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

I-91 N.B. RAMPS

Fair

Over: WILLOW BROOK

I-91 N.B. EXIT NO. 16, CT

Built 1964 Load: 59.6 t ADT: 4,800

I-84 RAMP 202

Fair

Over: BANK STREET

EB On Ramp from Meadow St, CT

Built 1965 Load: 59.6 t ADT: 3,800

JEROME AVENUE

Fair

Over: COPPER MINE BROOK

50 FT FR JCT SHRUB ROAD, CT

Built 1956 Load: 59.6 t ADT: 5,054

ROUTE 136

Fair

Over: FIVE MILE RIVER

DARIEN-NORWALK TOWN LINE, CT

Built 1935 Load: 59.7 t ADT: 9,400

BROAD STREET

Fair

Over: I-84 WB & I-84 RAMP 191

.5MI W OF HIGH ST & I84WB, CT

Built 1966 Load: 59.8 t ADT: 8,400

I-84 TR 818

Fair

Over: SR 508 EASTBOUND

I-84 EB EXIT 39 OFF RAMP, CT

Built 1969 Load: 59.8 t ADT: 5,700

INTERSTATE 84 EB

Fair

Over: WASHINGTON STREET

.25 MILES WEST OF EXIT 24, CT

Built 1980 Load: 59.8 t ADT: 41,300

I-84 WB OFF RAMP

Fair

Over: BUCKLAND STREET

I-84 WESTBOUND EXIT 60/62, CT

Built 1984 Load: 59.8 t ADT: 8,600

INTERSTATE-95

Fair

Over: WEST AVENUE

2.1 MI S OF ROUTE 121, CT

Built 1957 Load: 59.9 t ADT: 97,600

ROUTE 15 SB

Fair

Over: QUINNIPIAC RIVER

1 MI. NO. OF JCT RTE 150, CT

Built 1946 Load: 59.9 t ADT: 35,800

INTERSTATE 84 EB

Fair

Over: I-84 RAMP 028

I-84 EB JUST PAST EXIT 11, CT

Built 1972 Load: 59.9 t ADT: 32,100

ROUTE 8 NORTHBOUND

Fair

Over: ROUTE 222 -NORTH MAIN ST

BETWEEN EXITS 39 & 40, CT

Built 1966 Load: 59.9 t ADT: 12,100

VACANT RTE. 9 RAMP

Fair

Over: I-84 I-84 TR 820 SR 506

FOURTH LEVEL-EXIT 39A, CT

Built 1970 Load: 59.9 t

INTERSTATE-91

Fair

Over: OLIVER ROAD

0.8 MILE NORTH OF EXIT 46, CT

Built 1960 Load: 59.9 t ADT: 99,000

INTERSTATE-95

Fair

Over: RIVER AVENUE

0.2 MI EAST OF NY LINE, CT

Built 1958 Load: 60.3 t ADT: 103,100

ROUTE 12

Fair

Over: WHETSTONE BROOK

2 MI NORTH OF US ROUTE 6, CT

Built 2000 Load: 60.3 t ADT: 9,100

ROUTE 15

Fair

Over: CRICKER BROOK

210 FT N OF ROUTE 58, CT

Built 1940 Load: 60.3 t ADT: 59,220

ROUTE 8 NB RAMP 12

Fair

Over: ROUTE 8 NB RAMP 127

ROUTE 8 NB EXIT 2, CT

Built 1968 Load: 60.3 t ADT: 6,800

INTERSTATE-84 WB

Fair

Over: ROUTE 31

AT EXIT 67, CT

Built 1978 Load: 60.4 t ADT: 36,450

INTERSTATE-91 SB

Fair

Over: STODDARD AVENUE

RT5 TO BROADWY TO ELM ST., CT

Built 1965 Load: 60.5 t ADT: 45,400

PARK AVENUE

Fair

Over: GULF STREAM

200 SOUTH OF E LAWTON ST, CT

Built 1960 Load: 60.5 t ADT: 284

I-84 TR 833 & RAMP

Fair

Over: DARLIN STREET

0.3 MI E OF FOUNDERS BRDG, CT

Built 1963 Load: 60.6 t ADT: 8,050

CONSTITUTION BLVD

Fair

Over: ROUTE 8

.1 MI N OF EXT 13 RTE 8 S, CT

Built 1975 Load: 60.6 t ADT: 15,500

GREEN HOLLOW ROAD

Fair

Over: U.S. ROUTE 6

0.5 MI E OF ROUTE 12, CT

Built 1967 Load: 60.6 t ADT: 1,650

ROUTE 9 SOUTHBOUND

Fair

Over: SAINT MARYS CEMETERY

0.6 MI N OF ROUTE 174, CT

Built 1978 Load: 60.6 t ADT: 35,000

SUFFIELD STREET

Fair

Over: STONY BROOK

2600 FEET FROM AUSTIN ST., CT

Built 2011 Load: 60.6 t ADT: 1,951

INTERSTATE 84 RAMP

Fair

Over: INTERSTATE 84 EASTBOUND

I-84 EB EXIT 36 OFF RAMP, CT

Built 1968 Load: 60.7 t ADT: 2,100

ROUTE 9 SOUTHBOUND

Fair

Over: ROUTE 153

275 FT S OF ROUTE 154, CT

Built 1966 Load: 60.7 t ADT: 14,200

INTERSTATE-95 SB

Fair

Over: SR 900 (KINGS HIGHWAY)

