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 8SB OFF RAMP

Fair

Over: NORTH WASHINGTON AVENUE

0.1 MI S OF EXIT 3, CT

Built 1969 Load: 31.9 t ADT: 8,900

ROUTE 15

Fair

Over: PERRY AVENUE

0.2 MI S OF US ROUTE 7, CT

Built 1936 Load: 32.1 t ADT: 65,320

ROUTE 15

Fair

Over: MILLER AVENUE

.8 MI N WALFRD & MERDN TL, CT

Built 1946 Load: 32.1 t ADT: 71,100

ROUTE 195

Fair

Over: INTERSTATE 84

AT INTERSTATE 84 EXIT 68, CT

Built 1956 Load: 32.1 t ADT: 14,500

ROUTE 20

Fair

Over: WEST BRANCH SALMON BROOK

0.4 MI WEST OF ROUTE 219, CT

Built 1934 Load: 32.1 t ADT: 1,900

ROUTE 47

Fair

Over: BEE BROOK

150 FT SOUTH OF ROUTE 202, CT

Built 1959 Load: 32.1 t ADT: 1,700

MADISON AVENUE

Fair

Over: INTERSTATE 84

0.2 MI WEST OF ROUTE 37, CT

Built 1962 Load: 32.1 t ADT: 1,583

ROUTE 108

Fair

Over: FARMILL RIVER

3.4 MI N. OF ROUTE 15, CT

Built 1932 Load: 32.1 t ADT: 3,000

U.S. ROUTE 1

Fair

Over: ROOSTER RIVER

0.5 MI W OF ROUTE 59, CT

Built 1963 Load: 32.1 t ADT: 12,200

INTERSTATE-95 SOUT

Fair

Over: GROTON RESERVOIR

1.2 MI N OF ROUTE 112, CT

Built 1964 Load: 32.1 t ADT: 30,500

ROUTE 349

Fair

Over: POQUONNOCK ROAD

1.0 MI S OF US ROUTE 1, CT

Built 1966 Load: 32.1 t ADT: 10,700

ROUTE 2A

Fair

Over: MASSAPEAG SIDE RD

1.5 MI E OF I-395, CT

Built 1967 Load: 32.1 t ADT: 27,000

COLES ROAD

Fair

Over: ROUTE 9 SB & RAMP

0.9 MILE NORTH OF ROUTE 3, CT

Built 1967 Load: 32.1 t ADT: 3,200

SR 625

Fair

Over: AMTRAK RAILROAD

0.2 MI N OF US ROUTE 1, CT

Built 1890 Load: 32.1 t ADT: 3,700

RIVER ROAD

Fair

Over: BLACKLEDGE RIVER

1.3 MI W OF ROUTE 149, CT

Built 1975 Load: 32.1 t ADT: 357

ROUTE 22

Fair

Over: MUDDY RIVER

1.8 MI W OF ROUTE 17, CT

Built 1947 Load: 32.1 t ADT: 10,800

DUCK POND ROAD

Fair

Over: BUTTERNUT BROOK

NORTH OF BRUSH HILL ROAD, CT

Built 1992 Load: 32.1 t ADT: 66

COLLEGE STREET

Fair

Over: NORTH SERVICE DRIVE

COLLEGE ST OVER N SERV DR, CT

Built 2015 Load: 32.1 t ADT: 13,587

ROUTE 127

Fair

Over: ROUTE 8

1.7 MI S OF ROUTE 15, CT

Built 1972 Load: 32.2 t ADT: 11,600

INTERSTATE-95

Fair

Over: WEST BROAD STREET

INTERSTATE-95 EXIT NO. 32, CT

Built 1958 Load: 32.4 t ADT: 91,400

HORSEPOND ROAD

Fair

Over: INTERSTATE-95

0.9 MI N OF ROUTE 79, CT

Built 1957 Load: 32.4 t ADT: 1,045

INTERSTATE-395

Fair

Over: ROODE ROAD

1.5 MI NORTH OF ROUTE 201, CT

Built 1958 Load: 32.4 t ADT: 30,000

ROUTE 322

Fair

Over: INTERSTATE-84 & RAMPS

EXIT 28 OFF I-84, CT

Built 1963 Load: 32.4 t ADT: 12,700

ROUTE 8

Fair

Over: SR 709 SOUTH MAIN STREET

AT EXIT 26 ROUTE 8 SB., CT

Built 1960 Load: 32.4 t ADT: 42,700

ROUTE 15

Fair

Over: MATTABESSET RIVER

.3 MI S OF JCT ROUTE 160, CT

Built 1926 Load: 32.4 t ADT: 25,100

SSR 453

Fair

