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

COLLEGE STREET

Fair

Over: SOUTH SERVICE DRIVE

COLLEGE ST O S SERV DR, CT

Built 2015 Load: 37.3 t ADT: 13,587

ROUTE 11 NB

Fair

Over: SR 637 (LAKE HAYWARD RD)

ROUTE 11 EXIT NO. 6, CT

Built 1972 Load: 37.4 t ADT: 4,200

OLD RIDGEFIELD RD

Fair

Over: NORWALK RIVER

WILTON CENTER, CT

Built 1955 Load: 37.4 t ADT: 392

BUNNELL STREET

Fair

Over: LOON BROOK

1 MI NORTH OF ROUTE 182A, CT

Built 2010 Load: 37.4 t ADT: 110

I-95 SB RAMP 305

Fair

Over: NORTH FRONTAGE ROAD

EXIT 27 OFF I-95 SB, CT

Built 1959 Load: 37.6 t ADT: 1,700

ROUTE 118

Fair

Over: NAUGATUCK RIVER

HARWINTON TL, CT

Built 1959 Load: 37.6 t ADT: 5,900

YALE AVENUE

Fair

Over: ROUTE 15

0.5 MI N OF ROUTE 68, CT

Built 1947 Load: 37.6 t ADT: 5,200

ROUTE 37

Fair

Over: SAWMILL BROOK

.25 MI S OF RTE 39 N JCT., CT

Built 2001 Load: 37.6 t ADT: 4,000

ROUTE 80

Fair

Over: HAMMONASSET RIVER

1.4 MI E OF ROUTE 79, CT

Built 1934 Load: 37.6 t ADT: 4,600

ROUTE 8 SOUTHBOUND

Fair

Over: BOGUE ROAD

1 MILE NORTH OF EXIT 42, CT

Built 1966 Load: 37.6 t ADT: 12,250

ROUTE 11 SB

Fair

Over: EIGHT MILE RIVER

0.6 MI N OF ROUTE 85, CT

Built 1971 Load: 37.6 t ADT: 4,700

INTERSTATE-91 SB

Fair

Over: ROUTE 9 NORTHBOUND

APROX 2 MI.N MIDDLETOWNTL, CT

Built 1965 Load: 37.6 t ADT: 48,100

ROUTE 9 SOUTHBOUND

Fair

Over: WEST BRIDGE STREET

0.2 MI N OF ROUTE 80, CT

Built 1967 Load: 37.6 t ADT: 13,900

ROUTE 9 SB RAMP16

Fair

Over: WEST BRIDGE STREET

350 FT N OF ROUTE 80, CT

Built 1967 Load: 37.6 t ADT: 1,850

ROUTE 8 RAMP 010

Fair

Over: ROUTE 8

4.2 MI N OF I-95, CT

Built 1971 Load: 37.6 t ADT: 6,000

ROUTE 25 TR 801

Fair

Over: RESERVOIR AVENUE

JCT RTE 15(25NB TO 15SB), CT

Built 1980 Load: 37.6 t ADT: 10,600

OLD COLONY ROAD

Fair

Over: STILL RIVER

200 FT SOUTH OF ROUTE 198, CT

Built 1933 Load: 37.6 t ADT: 850

SR 847 (THOMASTON

Fair

Over: NAUGATUCK RAILROAD

.6 MI NORTH OF W. MAIN ST, CT

Built 1981 Load: 37.6 t ADT: 8,000

ROUTE 15 SB

Fair

Over: ROUTE 8 & RT 8 RAMP 143

ROUTE 15 EXIT NO. 52, CT

Built 1983 Load: 37.6 t ADT: 27,500

HENDEE ROAD

Fair

Over: HOP RIVER

.29 MI EAST OF US ROUTE 6, CT

Built 1984 Load: 37.6 t ADT: 772

INTERSTATE-691 WB

Fair

Over: KNOTTER DRIVE

1.1 MI W OF ROUTE 10, CT

Built 1986 Load: 37.6 t ADT: 28,500

OLD PUMPKIN HILL R

Fair

Over: HOUSATONIC RAILROAD

50 E OF ERICKSON RD JCT, CT

Built 1991 Load: 37.6 t ADT: 670

CURTISS STREET

Fair

Over: PAN AM RAILROAD

0.1 MILE WEST OF ROUTE 69, CT

Built 1992 Load: 37.6 t ADT: 3,326

U.S. ROUTE 7

Fair

Over: TRIBUTARY BROOK/ WETLAND

1.26 MI NORTH O ROUTE 202, CT

Built 2009 Load: 37.6 t ADT: 25,100

COMMERCE STREET

Fair

Over: SR 598

0.1 MI W OF JCT I-91, CT

Built 1964 Load: 37.8 t ADT: 6,890

DISH MILL ROAD

