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 218

Fair

Over: INTERSTATE-91 SOUTHBOUND

0.5 MI W OF ROUTE 159, CT

Built 1990 Load: 73.9 t ADT: 17,400

ROUTE 15

Fair

Over: SR 717 (DIXWELL AVE)

0.7 MI S OF ROUTE 40, CT

Built 1946 Load: 74.2 t ADT: 72,300

INTERSTATE-95

Fair

Over: KEELER BROOK

0.75 MILE N. OF DARIEN TL, CT

Built 1958 Load: 74.2 t ADT: 115,900

ROUTE 32 NB

Fair

Over: WILLIAMS STREET NO 1

0.2 MI S OF I-95, CT

Built 1975 Load: 74.8 t ADT: 4,900

US ROUTE 1

Fair

Over: QUEACH BROOK

0.7 MI S OF I-95, CT

Built 2009 Load: 75.1 t ADT: 15,500

CLINTON AVENUE

Fair

Over: ROUTE 15

RT 15 BETWEEN EXITS 41&42, CT

Built 1940 Load: 75.2 t ADT: 1,865

SELLECK STREET

Fair

Over: METRO NORTH RAILROAD

FAIRFIELD AVE INTERSECTN, CT

Built 1919 Load: 75.5 t ADT: 10,000

ROUTE 20

Fair

Over: MOOSEHORN BROOK

1.2 MILES WEST OF RTE 219, CT

Built 1957 Load: 75.8 t ADT: 1,300

EAST STREET

Fair

Over: MILL BROOK

0.1 MILE EAST OF ROUTE 75, CT

Built 1953 Load: 76.1 t ADT: 700

INTERSTATE 95

Fair

Over: METRO-NORTH RAILROAD

BETWEEN EXITS 24 & 25, CT

Built 2006 Load: 76.4 t ADT: 110,600

ROUTE 219

Fair

Over: MOUNTAIN BROOK

.8 MI N OF BARKHAMSTED TL, CT

Built 1959 Load: 76.8 t ADT: 6,700

ROUTE 25 SB TR 802

Fair

Over: ROUTE 25 NB TR 801

ROUTE 25 SB EXIT NO. 8, CT

Built 1980 Load: 78.4 t ADT: 7,400

ROUTE 15 TR 810

Fair

Over: ROUTE 15 & ROUTE 8

ROUTE 15 SB EXIT NO. 52, CT

Built 1984 Load: 78.9 t ADT: 13,200

WHITE BIRCH DRIVE

Fair

Over: EAST RIVER

0.2 MI N OF NUT PLAINS RD, CT

Built 1999 Load: 79.4 t ADT: 108

ROUTE 8 NORTHBOUND

Fair

Over: WEST MAIN STREET NO.1

AT EXIT 33, CT

Built 1965 Load: 80.7 t ADT: 35,200

INTERSTATE-84

Fair

Over: INTERSTATE-84 TR 836

0.1 MI W OF MANCHESTER TL, CT

Built 1986 Load: 80.7 t ADT: 122,000

NEWFIELD AVENUE

Fair

Over: ROUTE 15

1.2 MI S OF ROUTE 106, CT

Built 1937 Load: 81.6 t ADT: 6,200

SR 500 TR 805

Fair

Over: I-84 WB & I-84-829

.25 MILE S OF GOVERNOR ST, CT

Built 1998 Load: 82.0 t ADT: 3,800

TRIANGLE STREET

Fair

Over: STILL RIVER

0.6 MILE SOUTH OF SR 806, CT

Built 1960 Load: 82.6 t ADT: 8,345

WEST CENTER ST EXT

Fair

Over: DAYTON BROOK

0.4 MI W OF I-84, CT

Built 1965 Load: 82.6 t ADT: 1,994

ROUTE 3 NORTHBOUND

Fair

Over: I-91 TR 802

0.8 MILE NORTH OF RTE. 99, CT

Built 1994 Load: 82.7 t ADT: 9,600

INTERSTATE-95

Fair

Over: SASCO CREEK

WESTPORT-FAIRFIELD T.L., CT

Built 1958 Load: 85.2 t ADT: 110,400

BRIDGE ST #1

Fair

Over: AMTRAK

0.3 MI W OF US ROUTE 1, CT

Built 1936 Load: 85.9 t ADT: 2,200

INTERSTATE-691

Fair

Over: ABANDONED RAILROAD LINE

0.2 MI W OF ROUTE 5, CT

Built 1971 Load: 86.2 t ADT: 78,500

ROUTE 15

Fair

Over: RIPPOWAM RIVER

0.5 MI SOUTH OF ROUTE 137, CT

