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

RT 82EB & RT 32NB

Fair

Over: NEC RR & YANTIC RIVER

0.1 MI WEST OF ROUTE 2, CT

Built 1986 Load: 18.8 t ADT: 10,400

INTERSTATE-95 NB

Fair

Over: TAUGWONK ROAD

0.7 MI N OF ROUTE 234, CT

Built 1964 Load: 19.1 t ADT: 17,500

ALLINGS CROSSING

Fair

Over: METRO NORTH RAILROAD

0.3 MI E OF ROUTE 162, CT

Built 1970 Load: 19.1 t ADT: 10,153

ELLIS STREET

Fair

Over: ROUTE 9 & RTE 9 RAMPS

EXIT 25 FROM RTE 9, CT

Built 1975 Load: 19.1 t ADT: 8,600

US ROUTE 202

Fair

Over: W BRANCH NAUGATUCK RV

INTER US202 & SR800, CT

Built 1958 Load: 19.4 t ADT: 15,900

ROUTE 19

Fair

Over: FURNACE BROOK

1.6 MI NORTH OF ROUTE 319, CT

Built 1952 Load: 19.4 t ADT: 2,000

ROUTE 178

Fair

Over: WASH BROOK

0.1 MILES WEST OF RTE 189, CT

Built 1926 Load: 19.4 t ADT: 8,400

HALL AVENUE

Fair

Over: AMTRAK RAILROAD

500 E OF ROUTE 71, CT

Built 1946 Load: 19.4 t ADT: 7,200

US ROUTE 1

Fair

Over: METRO NORTH & PEQUOT AVE

0.3 MI S OF I-95, CT

Built 1992 Load: 19.4 t ADT: 13,900

RTE 1

Fair

Over: BYRAM RIVER

NEW YORK STATE LINE, CT

Built 1888 Load: 19.6 t ADT: 14,570

I-84 TR 822

Fair

Over: TROUT BK & TROUT BK DR

I-84 WB EXIT 43 OFF RAMP, CT

Built 1965 Load: 19.8 t ADT: 6,600

I-691 RAMP 009

Fair

Over: I-691RMP 008 COLUMBIA ST

OVER ENT RAMP FROM LEWIS, CT

Built 1971 Load: 19.8 t ADT: 1,900

ROUTE 9 SOUTHBOUND

Fair

Over: ROUTE 81 & PONSET BROOK

0.5 MI S OF NB EXIT #9, CT

Built 1966 Load: 19.8 t ADT: 13,800

ROUTE 22

Fair

Over: ROUTE 40

0.9 MI S OF ROUTE 10, CT

Built 1976 Load: 19.8 t ADT: 5,700

DENNISON ROAD

Fair

Over: CONN VALLEY RAILROAD

580 FT N OF ROUTE 154, CT

Built 1910 Load: 19.8 t ADT: 1,274

JUDDS BRIDGE ROAD

Fair

Over: SHEPAUG RIVER

INT. WITH BATTLE SWAMP RD, CT

Built 1987 Load: 19.8 t ADT: 34

ROUTE 47

Fair

Over: SHEPAUG RIVER

0.05 MI S OF ROUTE 109, CT

Built 1958 Load: 20.1 t ADT: 3,200

SR 796

Fair

Over: US ROUTE 1

0.4 MI S OF I95, CT

Built 1941 Load: 20.4 t ADT: 5,500

US ROUTE 1

Fair

Over: MYSTIC RIVER

.5 MILES EAST OF SR 614, CT

Built 1922 Load: 20.4 t ADT: 11,000

ROUTE 67

Fair

Over: BLADENS RIVER

0.9 MI E OF ROUTE 8, CT

Built 1928 Load: 20.4 t ADT: 11,100

ROUTE 68

Fair

Over: AMTRAK & US ROUTE 5

3 MILE WEST OF I-91 X-CRS, CT

Built 1965 Load: 20.4 t ADT: 15,900

I-84 WB TR827

Fair

Over: I-84 SR.500 AND RAMPS

RT.2WB. RAMP TO I-84 WB., CT

Built 1994 Load: 20.4 t ADT: 21,800

ROUTE 40 NB

Fair

Over: I-91 & TR 806 RTE 40-007

0.4 MI N OF I-91 NB, CT

Built 1972 Load: 20.4 t ADT: 6,900

ROUTE 83

Fair

Over: INTERSTATE-384

1.6 MILE N GLASTONBURY TL, CT

Built 1970 Load: 20.4 t ADT: 16,100

I-291 RAMP C

Fair

Over: ROUTE 5 & CT SOUTHERN RR

2.75 MILES EAST OF I-91, CT

