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

DIBBLE HILL ROAD

Good

Over: MILL BROOK

330 FT S. OF ROUTE 128, CT

Built 1970 Load: 99.9 t ADT: 129

THRONEBROOK DRIVE

Good

Over: HIGLEY BROOK

JCT OF HIGLEY RD, CT

Built 1990 Load: 99.9 t ADT: 61

ROUTE 218

Good

Over: MEADOW BROOK

0.25 MILE WEST OF I-291, CT

Built 1993 Load: 99.9 t ADT: 36,600

SR 536

Good

Over: QUINNIPIAC RIVER

0.2 MI W OF EAST JCT 372, CT

Built 1969 Load: 99.9 t ADT: 11,300

PLANK ROAD EAST

Good

Over: BEAVER POND BROOK

175 FT W OF SCOTT ROAD, CT

Built 2018 Load: 99.9 t ADT: 2,550

ROUTE 9

Good

Over: GREAT BROOK

0.4 MI N OF ROUTE 82, CT

Built 1967 Load: 99.9 t ADT: 31,100

W STARRS PLAIN RD

Good

Over: SAUGATUCK RIVER

550 FT E OF ROUTE 7, CT

Built 2007 Load: 99.9 t ADT: 985

ROUTE 8

Good

Over: BROOK

0.5 M N OF ROUTE 127, CT

Built 1982 Load: 99.9 t ADT: 69,900

MILLER POND ROAD

Good

Over: BUCKLAND POND

150 FT N OF BUSH HILL RD, CT

Built 2005 Load: 99.9 t ADT: 215

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

KENSINGTON ROAD

Poor

Over: MATTABESSET RIVER

0.2 MI S OF ROUTE 372, CT

Built 1958 Load: 10.0 t ADT: 4,200

SR 664

Poor

Over: SNAKE MEADOW BROOK

3 MI NORTH OF ROUTE 14, CT

Built 1925 Load: 11.3 t ADT: 600

WIRE MILL ROAD

Poor

Over: HAVILAND BROOK

0.3 MI W OF ROUTE 137, CT

Built 1957 Load: 11.7 t ADT: 1,900

MOUNTAIN ROAD

Poor

Over: WATABA LAKE

0.2 MI N OF BENNETTS FARM, CT

Built 1955 Load: 12.3 t ADT: 440

EAST STREET

Poor

Over: PEQUABUCK RIVER

160 FT SOUTH OF ROUTE 72, CT

Built 1900 Load: 12.6 t ADT: 2,805

CONGRESS STREET #2

Poor

Over: MILL RIVER

0.5 MI W OF ROUTE 59, CT

Built 1935 Load: 13.0 t ADT: 6,505

ROUTE 34

Poor

Over: HOUSATONIC RIVER

1 MILE EAST OF JCT RT 111, CT

Built 1919 Load: 13.3 t ADT: 9,400

ATWOODVILLE ROAD

Poor

Over: MOUNT HOPE RIVER

.3 MI EAST OF ROUTE 89, CT

Built 1950 Load: 13.6 t ADT: 425

COUNTRY VILLAGE LA

Poor

Over: BROOK

0.2 MI EAST OF OLD NOD RD, CT

Built 1970 Load: 13.6 t ADT: 100

WOODCHUCK HILL RD

Poor

Over: LITTLE RIVER

50 FT E JCT HANOVER ROAD, CT

Built 1900 Load: 14.9 t ADT: 1,178

MICHAELS WAY

Poor

Over: W BRANCH SAUGATUCK RIVER

0.1 MILE WEST OF ROUTE 53, CT

Built 1995 Load: 15.6 t ADT: 215

BAMFORTH ROAD

Poor

Over: INTERSTATE-84

0.4 MILE SOUTH OF RTE 30, CT

Built 1978 Load: 15.9 t ADT: 2,360

ALPHA AVENUE

Poor

Over: AMTRAK RR & LOCAL ROADS

1000 FT SOUTH OF ROUTE 1A, CT

Built 1940 Load: 16.2 t ADT: 4,200

