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

PECK ORCHARD ROAD

Good

Over: BROOK

0.8 MILE NORTH OF RTE 189, Hartford, CT

Built 2018 Load: 36.6 t ADT: 452

PECK LANE

Good

Over: TEN MILE RIVER

0.5 MI S OF I-691, New Haven, CT

Built 1996 Load: 36.6 t ADT: 2,769

ROUTE 234

Good

Over: ANGUILLA BROOK

2.6 MI E OF I-95, New London, CT

Built 2018 Load: 36.6 t ADT: 5,200

SR 661

Good

Over: WILLIMANTIC RIVER, NECRR

BETWEEN MAIN& PLEASANT ST, Windham, CT

Built 2000 Load: 36.7 t ADT: 15,400

HARBOR ROAD

Good

Over: MILL RIVER

500 FT SOUTH OF US RTE 1, Fairfield, CT

Built 1927 Load: 36.8 t ADT: 1,600

MARIOMI ROAD

Good

Over: SILVERMINE RIVER

300' EAST OF VALLEY ROAD, Fairfield, CT

Built 2013 Load: 36.9 t ADT: 800

MUSKET RIDGE ROAD

Good

Over: BALL POND BROOK

500' W OF WOOD CREEK ROAD, Fairfield, CT

Built 2010 Load: 36.9 t ADT: 80

MERIDIAN RIDGE DR

Good

Over: STREAM

0.4 M W JUNC OLD HAWLEY R, Fairfield, CT

Built 2008 Load: 36.9 t ADT: 107

ROUTE 4

Good

Over: ROARING BROOK

AT JCT ROUTE 167, Hartford, CT

Built 2015 Load: 36.9 t ADT: 18,900

LOWER LANE

Good

Over: MATTABESSET RIVER

0.2 MI S OF ROUTE 372, Hartford, CT

Built 1970 Load: 36.9 t ADT: 3,502

MERIDIAN ST EXT

Good

Over: AMTRAK RAILROAD

0.4 MI WEST OF US ROUTE 1, New London, CT

Built 1992 Load: 36.9 t ADT: 4,342

TIMES FARM ROAD

Good

Over: HOP RIVER

.29 MI EAST OF US ROUTE 6, Tolland, CT

Built 1935 Load: 36.9 t ADT: 169

CHASE ROAD

Good

Over: FIVE MILE RIVER

.5 MI WEST OF E PUTNAM RD, Windham, CT

Built 2015 Load: 36.9 t ADT: 333

ROUTE 243

Good

Over: WEPAWAUG RIVER

0.3 MI W OF ROUTE 114, New Haven, CT

Built 1993 Load: 37.1 t ADT: 5,000

INTERSTATE-91 SB

Good

Over: POOL ROAD

0.4 MI N OF US ROUTE 5, New Haven, CT

Built 1965 Load: 37.2 t ADT: 41,300

US ROUTE 5

Good

Over: ABANDONED RAILROAD

0.5 MI N OF I-691, New Haven, CT

Built 1989 Load: 37.2 t ADT: 13,300

CHURCH ST SOUTH #2

Good

Over: N HAVEN INTERLOCK AMTRAK

AT INT OF UNION AVE, New Haven, CT

Built 2003 Load: 37.2 t ADT: 5,600

ROUTE 138

Good

Over: PACHAUG RIVER

2.4 MI EAST OF ROUTE 164, New London, CT

Built 1953 Load: 37.2 t ADT: 7,400

ROUTE 12

Good

Over: MOOSUP RIVER

.2 MILE SOUTH OF ROUTE 14, Windham, CT

Built 1993 Load: 37.2 t ADT: 6,300

SOUTH PARK AVENUE

Good

Over: MILL RIVER

150 FT W OF BUCK HILL RD, Fairfield, CT

Built 2020 Load: 37.3 t ADT: 2,130

ROUTE 40 NB

Good

Over: HARTFORD TURNPIKE

AT EXIT 1 RTE 40, New Haven, CT

Built 1976 Load: 37.3 t ADT: 20,400

CORBIN ROAD

Good

Over: FARM RIVER

210 FT E. OF ROUTE 100, New Haven, CT

Built 1980 Load: 37.3 t ADT: 600

BRADLEY ROAD

Good

Over: WEST RIVER

100 FT E OF ROUTE 69, New Haven, CT

Built 1999 Load: 37.3 t ADT: 3,890

INTERSTATE-95

Good

Over: HOUSATONIC RIVER

0.3 MI W OF I95 EX 34, Fairfield, CT

Built 2017 Load: 37.6 t ADT: 88,400

BOULEVARD

Good

Over: TROUT BROOK

225'W INT TROUT BROOK DR, Hartford, CT

Built 1983 Load: 37.6 t ADT: 4,610

BEACH STREET

Good

Over: CSX RAILROAD

