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

RAMPART ROAD

Good

Over: INTERSTATE 95

0.1 MI E OF US ROUTE 1, CT

Built 1958 Load: 16.2 t ADT: 3,662

OLD MINE ROAD

Good

Over: PEQUONNOCK RIVER

100 FT EAST OF ROUTE 111, CT

Built 1979 Load: 17.5 t ADT: 650

HARPERS FERRY ROAD

Good

Over: INTERSTATE-84

I-84 EXIT NO. 25, CT

Built 2018 Load: 17.8 t ADT: 12,900

WHITTLESEY ROAD

Good

Over: SHEPAUG RIVER

1.5 MI S OF US ROUTE 202, CT

Built 1991 Load: 17.8 t ADT: 120

ROUTE 17

Good

Over: ROARING BROOK

50 FT SOUTH OF ROUTE 160, CT

Built 1996 Load: 18.8 t ADT: 10,700

ROUTE 203

Good

Over: SHETUCKET RIVER

0.2 MILE EAST OF ROUTE 32, CT

Built 1997 Load: 19.1 t ADT: 3,700

I-291 WESTBOUND

Good

Over: TOLLAND TPKE & CSRR

.4 MI EAST OF BATSON ROAD, CT

Built 1993 Load: 19.1 t ADT: 18,300

DAY ROAD

Good

Over: WOPPOQUIA BROOK

0.1 MILE EAST OF RTE 169, CT

Built 2008 Load: 19.1 t ADT: 106

MOUNT HOPE ROAD

Good

Over: MOUNT HOPE RIVER

50 FT FROM JCT ROUTE 89, CT

Built 1998 Load: 19.4 t ADT: 800

POLSTER ROAD

Good

Over: ROARING BROOK

3/4 MI NO OF MIHALIAK RD, CT

Built 1950 Load: 19.8 t ADT: 252

INTERSTATE-84

Good

Over: HOCKANUM RIVER

175 E OF MANCH/EHRTFD TL, CT

Built 1986 Load: 19.8 t ADT: 122,000

SR 729 (BROADWAY)