Built 1936 Load: 86.5 t ADT: 73,120

QUADDICK ROAD

Fair

Over: FIVE MILE RIVER

2 MI EAST OF ROUTE 193, CT

Built 1930 Load: 86.5 t ADT: 1,167

B&M RR & HIGH ST

Fair

Over: ROUTE 72

RTE 72 BETWEEN I84 &RTE 9, CT

Built 1976 Load: 88.0 t ADT: 6,800

CHAPEL STREET #1

Fair

Over: WEST RIVER

0.1 MILE EAST OF YALE AVE, CT

Built 1991 Load: 89.6 t ADT: 4,400

JAMES FARM ROAD

Fair

Over: ROUTE 15

0.8 MI S OF ROUTE 110, CT

Built 1940 Load: 89.7 t ADT: 2,815

INTERSTATE-95

Fair

Over: LYME STREET

0.7 MI N OF US ROUTE 1, CT

Built 1948 Load: 89.8 t ADT: 59,000

ROUTE 138

Fair

Over: PACHAUG RIVER

.1 MI EAST OF ROUTE 12, CT

Built 1946 Load: 89.8 t ADT: 3,900

SR 712 (BRIDGE ST)

Fair

Over: HOUSATONIC RIVER

0.13 MI EAST OF RTE 110, CT

Built 1918 Load: 89.8 t ADT: 9,500

INTERSTATE-91 NB

Fair

Over: CT SOUTHERN RR

.1MI(N)OF CHARTER OAK BRG, CT

Built 1991 Load: 90.4 t ADT: 52,000

ROUTE 15

Fair

Over: ROUTE 127

1.4 MILES S OF ROUTE 8, CT

Built 1934 Load: 90.5 t ADT: 82,300

INTERSTATE-95

Fair

Over: NORTH BRIDE BROOK ROAD

2.3 MI S. OF ROUTE 161, CT

Built 1958 Load: 91.9 t ADT: 61,700

OAKWOOD DRIVE # 1

Fair

Over: STREAM

0.1 MI SOUTH OF STEELE ST, CT

Built 1970 Load: 92.0 t ADT: 65

CAPITOL AVENUE

Fair

Over: ROOSTER RIVER OVERFLOW

0.1 MI E OF ROUTE 59, CT

Built 1907 Load: 93.3 t ADT: 7,390

JUDE LANE

Fair

Over: EIGHT MILE RIVER

475 FT W OF I-84, CT

Built 1980 Load: 93.3 t ADT: 2,493

ROUTE 25

Fair

Over: HOUSATONIC RAILROAD

.25 MI EAST OF ROUTE 7, CT

Built 1989 Load: 94.0 t ADT: 5,100

BELL STREET

Fair

Over: SAWMILL BROOK

200 FT N OF SAWMILL ROAD, CT

Built 1955 Load: 94.6 t ADT: 166

ROUTE 111

Fair

Over: ROUTE 15

ROUTE 15 EXIT NO. 48, CT

Built 2003 Load: 94.8 t ADT: 14,100

CHAMBERLAIN DRIVE

Fair

Over: MEANS BROOK

1.1 MI WEST OF ROUTE 108, CT

Built 1978 Load: 96.6 t ADT: 700

ROUTE 30

Fair

Over: I-84 & I-84 RAMP 247

.26 MI SOUTH OF ROUTE 83, CT

Built 1981 Load: 96.7 t ADT: 26,200

INTERSTATE-95

Fair

Over: PATCHOGUE RIVER

0.1 MI S OF ROUTE 153, CT

Built 1957 Load: 97.2 t ADT: 50,800

US ROUTE 6

Fair

Over: ABANDONED RAILROAD

BOLTON NOTCH, CT

Built 1951 Load: 97.2 t ADT: 35,400

GUINEA ROAD

Fair

Over: ROUTE 15

1.4 MI S OF ROUTE 104, CT

Built 1937 Load: 97.2 t ADT: 1,450

PARK AVENUE

Fair

Over: ROUTE 15

1.4 MI S OF ROUTE 111, CT

Built 1940 Load: 97.2 t ADT: 3,500

ROUTE 15

Fair

Over: ROUTE 243

1 MILE WEST OF ROUTE 63, CT

Built 1948 Load: 97.2 t ADT: 72,300

US ROUTE 44

Fair

Over: QUINEBAUG RIVER

50 FT W OF KENNEDY DRIVE, CT

Built 1925 Load: 97.2 t ADT: 10,400

ROUTE 130

Fair

Over: ASH CREEK

1.4 MI WEST OF I-95, CT

Built 1910 Load: 97.2 t ADT: 10,100

Showing 2,751-2,800 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.