State profile · Below median Poor share

Connecticut bridge safety

According to the Federal Highway Administration's 2024 National Bridge Inventory, condition ratings, load ratings, and Poor-condition shares for every public highway bridge in Connecticut.

4,365
Public bridges
27.8%
Good condition
4.7%
Poor condition

Connecticut holds 4,365 public highway bridges (#38 of 52 by inventory) with a 4.72% Poor share (#36 of 52 by Poor share).

That is 4.7% of the state's inventory, against an average of 7.5% across the 54 states and territories with Poor-rated bridges on file, which places it 17 of 54 ordered from the lowest Poor share upward. A bridge is rated Poor when its weakest applicable component scores 4 or below on the inspecting agency's 0-9 scale, so the category is a maintenance and funding signal rather than a closure order or a live crossing-safety verdict.

Inventory: FHWA NBI 2024 · last ETL August 2026

Total Bridges

4,365

Public highway bridges in Connecticut

Good Condition

27.8%

1,213 bridges rated 7-9

-22.2pp vs 50% benchmark

Poor Condition

4.7%

206 bridges whose lowest applicable component is rated 0-4

-2.8pp vs national avg 7.5%

Connecticut vs national bridge condition

Connecticut - Good condition share 27.8%
National avg

Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).

Connecticut - Poor-condition share 15.7%
National avg

Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.5%.

Connecticut in the national condition pattern

Each point is a state or territory in the FHWA NBI; the highlighted point is this profile.

