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 (8)

861 914 267 893 442 471 309 208

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

HUMPHREY STREET

Poor

Over: MILL RIVER

0.1 MI E OF I-91, CT

Built 1908 Load: 40.2 t ADT: 4,100

WALL STREET

Poor

Over: E BRANCH NAUGATUCK RIVER

NEXT TO O&G INDUSTRIES, CT

Built 1961 Load: 40.8 t ADT: 2,520

BOSWORTH ROAD

Poor

Over: MASHAMOQUET BROOK

800 NORTH OF ROUTE 101, CT

Built 1950 Load: 40.9 t ADT: 18

SR 745 KIMBERLY AV

Poor

Over: WEST RIVER

0.2 MI W OF I-95, CT

Built 1969 Load: 41.1 t ADT: 16,000

ROUTE 337

Poor

Over: MORRIS CREEK

2.8 MI S. OF US ROUTE 1, CT

Built 1936 Load: 41.4 t ADT: 2,600

US RTE 1 W BROAD S

Poor

Over: PAWCATUCK RIVER

CT AND RI BORDER, CT

Built 1932 Load: 41.6 t ADT: 16,400

ROUTE 40 SB

Poor

Over: AMTRAK RAILROAD

0.5 MILES N OF I-91, CT

Built 1971 Load: 41.7 t ADT: 23,200

EAST ALBERT STREET

Poor

Over: NAUGATUCK RIVER

850 FEET EAST OF MAIN ST., CT

Built 1959 Load: 41.7 t ADT: 9,350

BRIDGE STREET

Poor

Over: MAD RIVER

INTERSECTION OF ROUTE 44, CT

Built 1956 Load: 41.8 t ADT: 5,410

VAN CAR ROAD

Poor

Over: EAST ASPETUCK RIVER

1 MILE WEST OF ROUTE 202, CT

Built 1957 Load: 41.9 t ADT: 890

I-91 TR 839

Poor

Over: I-91-153 I-84-825 US44EB

I-91 SB EXIT 31, CT

Built 1961 Load: 42.3 t ADT: 1,200

US ROUTE 1

Poor

Over: WEST RIVER

0.1 MI S OF ROUTE 10, CT

Built 1950 Load: 42.8 t ADT: 20,500

CLAPBOARD HILL RD

Poor

Over: EAST RIVER

.1 MI E OF EAST RIVER RD, CT

Built 1950 Load: 42.8 t ADT: 3,000

CASE AVENUE

Poor

Over: MAD RIVER

AT THE INTERSECTION-RT 44, CT

Built 1956 Load: 42.8 t ADT: 1,995

ROUTE 2

Poor

Over: HOCKANUM RIVER

.4 MILE EAST OF PITKIN ST, CT

Built 1962 Load: 43.1 t ADT: 74,600

I-84 830 SR500-805

Poor

Over: I-84 EB & SR 500

.4 MI S INT GOV ST U/236, CT

Built 1964 Load: 43.1 t ADT: 10,500

MILLS LANE #1

Poor

Over: WASH BROOK

400 EAST OF ROUTE 189, CT

Built 1974 Load: 43.1 t ADT: 1,440

NEW ROCK HILL ROAD

Poor

Over: INTERSTATE-91

1.77 SOUTH OF ROUTE 68, CT

Built 1965 Load: 43.4 t ADT: 950

VALLEY ROAD

Poor

Over: ASPETUCK RIVER

0.6 MI E OF ROUTE 58, CT

Built 1955 Load: 43.4 t ADT: 440

PROSPECT HILL ROAD

Poor

Over: ROUTE 2

1.0 MI E OF ROUTE 149, CT

Built 1959 Load: 44.4 t ADT: 162

FLANDERS ROAD

Poor

Over: WILLIMANTIC RIVER

AT MANSFIELD TOWN LINE, CT

Built 1914 Load: 44.7 t ADT: 800

RIVER ROAD #1

Poor

Over: SUMNER BROOK

75 FEET EAST OF ROUTE 9, CT

Built 1920 Load: 45.0 t ADT: 2,836

ROUTE 2 EASTBOUND

Poor

Over: ROUTE 85

0.7 MI E OF ROUTE 16, CT

Built 1966 Load: 45.2 t ADT: 11,200

LAWLER LANE

Poor

Over: INTERSTATE-395

.8 MILE SOUTH OF ROUTE 97, CT

Built 1958 Load: 45.4 t ADT: 1,170

I-84 TR 810

Poor

Over: ROUTE 8 NB & RAMP 128

ROUTE 84 WB EXIT 20, CT

Built 1967 Load: 46.3 t ADT: 15,700

