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 RAMP 145

Fair

Over: ROUTE 15 SOUTHBOUND

0.8 MI S OF I-91, CT

Built 1964 Load: 43.4 t ADT: 2,700

SR 908 COLMAN ST

Fair

Over: I-95 SR 623 & N SR 624

0.6 MI N OF ROUTE 85, CT

Built 1973 Load: 43.4 t ADT: 10,300

INTERSTATE-91 SB

Fair

Over: MATTABESSET RIVER

0.1 MI S OF ROUTE 372, CT

Built 1965 Load: 43.4 t ADT: 53,400

INTERSTATE-91 SB

Fair

Over: CSX RAILROAD

2.3 MI N OF ROUTE 17, CT

Built 1965 Load: 43.4 t ADT: 54,700

I-84 RAMP 114

Fair

Over: AETNA PARKING LOT

EB RAMP FROM SIGOURNEY ST, CT

Built 1965 Load: 43.4 t ADT: 8,000

WHITING STREET

Fair

Over: ROUTE 9 & ROUTE 9 RAMP

RTE 72 TO RTE 9SB 4TH BR, CT

Built 1976 Load: 43.4 t ADT: 4,100

MOUNTAIN SPRING RD

Fair

Over: INTERSTATE-84

1.24 MI E OF I84 JCT RT31, CT

Built 1979 Load: 43.4 t ADT: 540

ROUTE 25 NB

Fair

Over: PEQUONNOCK RIVER

0.7 MI S OF ROUTE 111, CT

Built 1979 Load: 43.4 t ADT: 19,300

MIDDLEFIELD STREET

Fair

Over: COGINCHAUG RIVER

0.1 MI. W OF ROUTE 157, CT

Built 1900 Load: 43.4 t ADT: 1,622

WALNUT HILL RD #2

Fair

Over: NORTHFIELD BROOK

200 EAST OF ROUTE 254, CT

Built 1946 Load: 43.4 t ADT: 30

INTERSTATE-91 NB

Fair

Over: CAPEN STREET

0.6 MILE MORTH OF RTE 178, CT

Built 1990 Load: 43.4 t ADT: 74,450

ROUTE 207

Fair

Over: CABIN BROOK

2 MILES EAST OF HEBRON TL, CT

Built 1935 Load: 43.5 t ADT: 2,100

INTERSTATE-84 EB

Fair

Over: I-84 WB EXIT 42 OFF RAMP

0.8 MILE EAST OF EXIT 41, CT

Built 1965 Load: 43.5 t ADT: 60,000

INTERSTATE-91 NB

Fair

Over: US ROUTE 5

I-91 EXIT NO. 12, CT

Built 1965 Load: 43.5 t ADT: 43,200

INTERSTATE-91 NB

Fair

Over: INTERSTATE-91 TR 807

1 MI SOUTH OF ROUTE 150, CT

Built 1965 Load: 43.5 t ADT: 32,200

INTERSTATE 84 EAST

Fair

Over: US RTE 6 EB & SR 531 WB

AT EXIT 38, CT

Built 1969 Load: 43.5 t ADT: 42,000

I-91 SB & I-91 TR

Fair

Over: CONNECTICUT SOUTHERN RR

I-91 SB EXIT 29A, CT

Built 1958 Load: 43.5 t ADT: 39,700

RIVER ROAD

Fair

Over: CHOATE BROOK

0.5 MI N/OLD JEWETT CITY, CT

Built 1939 Load: 43.5 t ADT: 700

CEDAR LANE

Fair

Over: BAKERSVILLE BROOK

AT JCT OF CEDAR & RT 202, CT

Built 1999 Load: 43.5 t ADT: 1,462

OLD CREAMERY ROAD

Fair

Over: STILL RIVER

200 EAST OF OLD FORGE RD, CT

Built 1930 Load: 43.5 t ADT: 338

SHIPYARD ROAD

Fair

Over: MINE BROOK

0.3 MI S OF ROUTE 151, CT

Built 1941 Load: 43.5 t ADT: 42

ROUTE 166

Fair

Over: AMTRAK RAILROAD

0.2 MI WEST OF US ROUTE 1, CT

Built 1933 Load: 43.5 t ADT: 12,500

YORK STREET

Fair

Over: WEST RIVER

50 FT E OF US ROUTE 1, CT

Built 1993 Load: 43.5 t ADT: 262

ENTRANCE TO MALL

Fair

Over: UNNAMED STREAM

MASHANTUCKET PEQUOT RESER, CT

Built 2006 Load: 43.5 t ADT: 1,000

JUDE LANE

Fair

Over: INTERSTATE-84

0.4 MI W OF I-84 EXIT 31, CT

Built 1963 Load: 43.6 t ADT: 5,700