Inventory size and Poor-condition share are different measures: Connecticut has 4,365 bridges and a 4.7% Poor-condition share in the 2024 NBI, rank #17 of 54 jurisdictions ordered from the lowest share upward. The dashed comparisons mark the national average state rate and the midpoint of the plotted inventory range; neither is a live safety or closure threshold. Scatter plot of 54 data points. 0%10%20%30%40% 0k20k40k60k Public bridges in inventory (thousands) Poor-condition share (%) CT, Public bridges in inventory (thousands): 4.4k · Poor-condition share (%): 4.72%AL, Public bridges in inventory (thousands): 16.2k · Poor-condition share (%): 3.35%AK, Public bridges in inventory (thousands): 1.7k · Poor-condition share (%): 7.89%AZ, Public bridges in inventory (thousands): 8.6k · Poor-condition share (%): 1.15%AR, Public bridges in inventory (thousands): 13k · Poor-condition share (%): 5.43%CA, Public bridges in inventory (thousands): 25.8k · Poor-condition share (%): 5.91%CO, Public bridges in inventory (thousands): 9k · Poor-condition share (%): 4.82%DE, Public bridges in inventory (thousands): 0.9k · Poor-condition share (%): 1.26%DC, Public bridges in inventory (thousands): 0.3k · Poor-condition share (%): 1.95%FL, Public bridges in inventory (thousands): 13k · Poor-condition share (%): 2.79%GA, Public bridges in inventory (thousands): 15.1k · Poor-condition share (%): 1.59%GU, Public bridges in inventory (thousands): 0k · Poor-condition share (%): 12.77%HI, Public bridges in inventory (thousands): 1.2k · Poor-condition share (%): 6.53%ID, Public bridges in inventory (thousands): 4.6k · Poor-condition share (%): 4.9%IL, Public bridges in inventory (thousands): 26.9k · Poor-condition share (%): 9.35%IN, Public bridges in inventory (thousands): 19.5k · Poor-condition share (%): 5.22%IA, Public bridges in inventory (thousands): 23.7k · Poor-condition share (%): 19.16%KS, Public bridges in inventory (thousands): 24.9k · Poor-condition share (%): 5.26%KY, Public bridges in inventory (thousands): 14.5k · Poor-condition share (%): 7.37%LA, Public bridges in inventory (thousands): 12.7k · Poor-condition share (%): 11.48%ME, Public bridges in inventory (thousands): 2.5k · Poor-condition share (%): 15.41%MD, Public bridges in inventory (thousands): 5.5k · Poor-condition share (%): 4.56%MA, Public bridges in inventory (thousands): 5.3k · Poor-condition share (%): 8.88%MI, Public bridges in inventory (thousands): 11.4k · Poor-condition share (%): 11.27%MN, Public bridges in inventory (thousands): 13.5k · Poor-condition share (%): 4.44%MS, Public bridges in inventory (thousands): 16.7k · Poor-condition share (%): 6.03%MO, Public bridges in inventory (thousands): 24.6k · Poor-condition share (%): 8.95%MT, Public bridges in inventory (thousands): 5.2k · Poor-condition share (%): 6.81%NE, Public bridges in inventory (thousands): 15.4k · Poor-condition share (%): 7.9%NV, Public bridges in inventory (thousands): 2.1k · Poor-condition share (%): 1.14%NH, Public bridges in inventory (thousands): 2.5k · Poor-condition share (%): 7.51%NJ, Public bridges in inventory (thousands): 6.8k · Poor-condition share (%): 6.01%NM, Public bridges in inventory (thousands): 4k · Poor-condition share (%): 4.51%NY, Public bridges in inventory (thousands): 17.6k · Poor-condition share (%): 9.43%NC, Public bridges in inventory (thousands): 19.2k · Poor-condition share (%): 6.76%ND, Public bridges in inventory (thousands): 4.3k · Poor-condition share (%): 10.98%OH, Public bridges in inventory (thousands): 26.7k · Poor-condition share (%): 4.74%OK, Public bridges in inventory (thousands): 22.9k · Poor-condition share (%): 7.7%OR, Public bridges in inventory (thousands): 8.3k · Poor-condition share (%): 4.61%PA, Public bridges in inventory (thousands): 23.3k · Poor-condition share (%): 12.58%PR, Public bridges in inventory (thousands): 2.4k · Poor-condition share (%): 13.92%RI, Public bridges in inventory (thousands): 0.8k · Poor-condition share (%): 15.2%SC, Public bridges in inventory (thousands): 9.5k · Poor-condition share (%): 6.17%SD, Public bridges in inventory (thousands): 5.9k · Poor-condition share (%): 16.36%TN, Public bridges in inventory (thousands): 20.4k · Poor-condition share (%): 4.41%TX, Public bridges in inventory (thousands): 56.7k · Poor-condition share (%): 1.23%UT, Public bridges in inventory (thousands): 3.1k · Poor-condition share (%): 2.91%VT, Public bridges in inventory (thousands): 2.9k · Poor-condition share (%): 2.9%VI, Public bridges in inventory (thousands): 0k · Poor-condition share (%): 29.17%VA, Public bridges in inventory (thousands): 14.1k · Poor-condition share (%): 3.39%WA, Public bridges in inventory (thousands): 8.5k · Poor-condition share (%): 5.45%WV, Public bridges in inventory (thousands): 7.3k · Poor-condition share (%): 18.64%WI, Public bridges in inventory (thousands): 14.4k · Poor-condition share (%): 6.52%WY, Public bridges in inventory (thousands): 3.1k · Poor-condition share (%): 6.51%
Inventory size and Poor-condition share are different measures: Connecticut has 4,365 bridges and a 4.7% Poor-condition share in the 2024 NBI, rank #17 of 54 jurisdictions ordered from the lowest share upward. The dashed comparisons mark the national average state rate and the midpoint of the plotted inventory range; neither is a live safety or closure threshold.

Connecticut vs all states by public bridge inventory

Where this state's FHWA NBI public-highway bridge count sits among every state and territory on PlainBridges

4,365 38th of 54 higher than 16 of 54 states

States and territories, banded by public bridge inventory size

Each bar is a band; taller bars hold more states. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.

Source FHWA National Bridge Inventory · 2024

Read the rank neighborhood for Connecticut

The highlighted point is Connecticut: 4,365 bridges and 4.72% in Poor condition, rank #17 of 54 jurisdictions ordered from the lowest share upward. The five jurisdictions immediately above and below Connecticut on that same Poor-share ordering:

  • Maryland: 5,484 bridges · 4.56% Poor
  • Oregon: 8,305 bridges · 4.61% Poor
  • Connecticut: 4,365 bridges · 4.72% Poor
  • Ohio: 26,729 bridges · 4.74% Poor
  • Colorado: 8,965 bridges · 4.82% Poor

The full national sortable table lives on the rankings page.

Material families in Connecticut

Exclusive FHWA material families across all 4,365 bridges in this state; continuous variants fold into the parent family. Orthogonal to the Poor-share scatter above.