ROUTE 153 (ESSEX R

Poor

Over: INTERSTATE-95

I-95 EXIT NO. 65, CT

Built 1957 Load: 17.2 t ADT: 7,900

ROUTE 177

Poor

Over: FARMINGTON RIVER

0.2 MI S FROM ROUTE 4 JCT, CT

Built 1939 Load: 17.8 t ADT: 16,500

TAFT POND ROAD

Poor

Over: MASHAMOQUET BROOK

.5 MI NORTH OF ROUTE 97, CT

Built 1900 Load: 17.8 t ADT: 368

ROUTE 10

Poor

Over: ROUTE 322

ROUTE 10 OVER ROUTE 322, CT

Built 1936 Load: 18.5 t ADT: 4,600

SAND ROAD

Poor

Over: WEST ASPETUCK RIVER

NEAR JCT W/LONG MT RD., CT

Built 1983 Load: 18.8 t ADT: 506

US ROUTE 1 NB

Poor

Over: I-95 RAMP 310 SR 641 SB

0.1 MI N OF I-95, CT

Built 1973 Load: 19.8 t ADT: 4,500

ROUTE 207

Poor

Over: BEAVER BROOK

3 MILES EAST OF ROUTE 32, CT

Built 1938 Load: 20.1 t ADT: 2,800

JEROME AVENUE

Poor

Over: FREEMAN HILL BROOK

200 FT SOUTH COOLIDGE ST, CT

Built 1964 Load: 20.1 t ADT: 7,240

SR 536 -CROOKED ST

Poor

Over: PAN AM RAILROAD

0.2 MILE EAST OF I-84, CT

Built 1969 Load: 21.1 t ADT: 11,300

INTERSTATE 684 NB

Poor

Over: BYRAM RIVER

BETWEEN EXITS 2 & 3, CT

Built 1968 Load: 21.4 t ADT: 35,050

WAITE STREET

Poor

Over: LAKE WHITNEY

0.2 MI EAST OF MATHER ST, CT

Built 1935 Load: 21.4 t ADT: 2,000

SALEM ROAD

Poor

Over: EAST BR EIGHT MILE RIVER

0.2 MI N. OF ROUTE 156, CT

Built 1991 Load: 21.7 t ADT: 413

ROUTE 89

Poor

Over: INTERSTATE 84

0.57 MI SOUTH OF RTE 190, CT

Built 1958 Load: 22.0 t ADT: 930

WILLOW STREET

Poor

Over: WILLOW BROOK

0.1 MI EAST OF ROUTE 10, CT

Built 1924 Load: 22.7 t ADT: 488

DOWNS STREET

Poor

Over: PEQUABUCK RIVER

100 FT SOUTH OF ROUTE 72, CT

Built 1938 Load: 22.9 t ADT: 1,120

ROUTE 154

Poor

Over: BACK RIVER

0.8 MI S OF US ROUTE 1, CT

Built 1935 Load: 23.0 t ADT: 3,000

WATERSIDE LANE

Poor

Over: HAMMOCK RIVER

0.3 MI S OF US ROUTE 1, CT

Built 1994 Load: 23.4 t ADT: 510

INTERSTATE-95

Poor

Over: METRO NORTH RAILROAD

0.23 MI NORTH OF FIRST AV, CT

Built 1956 Load: 23.7 t ADT: 121,500

ROUTE 82

Poor

Over: CONNECTICUT RIVER

0.1 MILE WEST OF RTE. 149, CT

Built 1913 Load: 23.7 t ADT: 11,800

SILVER HILL ROAD

Poor

Over: ASPETUCK RIVER

50 FEET EAST OF ROUTE 58, CT

Built 1920 Load: 23.9 t ADT: 295

SR 738 (E. CENTER

Poor

Over: INTERSTATE-91

.76 MI SO OF RTE 68, CT

Built 1965 Load: 24.0 t ADT: 8,000

ROUTE 15 SB

Poor

Over: ROUTE 314 - BERLIN TNPK.

JCT OF 15 AND BERLIN TNPK, CT

Built 1942 Load: 24.6 t ADT: 18,550

Showing 4,151-4,200 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.