0.1 MI N OF US ROUTE 1, CT

Built 1964 Load: 60.8 t ADT: 27,500

INTERSTATE-84 EB

Fair

Over: SUNSET AVENUE #1

.6 MI E OF SOUTHINGTON TL, CT

Built 1965 Load: 60.8 t ADT: 41,300

ROUTE 40 NB RAMP 0

Fair

Over: I-91 NB TR 806

0.6 MI W OF ROUTE 103, CT

Built 1972 Load: 60.8 t ADT: 2,500

ROUTE 8 SB RAMP 00

Fair

Over: MAIN STREET NO. 3

ROUTE 8 SB EXIT 3, CT

Built 1970 Load: 60.9 t ADT: 5,300

ROUTE 25 SB TR 802

Fair

Over: ROUTE 15

1.5 MI N OF ROUTE 111, CT

Built 1981 Load: 60.9 t ADT: 7,400

ROUTE 2 EASTBOUND

Fair

Over: DARLIN STREET

0.3 MI E OF HARTFORD TL, CT

Built 1963 Load: 61.0 t ADT: 4,900

ROUTE 8 NORTHBOUND

Fair

Over: US ROUTE 1 NORTH AVE

1.9 MI N OF I 95, CT

Built 1970 Load: 61.0 t ADT: 52,100

ROUTE 72

Fair

Over: ROUTE 177

AT EXIT 1, CT

Built 1980 Load: 61.0 t ADT: 28,600

INTERSTATE-84

Fair

Over: SKUNGAMAUG RIVER

0.25 MI EAST OF ROUTE 195, CT

Built 1954 Load: 61.2 t ADT: 64,200

INTERSTATE-84 EB

Fair

Over: US ROUTE 44 EASTBOUND

.3 MI EAST OF HARTFORD TL, CT

Built 1964 Load: 61.2 t ADT: 64,550

ROUTE 25 SB RAMP 4

Fair

Over: ROUTE 25 SB TR 802

0.2 MI S OF ROUTE 127, CT

Built 1981 Load: 61.4 t ADT: 3,200

ROUTE 25 SB

Fair

Over: WHITNEY AVENUE

1.0 MI S OF ROUTE 111, CT

Built 1980 Load: 61.5 t ADT: 18,900

RIVER ROAD #1

Fair

Over: INTERSTATE 84

I-84 EXIT 13, CT

Built 1978 Load: 61.6 t ADT: 3,335

I-91 SB & TR 813

Fair

Over: BEE STREET

.18 MI SO OF I-691 EB OP, CT

Built 1965 Load: 61.7 t ADT: 22,500

ROUTE 8 SOUTHBOUND

Fair

Over: ROUTE 222 - EAST MAIN ST

AT EXIT 39, CT

Built 1966 Load: 61.7 t ADT: 9,900

GRAYS BRIDGE ROAD

Fair

Over: STILL RIVER

1 MILE NE INT RTE 202, CT

Built 1975 Load: 61.7 t ADT: 9,600

INTERSTATE-91

Fair

Over: POST OFFICE ROAD

1.4 MILE SOUTH OF EXIT 47, CT

Built 1960 Load: 61.7 t ADT: 99,000

US ROUTE 1

Fair

Over: MIANUS RIVER

0.2 MI NORTH OF ROUTE 95, CT

Built 1960 Load: 61.8 t ADT: 19,900

SR 500 TR 801&802

Fair

Over: PITKIN STREET

0.4 MI SO. OF GOVERNOR ST, CT

Built 1964 Load: 61.8 t ADT: 10,500

ROUTE 15

Fair

Over: AMTRAK RAILROAD

600 FT SOUTH OF ROUTE 5, CT

Built 1947 Load: 61.9 t ADT: 69,500

ROUTE 272

Fair

Over: HALL MEADOW BROOK

1.24 MI N OF GOSHEN T.L., CT

Built 1988 Load: 61.9 t ADT: 1,100

ROUTE 34

Fair

Over: DERBY CANAL

0.8 MI W OF ROUTE 8, CT

Built 1952 Load: 61.9 t ADT: 9,600

Showing 2,601-2,650 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.