Over: MILL RIVER

0.1 MI E OF ROUTE 10, CT

Built 1936 Load: 32.4 t ADT: 5,900

SR 614

Fair

Over: INTERSTATE-95

1.2 MI S OF ROUTE 27, CT

Built 1964 Load: 32.4 t ADT: 9,000

INTERSTATE-95 SB

Fair

Over: ROUTE 216

2.7 MI N OF ROUTE 49, CT

Built 1964 Load: 32.4 t ADT: 14,100

INTERSTATE-691 WB

Fair

Over: INTERSTATE-91

500 EAST EXIT 10-691 WB., CT

Built 1965 Load: 32.4 t ADT: 15,200

US ROUTE 1

Fair

Over: STREAM

0.9 MI N OF US ROUTE 1A, CT

Built 1939 Load: 32.4 t ADT: 5,700

ROUTE 322

Fair

Over: INTERSTATE-691

INTERSTATE-691 EXIT NO. 4, CT

Built 1971 Load: 32.4 t ADT: 9,700

INTERSTATE-91 SB

Fair

Over: EVERGREEN ROAD

.69 MI SO OF RTE 9 O-PASS, CT

Built 1965 Load: 32.4 t ADT: 58,900

ROUTE 8 SOUTHBOUND

Fair

Over: WEST MAIN STREET #1

0.4 MILE NORTH OF I-84 WB, CT

Built 1965 Load: 32.4 t ADT: 37,400

MILL HILL ROAD

Fair

Over: ROUTE 2

1.3 MI W OF ROUTE 16, CT

Built 1967 Load: 32.4 t ADT: 3,856

I-95 SB TR 803

Fair

Over: WEST AVENUE

I-95 SB EXIT NO. 15, CT

Built 1970 Load: 32.4 t ADT: 14,600

SR 790 (SOUTH STAT

Fair

Over: RIPPOWAM RIVER

NEAR EXIT 7 I-95 NB, CT

Built 1847 Load: 32.4 t ADT: 9,600

ROUTE 10

Fair

Over: METRO NORTH RAILROAD

.2 MI N OF EXIT I-95 SB, CT

Built 1977 Load: 32.4 t ADT: 16,900

ROUTE 25 SB TR 802

Fair

Over: ROUTE 25

0.2 MI S OF ROUTE 15, CT

Built 1980 Load: 32.4 t ADT: 7,400

EAST STREET

Fair

Over: EAST BRANCH SALMON BROOK

1100 EAST OF ROUTE 189, CT

Built 1937 Load: 32.4 t ADT: 2,630

INTERSTATE-691 WB

Fair

Over: I-84 TR 834 EXIT 28 RAMP

EXIT 27 INTERSTATE-84, CT

Built 1987 Load: 32.4 t ADT: 16,300

SAWMILL ROAD

Fair

Over: SAWMILL BROOK

0.15 MI S OF ROUTE 37 INT, CT

Built 1936 Load: 32.4 t ADT: 631

ROUTE 20

Fair

Over: VALLEY BROOK

3.2 MILES WEST OF RTE 179, CT

Built 1990 Load: 32.4 t ADT: 450

RTE I95

Fair

Over: FOX ISLAND ROAD BYRAM R

I95 AT N Y STATE LINE, CT

Built 1956 Load: 32.7 t ADT: 58,294

U.S. ROUTE 1

Fair

Over: FIVE MILE RIVER

200 FT NORTH OF DARIEN TL, CT

Built 1850 Load: 32.7 t ADT: 21,900

US ROUTE 1

Fair

Over: HOUSATONIC RIVER

AT STRATFORD TOWN LINE, CT

Built 1921 Load: 32.7 t ADT: 16,500

US ROUTE 1

Fair

Over: NECK RIVER

1.6 MI S OF ROUTE 79, CT

Built 1914 Load: 32.7 t ADT: 10,100

ROUTE 2 EASTBOUND

Fair

Over: SR 608 NWCH/CLCHST

.67 MI WEST OF NORWICH TL, CT

Built 1961 Load: 32.7 t ADT: 13,700

US ROUTE 5

Fair

Over: HARBOR BROOK

0.3 MI N OF I-691, CT

Built 1892 Load: 32.7 t ADT: 16,744

INTERSTATE-395 NB

Fair

Over: US ROUTE 6

2 MI NORTH OF SR 695, CT

Built 1963 Load: 32.7 t ADT: 129,000

US ROUTE 7

Fair

Over: NORWALK RIVER

0.3MI SO RT102 RIDGEFIELD, CT

Built 1928 Load: 32.7 t ADT: 18,800

Showing 601-650 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.