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

ROUTE 334

Fair

Over: ROUTE 8

2.9 MI NORTH OF ROUTE 34, CT

Built 1959 Load: 39.9 t ADT: 9,100

ROUTE 32

Fair

Over: SMITH COVE

1.3 MI S OF SR 693, CT

Built 1940 Load: 39.9 t ADT: 16,100

INTERSTATE 84 WB

Fair

Over: LONG MEADOW ROAD

1.3 MI E MDBY-SOBRY TL, CT

Built 1964 Load: 39.9 t ADT: 36,800

INTERSTATE 84 WB

Fair

Over: ROUTE 188

.7 MI W OF EXIT 17, CT

Built 1964 Load: 39.9 t ADT: 35,300

INTERSTATE-84 EB

Fair

Over: MARION AVENUE

INTERSTATE 84 AT EXIT 30, CT

Built 1963 Load: 39.9 t ADT: 46,700

US ROUTE 6 WB

Fair

Over: FLANDERS RIVER ROAD

0.3 MI WEST OF WINDHAM TL, CT

Built 1971 Load: 39.9 t ADT: 7,200

US ROUTE 6 EB

Fair

Over: FLANDERS RIVER ROAD

0.3 MI WEST OF WINDHAM TL, CT

Built 1971 Load: 39.9 t ADT: 6,900

ROUTE 8 SOUTHBOUND

Fair

Over: ARMSTRONG ROAD

2.5 MI N OF ROUTE 15, CT

Built 1975 Load: 39.9 t ADT: 33,300

INTERSTATE-91 SB

Fair

Over: NORTH ROAD

0.68 MI NORTH OF RTE 372, CT

Built 1965 Load: 39.9 t ADT: 58,900

ROUTE 3

Fair

Over: I-91 & DIVIDEND BROOK

.07 MI NO OF BROOK ST INT, CT

Built 1965 Load: 39.9 t ADT: 16,500

ROUTE 9 SOUTHBOUND

Fair

Over: SR 571

AT ROUTE 9/ RT 372, CT

Built 1968 Load: 39.9 t ADT: 38,300

ROUTE 372

Fair

Over: ROUTE 9

ROUTE 9 EXIT NO. 19, CT

Built 1967 Load: 39.9 t ADT: 18,400

ROUTE 8

Fair

Over: PROSPECT STREET

0.4 MI N OF I-95, CT

Built 1968 Load: 39.9 t ADT: 83,400

GROVE STREET

Fair

Over: HOUSATONIC RIVER

0.25 MILE EAST OF ROUTE 7, CT

Built 1977 Load: 39.9 t ADT: 7,900

WELLSVILLE AVENUE

Fair

Over: EAST ASPETUCK RIVER

0.3 MI S OF PAPER MILL RD, CT

Built 1937 Load: 39.9 t ADT: 4,097

ROUTE 25 NB TR 801

Fair

Over: ROUTE 15

RT 25 NB EXIT NO. 7, CT

Built 1981 Load: 39.9 t ADT: 9,700

BRICKYARD ROAD

Fair

Over: QUINEBAUG RIVER

3 MI SOUTH OF ROUTE 131, CT

Built 1956 Load: 39.9 t ADT: 208

INTERSTATE 691 WES

Fair

Over: SOUTH END ROAD

1 MILE EAST OF ROUTE 10, CT

Built 1984 Load: 39.9 t ADT: 28,000

I-95 NB Exit 8 Off

Fair

Over: Atlantic Street

I-95 NB Exit 8 Off Ramp, CT

Built 2015 Load: 39.9 t ADT: 10,600

KIRKHAM STREET

Fair

Over: AMTRAK RAILROAD

0.5 MI S. OF ROUTE 146, CT

Built 1892 Load: 40.0 t ADT: 5,000

GOOSENECK HILL RD

Fair

Over: CORY BROOK

0.5 MI WEST OF ROUTE 169, CT

Built 1940 Load: 40.0 t ADT: 414

WESLEY AVENUE

Fair

Over: PATCHOGUE RIVER

500 FT N OF US ROUTE 1, CT

Built 1991 Load: 40.0 t ADT: 300

ROUTE 222

Fair

Over: NAUGATUCK RIVER

0.4 MI NORTH OF MAIN ST, CT

Built 1960 Load: 40.1 t ADT: 900

ROUTE 9 NORTHBOUND

Fair

Over: HUBBARD ROAD

1.0 MI S OF ROUTE 81, CT

Built 1966 Load: 40.1 t ADT: 15,600

ROUTE 9 SOUTHBOUND

Fair

Over: CEDAR LAKE ROAD

3/4 MI. NO OF CHESTER TL, CT

Built 1967 Load: 40.1 t ADT: 15,500

HALES ROAD