Who maintains Connecticut’s inventory

State agency holds 65.3% of the 4,365 public highway bridges filed under Connecticut in the 2024 NBI, the agency-of-record split for this state, not a condition verdict.

When Connecticut’s bridges were built

Pre-1950 construction accounts for 18.9% of the 4,365 bridges with a recorded original year in Connecticut. Era bands are orthogonal to the Poor-share ranking above.

Condition Distribution

Connecticut27.8%67.5%GoodFairPoor
Bridge inventory deck-condition mix - Connecticut (FHWA NBI)

Counties (0)

Connecticut vs nearby ranks

Adjacent states by Poor-condition share (lower share = better)

States are ranked by the share of bridges whose lowest applicable component rating is 4 or below. This describes recorded condition; it does not measure funding effectiveness or live crossing safety. States here sit immediately above and below Connecticut on the same metric.

MD

Maryland

4.56% top marginal rate
Structure
Progressive
Burden @ $100K
$5,484

OR

Oregon

4.61% top marginal rate
Structure
Progressive
Burden @ $100K
$8,305
Selected

CT

Connecticut

4.72% top marginal rate
Structure
Progressive
Burden @ $100K
$4,365

OH

Ohio

4.74% top marginal rate
Structure
Progressive
Burden @ $100K
$26,729

CO

Colorado

4.82% top marginal rate
Structure
Progressive
Burden @ $100K
$8,965

Bridges Needing Most Attention in Connecticut

Six lowest-condition bridges in Connecticut, ranked by the portal's composite display score. Inspection intervals are risk-based under current NBIS rules.