Built 1993 Load: 20.4 t ADT: 4,500

US ROUTE 1

Fair

Over: METRO NORTH RAILROAD

AT INT. WITH STATE ST. N, CT

Built 1900 Load: 20.7 t ADT: 7,100

ROUTE 2

Fair

Over: SHETUCKET RIVER

INTERSECTION OF ROUTE 12, CT

Built 1938 Load: 20.7 t ADT: 12,900

ROUTE 15

Fair

Over: ROUTE 136

1.8 MI WEST TOWN LINE, CT

Built 1938 Load: 20.7 t ADT: 66,420

I-91 SB & RAMP #13

Fair

Over: EAST STREET

1.2 MI N I-95, CT

Built 1965 Load: 20.7 t ADT: 73,400

ROUTE 16

Fair

Over: ROUTE 2

1.2 MI W OF ROUTE 85, CT

Built 1966 Load: 20.7 t ADT: 14,000

ROUTE 2A

Fair

Over: GALLIVAN LANE

0.5 MI E OF I-395, CT

Built 1967 Load: 20.7 t ADT: 29,700

ROUTE 59

Fair

Over: ROOSTER RIVER

370 NO. OF BRIDGEPORT TL, CT

Built 1985 Load: 20.7 t ADT: 9,200

SSR 476

Fair

Over: INTERSTATE 95

AT I-95 EXIT 18, CT

Built 1958 Load: 21.1 t ADT: 8,800

ROUTE 222

Fair

Over: NAUGATUCK RIVER

500 W OF EXT 39 ROUTE 8, CT

Built 1930 Load: 21.1 t ADT: 8,300

ROUTE 67

Fair

Over: SECOND HILL BROOK

100 E. OF BRIDGEWATER TL, CT

Built 1958 Load: 21.1 t ADT: 3,900

ROUTE 172

Fair

Over: POMPERAUG RIVER

I 84 EXIT 14 & 1 MILE NOR, CT

Built 1939 Load: 21.1 t ADT: 7,000

ROUTE 8 SOUTHBOUND

Fair

Over: BRANCH BROOK

0.1 MILE SOUTH OF EXIT 38, CT

Built 1964 Load: 21.1 t ADT: 17,000

ROUTE 40 SB

Fair

Over: CSX RR QUINNIPIAC RIVER

0.6 MI N OF I-91 NB, CT

Built 1972 Load: 21.1 t ADT: 22,200

INTERSTATE-384 EB

Fair

Over: BIRCH MOUNTAIN BROOK

AT EXIT 4, CT

Built 1970 Load: 21.1 t ADT: 19,350

ROUTE 30 & 83

Fair

Over: TANKERHOOSEN RIVER

0.3 MI E OF MANCHESTER TL, CT

Built 1932 Load: 21.1 t ADT: 18,600

OLD ROCK LANE

Fair

Over: FIVE MILE RIVER

0.2 MI E OF W. NORWALK RD, CT

Built 1987 Load: 21.1 t ADT: 920

INTERSTATE-95

Fair

Over: MIANUS RIVER & LOCAL RDS

BETWEEN EXITS 4 & 5, CT

Built 1958 Load: 21.1 t ADT: 120,300

SASCO CREEK ROAD

Fair

Over: INTERSTATE 95

1.5 MILE NORTH OF SSR 476, CT

Built 1958 Load: 21.4 t ADT: 1,015

ROUTE 8

Fair

Over: RTE 313 & NAUGATUCK RIV

0.3 MI S OF ROUTE 67, CT

Built 1961 Load: 21.4 t ADT: 53,800

ROUTE 80

Fair

Over: ROGERS POND

0.2 MI E OF ROUTE 9, CT

Built 1941 Load: 21.4 t ADT: 5,700

ROUTE 181

Fair

Over: W BR FARMINGTON RIVER

ROUTE 181 & 318, CT

Built 1939 Load: 21.4 t ADT: 6,600

TRUMBULL STREET

Fair

Over: I-84 TR 839 & TR 841

SO END OF STRUCT CHAPEL S, CT

Built 1964 Load: 21.4 t ADT: 4,900

ROUTE 42

Fair

Over: NAUGATUCK RIVER AND MNRR

0.4 MILE WEST OF ROUTE 8, CT

Built 1966 Load: 21.4 t ADT: 7,100

BERLIN STREET

Fair

Over: P & W RAILROAD

0.3 MI W OF ROUTE 66, CT

Built 1936 Load: 21.4 t ADT: 167

STEELE ROAD

Fair

Over: BROOK

.1MI SOUTH OF ROUTE 219, CT

Built 1957 Load: 21.4 t ADT: 268

Showing 51-100 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.