550 FT E OF ROUTE 103, New Haven, CT

Built 1978 Load: 37.6 t ADT: 3,435

ROUTE 63

Good

Over: WOOSTER BROOK

0.1 MILE SOUTH OF I-84, New Haven, CT

Built 2018 Load: 37.6 t ADT: 15,200

MILE CREEK ROAD

Good

Over: BLACKHALL RIVER

1 MI E. OF ROUTE 156, New London, CT

Built 1955 Load: 37.6 t ADT: 2,162

I-95 SB RAMPS M&P

Good

Over: EAST STREET & P&W RR

AT WEST END OF Q-BRIDGE, New Haven, CT

Built 2016 Load: 37.8 t ADT: 22,310

LONG MEADOW ROAD

Good

Over: LONG MEADOW POND

OVER LONG MEADOW POND, New Haven, CT

Built 2011 Load: 37.8 t ADT: 1,648

ROUTE 68

Good

Over: TEN MILE RIVER

1.0 MI W OF ROUTE 70, New Haven, CT

Built 1987 Load: 37.8 t ADT: 6,700

COVELL ROAD

Good

Over: MASHAMOQUET BROOK

0.4 MI SOUTH OF ROUTE 97, Windham, CT

Built 1900 Load: 37.8 t ADT: 132

LONG MOUNTAIN RD#1

Good

Over: WEST ASPETUCK RIVER

250' WEST OF MERRYALL RD, Litchfield, CT

Built 2002 Load: 37.9 t ADT: 1,125

FLAT ROCK PLACE

Good

Over: WETLANDS

0.6 MI E OF ROUTE 153, Middlesex, CT

Built 1996 Load: 37.9 t ADT: 3,511

ROUTE 71

Good

Over: SODOM BROOK

0.8 MILE SOUTH OF I-691, New Haven, CT

Built 2019 Load: 37.9 t ADT: 141,900

CEDAR HILL ROAD

Good

Over: MORRISSEY BROOK

0.3 M WEST OF ROUTE 7, Litchfield, CT

Built 2003 Load: 38.0 t ADT: 596

ROUTE 70

Good

Over: BROAD BROOK

320 FT W OF MERIDEN T.L., New Haven, CT

Built 2013 Load: 38.0 t ADT: 1,600

SR 724 WESTBOUND

Good

Over: BREWERY STREET

0.3 MI E. OF US ROUTE 1, New Haven, CT

Built 2011 Load: 38.1 t ADT: 37,750

MAPLE STREET

Good

Over: FARM RIVER

0.1 MI S OF ROUTE 100, New Haven, CT

Built 2011 Load: 38.1 t ADT: 1,444

HALES ROAD

Good

Over: METRO-NORTH RAILROAD

0.5 MI W HILLS POINT RD, Fairfield, CT

Built 1910 Load: 38.2 t ADT: 1,080

ROUTE 175

Good

Over: AMTRAK RAILROAD

.49MI E NW BRTN-NWNGTN TL, Hartford, CT

Built 1980 Load: 38.2 t ADT: 29,700

SANDY BROOK ROAD

Good

Over: SANDY BROOK

3.9 MILES E OF ROUTE 183, Litchfield, CT

Built 2013 Load: 38.2 t ADT: 662

WHEELER ROAD

Good

Over: SPRUCE BROOK

.1 MILE NORTH ROUTE 118, Litchfield, CT

Built 1956 Load: 38.2 t ADT: 186

ROUTE 45

Good

Over: SUCKER BROOK

1 MILE SOUTH OF ROUTE 341, Litchfield, CT

Built 1988 Load: 38.2 t ADT: 1,500

MAIN STREET

Good

Over: PATTACONK BROOK

55 FT S OF ROUTE 148, Middlesex, CT

Built 2016 Load: 38.2 t ADT: 1,500

I-691 TR 804

Good

Over: KNOTTER DRIVE

I-691 WB EXIT NO. 2, New Haven, CT

Built 1986 Load: 38.2 t ADT: 9,700

POTASH HILL ROAD

Good

Over: LITTLE RIVER

0.5 MI EAST OF MAIN ST, New London, CT

Built 1938 Load: 38.2 t ADT: 658

ROUTE 74

Good

Over: WILLIMANTIC RIVER

AT TOLLAND TOWN LINE, Tolland, CT

Built 2017 Load: 38.2 t ADT: 8,400

BOLTON ROAD

Good

Over: TANKERHOOSEN RIVER

25 FT S OF BAMFORTH ROAD, Tolland, CT

Built 2007 Load: 38.2 t ADT: 1,500

WESTSIDE ROAD

Good

Over: BLACKBERRY RIVER

500 FT WEST OF ROUTE 44, Litchfield, CT

Built 1940 Load: 38.3 t ADT: 252

Showing 3,451-3,500 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.