NEW LONDON TPKE

Poor

Over: YANTIC RIVER

.1 MILE SOUTH OF SR 642, CT

Built 1963 Load: 46.3 t ADT: 9,300

COTTON BRIDGE ST

Poor

Over: QUINEBAUG RIVER

1850 FROM JCT LAKE ROAD, CT

Built 1956 Load: 46.3 t ADT: 148

WEST BROAD STREET

Poor

Over: RIPPOWAM RIVER

0.2 MI W OF ROUTE 137, CT

Built 1954 Load: 46.6 t ADT: 14,220

US ROUTE 202

Poor

Over: SHEPAUG RIVER

100 EAST OF JCT RTE 341, CT

Built 1957 Load: 47.0 t ADT: 4,800

WALLENS STREET

Poor

Over: STILL RIVER

INTERSECTION OF ROUTE 8, CT

Built 1955 Load: 47.2 t ADT: 1,825

EAGLE STREET

Poor

Over: NAUGATUCK RIVER

JCT OF EAGLE ST & SR 847, CT

Built 1956 Load: 47.3 t ADT: 3,007

RIVER PLACE

Poor

Over: BLACKBERRY RIVER

NEAR INT. OF US RTE 44, CT

Built 1957 Load: 47.6 t ADT: 100

INTERSTATE-95

Poor

Over: MILL PLAIN ROAD

INTERSTATE-95 EXIT NO 21, CT

Built 1958 Load: 48.0 t ADT: 115,000

ROUTE 8 SOUTHBOUND

Poor

Over: REYNOLDS BRIDGE ROAD

0.1 MI NORTH WATERTOWN TL, CT

Built 1964 Load: 48.0 t ADT: 17,000

GAGER HILL ROAD

Poor

Over: MERRICK BROOK

1500 FT WEST OF ROUTE 97, CT

Built 1936 Load: 48.1 t ADT: 357

NEWFIELD ROAD

Poor

Over: E BR NAUGATUCK RIVER

2 MI NORTH OF ROUTE 8, CT

Built 1957 Load: 49.0 t ADT: 1,770

MEADOW STREET

Poor

Over: MAD RIVER

JCT ROUTE 44 & MEADOW ST., CT

Built 1956 Load: 49.0 t ADT: 2,955

ROUTE 4

Poor

Over: GUINEA BROOK

JCT. OF EAST ST., CT

Built 1933 Load: 50.1 t ADT: 2,200

FRANKLIN STREET

Poor

Over: E BR NAUGATUCK RIVER

APPRX 750SOUTH OF US 202, CT

Built 1958 Load: 51.7 t ADT: 2,780

WHITE STREET

Poor

Over: STILL RIVER

50 EAST OF ROUTE 8, CT

Built 1956 Load: 52.6 t ADT: 406

INDUSTRIAL PARK RO

Poor

Over: GAGES BROOK

0.2 MILE SOUTH OF RTE 30, CT

Built 1980 Load: 53.5 t ADT: 105

INDUSTRIAL PARK RO

Poor

Over: GAGES BROOK

0.24 MILES SOUTH OF RT 30, CT

Built 1980 Load: 53.5 t ADT: 535

NORTHFORD ROAD

Poor

Over: MUDDY RIVER

0.5 MI S OF I-91, CT

Built 1938 Load: 55.1 t ADT: 2,861

FORT PATH ROAD

Poor

Over: AMTRAK RAILROAD

0.3 MI SOUTH OF I-95, CT

Built 1910 Load: 56.5 t ADT: 535

I-84 RAMP 197

Poor

Over: RAMP 202 MEADOW STREET

EXIT 21 I-84 EB RAMP, CT

Built 1967 Load: 57.1 t ADT: 2,800

PLYMOUTH STREET

Poor

Over: DECKERS BROOK

.6 MILES S OF JCT SR 178, CT

Built 1955 Load: 58.0 t ADT: 212

AXE FACTORY RD #2

Poor

Over: BIGELOW BROOK

AT EASTFORD TOWN LINE, CT

Built 1975 Load: 59.6 t ADT: 30

ROUTE 9

Poor

Over: P&W RAILROAD & UNION ST

0.2 MI N OF ROUTE 17, CT

Built 1950 Load: 59.8 t ADT: 59,600

ROUTE 32 NB

Poor

Over: I-95 US 1 NB SR 623&641

1.6 MI N OF ROUTE 85, CT

Built 1974 Load: 60.9 t ADT: 3,000

FLOYDVILLE ROAD

Poor

Over: SALMON BROOK

200 FT WEST OF ROUTE 189, CT

Built 1947 Load: 62.7 t ADT: 6,968

Showing 4,301-4,350 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.