FALLS ROAD

Poor

Over: NONNEWAUG BROOK

300 E OF NONNEWAUG RD, CT

Built 1956 Load: 0.0 t ADT: 95

SHERMAN STREET

Poor

Over: YANTIC RIVER

1 MILE WEST ROUTE 2, CT

Built 1920 Load: 3.9 t

ROUTE 191

Poor

Over: SCANTIC RIVER

1.9 MI SOUTH OF RTE. 140, CT

Built 1925 Load: 5.8 t ADT: 1,500

RIVER BANK ROAD

Poor

Over: EAST BRANCH MIANUS RIVER

0.8 MI N OF ROUTE 15, CT

Built 1957 Load: 8.1 t ADT: 1,500

TRACY ROAD #1

Poor

Over: KITT BROOK

0.5 MI SOUTH OF ROUTE 14, CT

Built 1928 Load: 8.7 t ADT: 176

ROUTE 136

Poor

Over: SAUGATUCK RIVER

BETWEEN I-95 EXIT 17 & 18, CT

Built 1870 Load: 10.0 t ADT: 14,500

All Bridges in Connecticut

NORTH BEAR HILL RD

Good

Over: NATCHAUG RIVER

0.4 MILE EAST OF RTE 198, CT

Built 2018 Load: 51.8 t ADT: 257

ROUTE 3 TR 801

Good

Over: ROUTE 2 RAMP 080

500 EAST OF INT RTE. 3, CT

Built 1987 Load: 51.8 t ADT: 17,985

ROUTE 2

Good

Over: SR 680 {MGM GRAND DR}

1.7 MI E OF ROUTE 164, CT

Built 2009 Load: 51.8 t ADT: 9,600

US RTE 6 TR 803

Good

Over: FRANKLIN STREET

.1 MI NORTH OF US ROUTE 6, CT

Built 1963 Load: 52.2 t ADT: 900

ROUTE 179

Good

Over: CHERRY BROOK

.8 MI S OF BARKHAMSTED TL, CT

Built 1956 Load: 52.2 t ADT: 2,100

INTERSTATE-91 NB

Good

Over: SR 729

0.8 MI N OF ROUTE 40, CT

Built 1965 Load: 52.2 t ADT: 95,200

W JOHNSON AVENUE

Good

Over: TEN MILE RIVER

0.5 MI W OF ROUTE 10, CT

Built 1987 Load: 52.2 t ADT: 3,911

US ROUTE 7

Good

Over: REPTILE CROSSING

2 MI. NORTH OF RTE. 202, CT

Built 2009 Load: 52.2 t ADT: 25,100

MORGAN LANE

Good

Over: INTERSTATE 95

1.2 MI S OF ROUTE 162, CT

Built 1957 Load: 52.5 t ADT: 8,200

DONAHUE ROAD

Good

Over: BELDEN BROOK

250 WEST OF LOSTACRES RD, CT

Built 1956 Load: 52.5 t ADT: 410

NORMAN ROAD

Good

Over: PACHAUG RIVER

0.2 MI SOUTH OF ROUTE 201, CT

Built 2019 Load: 52.5 t ADT: 691

ROUTE 305

Good

Over: INTERSTATE-91 NORTHBOUND

AT EXIT 37, CT

Built 1990 Load: 52.5 t ADT: 16,700

INTERSTATE 91 NB

Good

Over: SR 724 Eastbound

AT I-95/I-91/Rte 34 Inter, CT

Built 2015 Load: 52.6 t ADT: 28,800

NORTH ROAD

Good

Over: ROUTE 9 SOUTHBOUND

OVERPASS ROUTE 9 SB, CT

Built 1988 Load: 52.7 t ADT: 73

I-91 RAMP 142

Good

Over: INTERSTATE-91 RAMP 143

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

Built 1965 Load: 52.8 t ADT: 8,500

WEST WASHINGTON ST

Good

Over: COPPER MINE BROOK

0.7 MI EAST OF ROUTE 229, CT

Built 2007 Load: 52.8 t ADT: 7,765

SR 833(CLAYTON RD)