Good

Over: AMTRAK RAILROAD

0.2 MI E OF US ROUTE 5, CT

Built 1988 Load: 20.4 t ADT: 8,100

TODDS HILL ROAD

Good

Over: INTERSTATE-95 & RAMP 171

0.3 MI N OF US ROUTE 1, CT

Built 2002 Load: 20.7 t ADT: 774

VILLAGE STREET

Good

Over: DEEP RIVER

500 FT W OF ROUTE 154, CT

Built 2012 Load: 20.7 t ADT: 966

US ROUTE 1 NB

Good

Over: INTERSTATE-95

1.6 MI N OF I-91, CT

Built 2006 Load: 21.1 t ADT: 11,100

ROUTE 2

Good

Over: SUTTON AVENUE

AT EXIT 5B, CT

Built 1951 Load: 21.4 t ADT: 68,600

LAMBERT ROAD

Good

Over: RACE BROOK

0.1 MI S OF ROUTE 152, CT

Built 1946 Load: 21.4 t ADT: 2,200

INTERSTATE-291 WB

Good

Over: ROUTE 5 & CT SOUTHERN RR

2.75 MILES EAST OF I-91, CT

Built 1993 Load: 21.4 t ADT: 20,750

WALNUT STREET

Good

Over: HOCKANUM RIVER

200 FT. FROM JCT. RTE. 44, CT

Built 1942 Load: 21.7 t ADT: 6,300

FLATBUSH AVENUE

Good

Over: BUSWAY & AMTRAK RR

JUNC FLATBUSH & BUSWAY, CT

Built 2013 Load: 22.0 t ADT: 19,900

ROUTE 190

Good

Over: EDSON BROOK

450 EAST OF ROUTE 30, CT

Built 1950 Load: 22.4 t ADT: 7,400

US ROUTE 7

Good

Over: HOUSATONIC RIVER

GAYLORDSVILLE, CT

Built 1991 Load: 22.4 t ADT: 3,200

SR 724 Eastbound

Good

Over: US1 Local Rds P&W RR

AT WEST END OF Q-BRIDGE, CT

Built 2011 Load: 22.7 t ADT: 26,700

RIVER ROAD

Good

Over: QUANDUCK BROOK

0.5 MI EAST OF MAIN ST, CT

Built 1983 Load: 23.0 t ADT: 401

INTERSTATE 91 SB

Good

Over: KENEY PARK RD& MEADOW BK

0.1 MILE NORTH OF EXIT 34, CT

Built 1991 Load: 23.0 t ADT: 64,600

GRAY ROAD

Good

Over: NORTH BROOK

AT JCT OF MAPLE HOLLOW RD, CT

Built 1956 Load: 23.3 t ADT: 40

FORBES STREET

Good

Over: PORTER BROOK

100 FT.SOUTH OF MAPLE ST., CT

Built 1996 Load: 23.3 t ADT: 6,700

LONG HILL ROAD

Good

Over: INTERSTATE-291

1 MILE EAST ROUTE 5, CT

Built 1993 Load: 23.7 t ADT: 2,225

TAYLOR AVENUE

Good

Over: INTERSTATE-95

0.5 MI S OF US ROUTE 7, CT

Built 2014 Load: 24.0 t ADT: 6,200

ROUTE 207

Good

Over: SUSQUETONSCUT BROOK

0.7 MILES EAST OF RTE 87, CT

Built 1990 Load: 24.6 t ADT: 4,000

WEST THOMPSON ROAD

Good

Over: SPILLWAY CHANNEL

3.22 KM NORTH OF PUTNAM, CT

Built 1965 Load: 24.7 t ADT: 3,800

WHITE ROCK RD

Good

Over: PAWCATUCK RIVER

0.2 MI E OF ROUTE 2, CT

Built 1996 Load: 24.9 t ADT: 3,502

PLYMOUTH ROAD

Good

Over: ROCK BROOK

APP 200 N OF COVENTRY LN, CT

Built 1997 Load: 24.9 t ADT: 657

STODDARD ROAD

Good

Over: BANTAM RIVER

OFF WEST MORRIS ROAD, CT

Built 2004 Load: 24.9 t ADT: 250

SR 714

Good

Over: FARMILL RIVER

2.0 MI N OF ROUTE 108, CT

Built 1993 Load: 25.3 t ADT: 16,500

ROUTE 178

Good

Over: BEAMAN BROOK

1.2 MI EAST OF ROUTE 189, CT

Built 2022 Load: 25.6 t ADT: 10,300

I-95 NB TR 806

Good

Over: BROAD STREET

0.2. MI N OF ROUTE 8, CT

Built 1959 Load: 25.9 t ADT: 19,900

I-84 TR 838

Good

Over: INTERSTATE-84 TR 836

I-84 WB TR TO I-291 WB, CT

Built 1993 Load: 25.9 t ADT: 10,600

SR 536

Good

Over: QUINNIPIAC RIVER

.4 MILE EAST OF ROUTE 10, CT

Built 1946 Load: 26.2 t ADT: 6,100

ROUTE 322

Good

Over: MISERY BROOK

1.6 MI W OF I-691, CT

Built 1994 Load: 26.2 t ADT: 10,600

ROUTE 142

Good

Over: FARM RIVER

0.2 MI W OF ROUTE 100, CT

Built 1973 Load: 26.6 t ADT: 11,900

SILVER STREET

Good

Over: EAST BRANCH SALMON BROOK

40 NORTH OF ROUTE 189, CT

Built 2013 Load: 26.6 t ADT: 617

BRIDGE STREET

Good

Over: WEPAWAUG RIVER

0.2 MI S OF US ROUTE 1, CT

Built 1997 Load: 26.6 t ADT: 2,330

CLIFFDALE ROAD

Good

Over: BYRAM RIVER

.5 MI EAST OF KING ST, CT

Built 1925 Load: 26.6 t ADT: 585

ROUTE 9 NORTHBOUND

Good

Over: SR 505 {ELLA GRASSO BLD}

0.4 MI N OF ROUTE 175, CT

Built 1991 Load: 26.6 t ADT: 25,300

US ROUTE 6

Good

Over: CEDAR SWAMP BROOK

1 MILE WEST OF ROUTE 97, CT

Built 1993 Load: 26.6 t ADT: 9,000

I-91 TR 802

Good

Over: US ROUTE 1(WATER STREET)

EXIT 1 RAMP FROM 91 SB, CT

Built 2015 Load: 26.9 t ADT: 15,200

ROUTE 140

Good

Over: SCANTIC RIVER

0.1 MILE WEST OF RTE. 191, CT

Built 1935 Load: 26.9 t ADT: 12,900

OLD NORTHFIELD RD

Good

Over: BRANCH BROOK

6.44 KM SW OF THOMASTON, CT

Built 1950 Load: 26.9 t ADT: 4

I-95 NB TR 806

Good

Over: S. FRONTAGE RD & LAF. ST

RAMP FROM 8 SB TO I-95 NB, CT

Built 2000 Load: 27.2 t ADT: 17,500

Showing 2,951-3,000 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.