Fair

Over: INTERSTATE-95

0.9MI N OF ROUTE 136, CT

Built 1958 Load: 40.2 t ADT: 1,197

WEST RIVER STREET

Fair

Over: INTERSTATE-95

0.2 MI S OF ROUTE 121, CT

Built 1958 Load: 40.2 t ADT: 1,062

VAUXHALL STREET EX

Fair

Over: INTERSTATE-395

3.0 MI N. OF I-95, CT

Built 1957 Load: 40.2 t ADT: 3,300

ROUTE 222

Fair

Over: NAUGATUCK RIVER OVERFLOW

0.2 MILE NORTH OF ROUTE 6, CT

Built 1958 Load: 40.2 t ADT: 8,300

DOG HILL ROAD

Fair

Over: INTERSTATE-395

.5 MI SOUTH OF ROUTE 101, CT

Built 1962 Load: 40.2 t ADT: 1,200

ROUTE 11 SB

Fair

Over: WITCH MEADOW ROAD

2.72 MI NORTH OF RTE 82, CT

Built 1971 Load: 40.2 t ADT: 4,400

ROUTE 243

Fair

Over: RACE BROOK

0.6 MILE WEST ROUTE 313, CT

Built 1996 Load: 40.2 t ADT: 3,100

ROUTE 8 SOUTHBOUND

Fair

Over: METRO NORTH RAILROAD

.7 MI N OF NAUG./WTBY TL, CT

Built 1966 Load: 40.2 t ADT: 25,800

I-84 TR 816

Fair

Over: RTE372 PAN RR QUINNIPIAC

EXIT 6 ON ROUTE 72 WB, CT

Built 1969 Load: 40.2 t ADT: 4,700

ROUTE 9 SOUTHBOUND

Fair

Over: TURKEY HILL ROAD

0.6 MI N OF ROUTE 82, CT

Built 1967 Load: 40.2 t ADT: 15,500

ROUTE 8 SOUTHBOUND

Fair

Over: KENNEDY DRIVE

AT EXIT 45, CT

Built 1967 Load: 40.2 t ADT: 8,400

MERROW ROAD

Fair

Over: WILLIMANTIC RIVER

750 FT FROM JCT ROUTE 32, CT

Built 1956 Load: 40.2 t ADT: 700

RUSSELL STREET

Fair

Over: SUMNER BROOK

150 FT W OF E MAIN ST, CT

Built 1935 Load: 40.2 t ADT: 3,366

RHODE ISLND LINE R

Fair

Over: MARY BROWN BROOK

0.2 MILE EAST OF ROUTE 44, CT

Built 1987 Load: 40.2 t ADT: 105

ROUTE 372 (CORBIN

Fair

Over: PAN AM RAILROAD

.1 MI SOUTH OF ROUTE 555, CT

Built 1989 Load: 40.2 t ADT: 20,300

ROUTE 159

Fair

Over: FARMINGTON RIVER

0.4 MILE NORTH OF RTE 75, CT

Built 1991 Load: 40.2 t ADT: 6,600

INTERSTATE-91 NB

Fair

Over: CSX RAILROAD

2.3 MI N OF ROUTE 17, CT

Built 1965 Load: 40.3 t ADT: 58,600

ROUTE 68

Fair

Over: HOP BROOK

AT JUNCTION WITH ROUTE 63, CT

Built 1933 Load: 40.4 t ADT: 10,800

MELL ROAD

Fair

Over: INTERSTATE-395

0.2 MI NORTH OF RTE 169, CT

Built 1958 Load: 40.5 t ADT: 468

ROUTE 103

Fair

Over: MUDDY RIVER

1.2 MI N0 MONTOWESE AVE, CT

Built 1961 Load: 40.5 t ADT: 7,700

ROUTE 15

Fair

Over: ROUTE 123

ROUTE 15 EXIT NO. 38, CT

Built 1937 Load: 40.5 t ADT: 75,020

DERBY MILFORD ROAD

Fair

Over: ROUTE 15

3.7 MI N. OF ROUTE 110, CT

Built 1941 Load: 40.5 t ADT: 7,600

ROUTE 190

Fair

Over: INTERSTATE-91

0.3 MILE EAST OF U.S. 5, CT

Built 1960 Load: 40.5 t ADT: 30,400

ROUTE 8 NORTHBOUND

Fair

Over: NICHOLS DRIVE

1.3 MILE NORTH OF EXIT 29, CT

Built 1965 Load: 40.5 t ADT: 27,000

INTERSTATE-395 NB

Fair

Over: PROV & WORC RAILROAD

2.3 MI NORTH OF ROUTE 101, CT

Built 1968 Load: 40.5 t ADT: 16,700

Showing 1,551-1,600 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.