 t ADT: 74,450

ROUTE 272

Good

Over: HART BROOK

3.6 MILES NORTH OF RTE. 4, Litchfield, CT

Built 1958 Load: 39.5 t ADT: 1,100

INTERSTATE-95

Good

Over: MOOSE HILL ROAD

1.9 MI S OF ROUTE 77, New Haven, CT

Built 1958 Load: 39.5 t ADT: 59,500

ROUTE 114

Good

Over: RACE BROOK

0.2 MI N OF ROUTE 34, New Haven, CT

Built 2016 Load: 39.5 t ADT: 6,500

EAST LIBERTY ST

Good

Over: MAD RIVER

1.0 MILE EAST OF SR 847, New Haven, CT

Built 1907 Load: 39.5 t ADT: 3,500

EDMUND ROAD

Good

Over: PACHAUG RIVER

1000' SOUTH OF ROUTE 201, New London, CT

Built 2013 Load: 39.5 t ADT: 529

POPPLE SWAMP ROAD

Good

Over: FURNACE BROOK

660 FT N. OF ROUTE 4, Litchfield, CT

Built 1994 Load: 39.8 t ADT: 218

ROUTE 8 RAMP 031

Good

Over: METRO-NORTH & RR DRIVE

ROUTE 8, EXIT 15, New Haven, CT

Built 1996 Load: 39.8 t ADT: 7,900

ROUTE 71

Good

Over: HARBOR BROOK

0.2 MI S OF COOPER ST., New Haven, CT

Built 2012 Load: 39.8 t ADT: 7,200

THE BOULEVARD

Good

Over: HOUSATONIC RAILROAD

1 MI NORTH OF RTE 6 INTER, Fairfield, CT

Built 1989 Load: 39.9 t ADT: 1,263

US ROUTE 44

Good

Over: CHERRY BROOK

0.1 MILE WEST OF RTE. 179, Hartford, CT

Built 2006 Load: 39.9 t ADT: 10,300

OLD FARMS ROAD

Good

Over: FARMINGTON RIVER

500 FEET WEST OF ROUTE 10, Hartford, CT

Built 2020 Load: 39.9 t ADT: 5,300

GILLETTE ROAD

Good

Over: TORRINGFORD BROOK

.5 MILE WEST OF ROUTE 202, Litchfield, CT

Built 1956 Load: 39.9 t ADT: 408

ROUTE 17

Good

Over: LONG HILL BROOK

0.7 MI N OF ROUTE 155, Middlesex, CT

Built 2001 Load: 39.9 t ADT: 13,100

ROUTE 151

Good

Over: MOODUS RIVER

105 FT N OF ROUTE 149, Middlesex, CT

Built 2010 Load: 39.9 t ADT: 2,000

ROUTE 121

Good

Over: WEPAWAUG RIVER

0.2 MI S OF ROUTE 15, New Haven, CT

Built 1984 Load: 39.9 t ADT: 5,800

SPRUCE BROOK ROAD

Good

Over: TRANSYLVANIA BRK OVRFLOW

300' west of Route 172, New Haven, CT

Built 2018 Load: 39.9 t ADT: 364

SR 642

Good

Over: NEW ENGLAND CENTRAL RR

.67M W JCT INTERSTATE-395, New London, CT

Built 1937 Load: 39.9 t ADT: 9,300

ROUTE 169

Good

Over: KITT BROOK

1 MI SOUTH OF ROUTE 14, Windham, CT

Built 1990 Load: 39.9 t ADT: 3,500

ROUTE 69

Good

Over: HAMILTON PARK ROAD

0.4 MILE NORTH OF I-84, New Haven, CT

Built 1949 Load: 40.1 t ADT: 19,400

ROUTE 4

Good

Over: IVY MOUNTAIN BROOK

1 MILE EAST OF ROUTE 63, Litchfield, CT

Built 1998 Load: 40.2 t ADT: 7,100

FLAT ROCK PLACE

Good

Over: WETLANDS

0.5 M EAST RTE 154, Middlesex, CT

Built 1996 Load: 40.2 t ADT: 3,515

US ROUTE 1

Good

Over: QUANADUCK COVE

0.4 MI N OF US ROUTE 1A, New London, CT

Built 2013 Load: 40.2 t ADT: 5,700

LANE STREET

Good

Over: MEANS BROOK

0.1 MI E OF HUNTINGTON RD, Fairfield, CT

Built 2020 Load: 40.5 t ADT: 120

NONNEWAUG ROAD

Good

Over: EAST SPRING BROOK

1.23 MI EAST OF ROUTE 61, Litchfield, CT

Built 2021 Load: 40.5 t ADT: 253

Showing 3,501-3,550 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.