INTERSTATE-91

Fair

Over: INTERSTATE-91 TR 827

0.6 MI N WETHERSFIELD TL, CT

Built 1964 Load: 43.6 t ADT: 106,600

INTERSTATE-95

Fair

Over: HARVARD AVENUE

.2 MI E OF GR STAMFORD TL, CT

Built 1958 Load: 43.7 t ADT: 107,900

INTERSTATE-95

Fair

Over: US ROUTE 1

JCT OF US ROUTE 1 EXIT 11, CT

Built 1958 Load: 43.7 t ADT: 120,300

INTERSTATE-95

Fair

Over: SCHOOL HOUSE ROAD

INTERSTATE-95 EXIT NO. 35, CT

Built 1957 Load: 43.7 t ADT: 89,900

INTERSTATE-95

Fair

Over: SR 718

1.3 MI N OF ROUTE 77, CT

Built 1958 Load: 43.7 t ADT: 52,000

ROUTE 2

Fair

Over: INTERSTATE-395

AT JCT OF INTERSTATE-395, CT

Built 1959 Load: 43.7 t ADT: 34,500

NORMAN ROAD

Fair

Over: INTERSTATE-395

1 MILE NORTH OF ROUTE 164, CT

Built 1958 Load: 43.7 t ADT: 1,193

ROUTE 124

Fair

Over: RIPPOWAM RIVER

0.6 MI FROM NEW YORK S L, CT

Built 1957 Load: 43.7 t ADT: 4,100

ROUTE 63

Fair

Over: HOLLENBECK RIVER

04 MI S OF RTE 43 JCT, CT

Built 1950 Load: 43.7 t ADT: 2,900

INTERSTATE-84 EB

Fair

Over: ROUTE 70

2.4 MI W OF I-691, CT

Built 1961 Load: 43.7 t ADT: 45,100

ROUTE 9 NORTHBOUND

Fair

Over: ROUTE 372

0.15 MI W OF US ROUTE 5, CT

Built 1962 Load: 43.7 t ADT: 26,600

ROUTE 263

Fair

Over: MAD RIVER

JUNCTION OF RTS 44 + 263, CT

Built 1957 Load: 43.7 t ADT: 2,600

INTERSTATE-91 SB

Fair

Over: US 5 & AMTRAK & FERRY ST

1.0 MI S OF ROUTE 17, CT

Built 1964 Load: 43.7 t ADT: 58,300

INTERSTATE-395 NB

Fair

Over: US ROUTE 44 (SCHOOL ST.)

AT THE JCT OF US ROUTE 44, CT

Built 1965 Load: 43.7 t ADT: 10,500

ROUTE 9 SOUTHBOUND

Fair

Over: CEDAR GROVE TERRACE

1.0 MI S OF ROUTE 153, CT

Built 1966 Load: 43.7 t ADT: 17,500

ATTAWAUGAN CR ROAD

Fair

Over: INTERSTATE-395 NB

2 MI NORTH OF ROUTE 101, CT

Built 1967 Load: 43.7 t ADT: 8,800

US RTE 7 RAMP 005

Fair

Over: US ROUTE 1

1.2 MILES NORTH OF I-95, CT

Built 1970 Load: 43.7 t ADT: 3,600

U.S. ROUTE 7 SB

Fair

Over: ROUTE 123

1.8 MILES NORTH OF I-95, CT

Built 1970 Load: 43.7 t ADT: 18,100

SOUTH RIVER RD #2

Fair

Over: WILLIMANTIC RIVER

1.3 MI EAST OF RT 195, CT

Built 1950 Load: 43.7 t ADT: 629

FRANKLIN DRIVE

Fair

Over: E BRANCH NAUGATUCK RIVER

0.2 MI SO. OF FRANKLIN ST, CT

Built 1961 Load: 43.7 t ADT: 3,120

SR 847

Fair

Over: HANCOCK BROOK

3.1 MILES NORTH OF I-84, CT

Built 1934 Load: 43.7 t ADT: 10,200

ROUTE 32

Fair

Over: STONY BROOK

1.2 MI NORTH OF ROUTE 163, CT

Built 1927 Load: 43.7 t ADT: 7,700

EDUCATIONAL WAY

Fair

Over: COVE RIVER

260 FT E OF SR 705, CT

Built 1999 Load: 43.7 t ADT: 858

ROUTE 171

Fair

Over: PROV & WORC RAILROAD

600 WEST OF JCT ROUTE 12, CT

Built 1957 Load: 43.8 t ADT: 9,800

VALLEY ROAD

Fair

Over: MIANUS RIVER

O/ MIANUS RIVER, CT

Built 1929 Load: 43.8 t ADT: 1,920

Showing 1,801-1,850 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.