Fair

Over: HOWELL BROOK

1.2 MI E OF COLEBROOK TL, CT

Built 2000 Load: 37.8 t ADT: 67

OLD FORGE ROAD

Fair

Over: SANDY BROOK

100 WEST OF RIVERTON RD, CT

Built 1996 Load: 37.8 t ADT: 80

ROUTE 166

Fair

Over: INTERSTATE-95

I-95 EXIT NO. 66, CT

Built 1957 Load: 37.9 t ADT: 8,500

SR 816

Fair

Over: I-84 & I-84 RAMP 026

I-84 EXIT 10, CT

Built 1962 Load: 37.9 t ADT: 11,600

BOW LANE

Fair

Over: ROUTE 9

1.9 MI SOUTH OF ROUTE 66, CT

Built 1958 Load: 37.9 t ADT: 1,000

ROUTE 31

Fair

Over: WILLIMANTIC RIVER

AT THE COVENTRY TOWN LINE, CT

Built 1947 Load: 37.9 t ADT: 4,600

ROUTE 32

Fair

Over: YANTIC RIVER

.2 MI NORTH OF ROUTE 2, CT

Built 1956 Load: 37.9 t ADT: 18,000

I-84 TR 826

Fair

Over: CONNECTICUT RIVER

EXIT 51 I-84 WB TO I-91NB, CT

Built 1964 Load: 37.9 t ADT: 14,700

INTERSTATE-84 WB

Fair

Over: MARION AVENUE

INTERSTATE-84 EXIT NO. 30, CT

Built 1963 Load: 37.9 t ADT: 45,200

INTERSTATE-95 SB

Fair

Over: ROUTE 117

2.2 MI N OF ROUTE 12, CT

Built 1964 Load: 37.9 t ADT: 30,500

INTERSTATE-395 NB

Fair

Over: BALLARD ROAD

1 MILE NORTH OF ROUTE 44, CT

Built 1965 Load: 37.9 t ADT: 12,000

INTERSTATE-91 NB

Fair

Over: AMTRAK RAILROAD

.65 MI N OF ROUTE 22, CT

Built 1965 Load: 37.9 t ADT: 43,200

INTERSTATE-84 EB

Fair

Over: BROAD ST I-84 RAMP 191

1.17 MI S OF JCT US 44 WB, CT

Built 1966 Load: 37.9 t ADT: 70,800

CEDAR STREET NO. 1

Fair

Over: METRO NORTH RAILROAD

0.3 MI S OF US ROUTE 1, CT

Built 1906 Load: 37.9 t ADT: 3,092

STEVENS STREET

Fair

Over: COPPER MINE BROOK

0.2 MI EAST OF JEROME AVE, CT

Built 1975 Load: 37.9 t ADT: 5,952

SOUNDVIEW AVENUE

Fair

Over: CUMMINGS BROOK

NEXT TO TUPPER DRIVE, CT

Built 1933 Load: 37.9 t ADT: 1,220

CAMPBELL ROAD

Fair

Over: SANDY BROOK

JCT CAMPBELL & SANDYBROOK, CT

Built 2015 Load: 37.9 t ADT: 100

DOBSON ROAD

Fair

Over: INTERSTATE-84 & RAMP 016

.56 MI EAST OF RT 30 & 83, CT

Built 1981 Load: 37.9 t ADT: 5,356

US ROUTE 5-KING ST

Fair

Over: INTERSTATE-91

1.2 MI N OF E WINDSOR TL, CT

Built 1959 Load: 38.0 t ADT: 13,800

SR 806 (NEWTOWN RD

Fair

Over: STILL RIVER

1.4 MI W OF ROUTE 6, CT

Built 1928 Load: 38.0 t ADT: 16,800

ROUTE 2 EASTBOUND

Fair

Over: JEREMY RIVER

0.4 MI E OF ROUTE 149, CT

Built 1968 Load: 38.0 t ADT: 16,200

BELDEN ROAD #2

Fair

Over: BURLINGTON BROOK

0.9 MILE NORTH OF ROUTE 4, CT

Built 1956 Load: 38.0 t ADT: 268

INTERSTATE-395 SB

Fair

Over: US ROUTE 6

2 MI NORTH OF SR 695, CT

Built 1963 Load: 38.1 t ADT: 12,900

ROUTE 9 SOUTHBOUND

Fair

Over: WEBSTER SQUARE ROAD

0.4 MI LOG DIR. NO. RTE 5, CT

Built 1962 Load: 38.1 t ADT: 38,900

INTERSTATE 84 EB

Fair

Over: ROUTE 188

EXIT 16 FROM I-84, CT

Built 1964 Load: 38.1 t ADT: 36,100

Showing 1,351-1,400 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.