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

INTERSTATE 691 WES

Fair

Over: QUINNIPIAC RIVER

50 FT EAST OF CHESHIRE TL, CT

Built 1984 Load: 57.3 t ADT: 28,000

MIDDLETOWN AVENUE

Fair

Over: QUINNIPIAC RIVER

100 NORTH OF FRONT ST, CT

Built 1989 Load: 57.3 t ADT: 13,545

INTERSTATE 95

Fair

Over: ARCH STREET

ROUTE I 95 EXIT 3, CT

Built 1958 Load: 57.4 t ADT: 101,800

ROUTE 8 SOUTHBOUND

Fair

Over: US ROUTE 1 NORTH AVE

1.9 MI N. OF I95, CT

Built 1970 Load: 57.4 t ADT: 54,300

ROUTE 15

Fair

Over: BAYBERRY LANE #1

0.4 MI WEST OF TOWN LINE, CT

Built 1939 Load: 57.5 t ADT: 66,420

M L KING JR DRIVE

Fair

Over: METRO-NORTH RAILROAD

1.4 MI N OF ROUTE 136, CT

Built 1972 Load: 57.5 t ADT: 11,600

ROUTE 66 EASTBOUND

Fair

Over: ROUTE 66 RAMP 004

AT EXIT 13 WESTBOUND, CT

Built 1965 Load: 57.6 t ADT: 11,700

KROL ROAD

Fair

Over: ELLIS BROOK

200 FT SOUTH OF RT 190, CT

Built 1991 Load: 57.6 t ADT: 23

I-95 RAMP 093

Fair

Over: NICHOLS STREET

ON RAMP TO I-95 SOUTH, CT

Built 1959 Load: 57.7 t ADT: 4,400

INTERSTATE 395

Fair

Over: RTE 97 & SHETUCKET RIVER

JCT of I-395 & ROUTE 97, CT

Built 1958 Load: 57.7 t ADT: 41,600

INTERSTATE-91 SB

Fair

Over: AMTRAK RAILROAD

.68 MILES N OF ROUTE 22, CT

Built 1965 Load: 57.7 t ADT: 39,900

ROUTE 8 NORTHBOUND

Fair

Over: WELLS STREET

1.9 MI N OF I-95, CT

Built 1970 Load: 57.7 t ADT: 53,700

INTERSTATE-95

Fair

Over: HOWARD AVENUE

0.8 MI S OF ROUTE 8, CT

Built 1959 Load: 58.0 t ADT: 129,100

ROUTE 72

Fair

Over: POLAND RIVER

0.1 MI NO. OF PLYMOUTH TL, CT

Built 1927 Load: 58.0 t ADT: 2,000

ROUTE 9 TR 806

Fair

Over: INTERSTATE-84 & RAMPS

ROUTE 9 RAMP TO WB I-84, CT

Built 1969 Load: 58.0 t ADT: 9,700

ROUTE 34

Fair

Over: WEST RIVER

0.2 MI W OF ROUTE 10, CT

Built 1925 Load: 58.0 t ADT: 22,100

I-291 & I-84 TR 83

Fair

Over: I-84 RAMP 301

EXIT 60 I-84 WB 1 MILE, CT

Built 1987 Load: 58.0 t ADT: 18,900

US ROUTE 44

Fair

Over: STILL RIVER

AT INTERSECTION OF RT 198, CT

Built 1991 Load: 58.0 t ADT: 6,100

ROUTE 25 NB

Fair

Over: ROUTE 15 & TR 806

1.4 MI N OF ROUTE 8, CT

Built 1981 Load: 58.1 t ADT: 15,100

US ROUTE 5 &RTE 15

Fair

Over: ROUTE 99-SILAS DEANE HWY

0.3 MI SOUTH HARTFORD TL, CT

Built 1942 Load: 58.3 t ADT: 41,200

ROUTE 171

Fair

Over: QUINEBAUG RIVER

.3 MI W OF US ROUTE 44, CT

Built 1952 Load: 58.3 t ADT: 9,700

STILL ROAD

Fair

Over: TUMBLE BROOK

300 WEST OF ROUTE 218, CT

Built 1916 Load: 58.3 t ADT: 396

DAVIS HILL ROAD

Fair

Over: SAUGATUCK RIVER

JUNCTION VALLEY FORGE RD, CT

Built 1980 Load: 58.3 t ADT: 620

ROUTE 9 NORTHBOUND

Fair

Over: ROUTE 372

AT EXIT 21, CT

Built 1988 Load: 58.3 t ADT: 29,200

WEWAKA BROOK ROAD

Fair

Over: WEWAKA BROOK

1.85M S OF INT RTE133&867, CT

Built 1933 Load: 58.3 t ADT: 260

ROUTE 15

Fair