Good

Over: KONKAPUT RIVER

.37 MI SOUTH OF MASS SL, CT

Built 1988 Load: 52.8 t ADT: 2,000

INTERSTATE-95 NB

Good

Over: OIL MILL ROAD

0.7 MI E OF US ROUTE 1, CT

Built 1958 Load: 53.1 t ADT: 22,300

ROUTE 25

Good

Over: W. BRANCH PEQUONNOCK RVR

2 MILES NORTH OF RTE. 111, CT

Built 2019 Load: 53.1 t ADT: 18,800

MAIN STREET

Good

Over: TANKERHOOSEN RIVER

0.4 MILE FROM ROUTE 83, CT

Built 1885 Load: 53.1 t ADT: 21

ROUTE 176 -MAIN ST

Good

Over: MILL BROOK

0.6 MILE NORTH OF RTE 175, CT

Built 1990 Load: 53.1 t ADT: 12,600

RUSCOE ROAD

Good

Over: E BR SILVERMINE RIVER

WEST OF ROUTE 33, CT

Built 1991 Load: 53.2 t ADT: 822

PROSPECT STREET

Good

Over: P & W RAILROAD

EXIT FR LIBERTY ST NO 2, CT

Built 2010 Load: 53.3 t ADT: 4,295

ROUTE 66

Good

Over: COGINCHAUG RIVER

105 FT W OF ROUTE 157, CT

Built 1979 Load: 53.4 t ADT: 25,400

ROUTE 146

Good

Over: BRANFORD RIVER

1.5 MI E. OF US ROUTE 1, CT

Built 1996 Load: 53.5 t ADT: 5,900

MANSFIELD AVENUE

Good

Over: US ROUTE 6 WESTBOUND

.4 E MANSFIELD WINDHAM TL, CT

Built 1971 Load: 53.5 t ADT: 800

STATE STREET

Good

Over: MILL RIVER

1TENTH EAST OF MILL RV ST, CT

Built 2016 Load: 53.5 t ADT: 7,200

LAUREL STREET

Good

Over: AMTRAK CNERR &CTFastrak

250 NORTH OF CAPITOL AVE, CT

Built 1962 Load: 53.5 t ADT: 7,020

WEST STREET

Good

Over: P & W RAILROAD

0.1 MI SOUTH OF ROUTE 157, CT

Built 2019 Load: 53.5 t ADT: 4,572

SR 710

Good

Over: FULLING MILL BROOK

0.04 MI SO. OF EXIT 28 SB, CT

Built 1998 Load: 53.8 t ADT: 3,500

ROUTE 2 EASTBOUND

Good

Over: ROARING BROOK

2/10 OF MILE W OF RTE 83, CT

Built 1964 Load: 53.8 t ADT: 22,700

RIVER ROAD NO. 1

Good

Over: CHATFIELD HOLLOW BROOK

500FT W OF PAPER MILL RD, CT

Built 1960 Load: 53.8 t ADT: 357

ASPETUCK RIDGE RD

Good

Over: WEST ASPETUCK RIVER

.5 M NORTH OF BOARDMAN RD, CT

Built 1981 Load: 53.8 t ADT: 1,323

NORTHFIELD ROAD

Good

Over: NAUGATUCK RIVER

LITCHFIELD-HARWINTON T.L., CT

Built 2011 Load: 53.9 t ADT: 520

RIVER STREET NO 1

Good

Over: MOOSUP RIVER

300 E. of Rt. 14, CT

Built 2001 Load: 54.0 t ADT: 240

ROUTE 8 SOUTHBOUND

Good

Over: JOHN STREET

0.6 MI N OF I-95, CT

Built 1968 Load: 54.1 t ADT: 45,500

I-84 RAMP 247

Good

Over: HOCKANUM RIVER

EXIT 63 I-84 EASTBOUND, CT

Built 2017 Load: 54.1 t ADT: 11,400

BARRY ROAD

Good

Over: EIGHT MILE BROOK

0.5 MI W OF ROUTE 188, CT

Built 2002 Load: 54.3 t ADT: 240

US ROUTE 1

Good

Over: WEPAWAUG RIVER

425 FT S OF ROUTE 121, CT

Built 2016 Load: 54.4 t ADT: 21,200

ROUTE 57

Good

Over: SAUGATUCK RIVER

NORTH OF ROUTE 15 EXIT 42, CT

Built 1930 Load: 54.4 t ADT: 13,700

ROUTE 63

Good

Over: HOLLENBECK RIVER

0.3 MI N OF ROUTE 43, CT

Built 1960 Load: 54.4 t ADT: 2,800

RUBBER AVENUE

Good

Over: LONG MEADOW POND BROOK

JCT HOADLEY ST &RUBBER AV, CT

Built 1983 Load: 54.4 t ADT: 10,900

OLD WHEELER LANE

Good

Over: ROARING BROOK

350 SOUTH OF ROUTE 177, CT

Built 1964 Load: 54.4 t ADT: 627

ROUTE 189

Good

Over: MUDDY BROOK

1.1 MI NO. OF SIMSBURY TL, CT

Built 1993 Load: 54.4 t ADT: 9,700

ROUTE 2 EB RAMP

Good

Over: ROUTE 2

2.2 MI E OF ROUTE 164, CT

Built 2008 Load: 54.8 t ADT: 800

LOUIS ALLAN DRIVE

Good

Over: STREAM

0.2 MI W OF DEER PARK R, CT

Built 2004 Load: 54.8 t ADT: 83

I-91 TR 854 & 855

Good

Over: INTERSTATE-291 RAMP 001

0.1 MILE WEST OF I-91, CT

Built 1992 Load: 54.9 t ADT: 19,900

CROSS ROAD

Good

Over: INTERSTATE-95

1.7 MI S OF ROUTE 85, CT

Built 2005 Load: 55.1 t ADT: 5,700

GLENWOOD AVENUE

Good

Over: ALEWIFE COVE

0.2 MI E OF ROUTE 213, CT

Built 1980 Load: 55.1 t ADT: 1,717

ROUTE 4

Good

Over: W BRANCH NAUGATUCK RIVER

200 FT. EAST OF ROUTE 272, CT

Built 1989 Load: 55.1 t ADT: 11,000

Showing 3,801-3,850 of 4,365 bridges

Related

All states → | National rankings → | Understanding conditions → | Retired SD term explained →
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges.

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). Poor condition is an inspection-record category, not a closure or unsafe-to-cross designation. Consult the bridge owner for current status.

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.

What to do with this

Use Connecticut's inventory picture to drill to a county or a specific span.

  • Browse counties in Connecticut and open the highest-Poor shares first. County list
  • See where this state sits among peers on Poor-condition share. State rankings
  • Compare this state with another jurisdiction on the same measures. State compare

NBI condition ratings are inventory snapshots, not live crossing-safety verdicts.

Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. Connecticut Good/Fair/Poor shares and county rollups on this page are computed from the same NBI extract as the national boards; no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2024 NBI release. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.