Over: US ROUTE 5

1.23 MI SOUTH OF MERIDEN, CT

Built 1998 Load: 58.4 t ADT: 60,400

INTERSTATE-395

Fair

Over: MOOSUP RIVER & ROUTE 14

2.4 MI NORTH OF ROUTE 14A, CT

Built 1958 Load: 58.6 t ADT: 27,800

ROUTE 15

Fair

Over: ROUTE 53

1.1 MI S OF ROUTE 33, CT

Built 1937 Load: 58.6 t ADT: 59,320

KENT ROAD

Fair

Over: NORWALK RIVER

100 FEET WEST OF ROUTE 7, CT

Built 1956 Load: 58.6 t ADT: 3,050

ROUTE 67

Fair

Over: SHEPAUG RIVER

1 MILE WEST OF ROUTE 199, CT

Built 1990 Load: 58.6 t ADT: 1,200

ACCESS ROAD

Fair

Over: THOMASTON SPILLWAY CHANN

.80 KM E CT RTE. 8, CT

Built 1960 Load: 58.7 t ADT: 40

US ROUTE 6

Fair

Over: DNBY TERM/HOUSATONIC RR

1.3 MI EAST CT NY SL, CT

Built 1950 Load: 58.8 t ADT: 7,100

INTERSTATE-395

Fair

Over: DOW ROAD

1 MI SOUTH OF ROUTE 14A, CT

Built 1958 Load: 59.0 t ADT: 28,600

ROUTE 8 SOUTHBOUND

Fair

Over: NAUGATUCK RIVER & ACCESS

.64 MI NORTH OF US RTE 6, CT

Built 1966 Load: 59.0 t ADT: 12,000

INTERSTATE 84 TR 8

Fair

Over: INTERSTATE 84 RAMP 207

ROUTE 4 RAMP TO I-84 WB, CT

Built 1969 Load: 59.0 t ADT: 8,100

INTERSTATE-84 WB

Fair

Over: BUCKLAND STREET

2.8 MI WEST OF VERNON TL, CT

Built 1984 Load: 59.0 t ADT: 56,350

CIDER MILL ROAD

Fair

Over: COGINCHAUG RIVER

235 FT E OF ROUTE 157, CT

Built 1933 Load: 59.0 t ADT: 1,050

INTERSTATE 95

Fair

Over: U.S. ROUTE 1

INTERSTATE-95 EXIT NO. 19, CT

Built 1958 Load: 59.1 t ADT: 104,300

SR 664

Fair

Over: SR 695

1 MI SOUTH OF US ROUTE 6, CT

Built 1958 Load: 59.1 t ADT: 900

ROUTE 8 SOUTHBOUND

Fair

Over: ROUTE 8 SB RAMP 126

ROUTE 8 SB EXIT NO 2, CT

Built 1968 Load: 59.1 t ADT: 36,800

I-95 TR 817

Fair

Over: SR 635 & STATE PIER RD

EXIT 84 I-95 SOUTH, CT

Built 1975 Load: 59.2 t ADT: 17,600

INTERSTATE-91 SB

Fair

Over: ROUTE 372

I-91 OVER ROUTE 372, CT

Built 1965 Load: 59.2 t ADT: 53,400

INTERSTATE-91 NB

Fair

Over: ROUTE 372

1.55 MI SOUTH OF ROUTE 9, CT

Built 1965 Load: 59.2 t ADT: 55,300

INTERSTATE-95

Fair

Over: RICHARDS AVENUE

0.4 M EAST OF EXIT 13, CT

Built 1956 Load: 59.3 t ADT: 115,900

ROUTE 2

Fair

Over: GRISWOLD STREET

.8 MI(W)OF HEBRON AVENUE, CT

Built 1950 Load: 59.3 t ADT: 74,400

ROUTE 179

Fair

Over: BURLINGTON BROOK

100 FEET NORTH OF ROUTE 4, CT

Built 1961 Load: 59.3 t ADT: 9,800

INTERSTATE-691 EB

Fair

Over: GRAVEL STREET

.5 MI WEST OF EXIT 10, CT

Built 1965 Load: 59.3 t ADT: 41,200

EIGHTH STREET

Fair

Over: CANAL-SHETUCKET RIVER

.1 MILES EAST OF ROUTE 12, CT

Built 1964 Load: 59.3 t ADT: 4,600

ROUTE 72 WESTBOUND

Fair

Over: RTE 9SB & RTE 9-RAMP 055

AT BEGINNING OF ROUTE 72, CT

Built 1978 Load: 59.3 t ADT: 15,900

CROWN STREET

Fair

Over: CHURCH STREET TUNNEL

BETWEEN CHURCH & TEMPLE, CT

Built 1963 Load: 59.3 t ADT: 4,500

Showing 2,551-2,600 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.