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 40 SB

Fair

Over: SOUTH NEW ROAD

0.2 MI S OF ROUTE 10, CT

Built 1976 Load: 36.6 t ADT: 11,700

NEW LONDON TPKE

Fair

Over: TRADING COVE BROOK

0.2 MI N OF ROUTE 32, CT

Built 1965 Load: 36.6 t ADT: 9,964

STONY HILL ROAD

Fair

Over: HOUSATONIC RR

0.5 MI SO JCT GRAYS BR RD, CT

Built 1936 Load: 36.6 t ADT: 5,000

ROUTE 25 NB

Fair

Over: WHITNEY AVENUE

1.0 MI S OF ROUTE 111, CT

Built 1980 Load: 36.6 t ADT: 18,900

PARKWOOD ROAD

Fair

Over: LITTLE RIVER-HANOVER RES

1000 EAST OF MAIN STREET, CT

Built 1929 Load: 36.6 t ADT: 265

ST. PETERS LANE

Fair

Over: CANDLEWOOD HILL BROOK

75 S OF CANDLEWOOD RD, CT

Built 1963 Load: 36.6 t ADT: 816

ROUTE 32

Fair

Over: OXOBOXO BROOK

100 FT N OF ROUTE 163, CT

Built 1927 Load: 36.6 t ADT: 7,500

BRIDGE STREET

Fair

Over: DEEP RIVER

100 FT W OF ROUTE 154, CT

Built 1990 Load: 36.6 t ADT: 1,276

ROUTE 100

Fair

Over: US ROUTE 1 & AMTRAK RR

0.1 MILE SOUTH OF I-95, CT

Built 1992 Load: 36.6 t ADT: 19,400

INTERSTATE 684 SB

Fair

Over: TAMARACK SWAMP

.46 MI NORTH OF N.Y. S.L., CT

Built 1968 Load: 36.7 t ADT: 35,050

NAUGATUCK AVENUE

Fair

Over: METRO NORTH RAILROAD

0.2 MILE NORTH OF I95, CT

Built 1913 Load: 36.8 t ADT: 3,790

INTERSTATE-95

Fair

Over: MILL RIVER

EXIT 20, CT

Built 1958 Load: 36.9 t ADT: 115,800

SQUAW ROCK ROAD

Fair

Over: SR 695

0.2 MI E OF I- 395, CT

Built 1958 Load: 36.9 t ADT: 335

ROUTE 20 WESTBOUND

Fair

Over: SSR 401

AT WINDSOR LOCKS TOWNLINE, CT

Built 1961 Load: 36.9 t ADT: 17,000

ROUTE 9 SOUTHBOUND

Fair

Over: AMTRAK RAILROAD

1.25 MI S ELLIS ST O/PASS, CT

Built 1962 Load: 36.9 t ADT: 46,500

ROUTE 179

Fair

Over: FARMINGTON RIVER

AT COLLINSVILLE DAM, CT

Built 1959 Load: 36.9 t ADT: 9,800

ROUTE 213

Fair

Over: AMTRAK RAILROAD

0.4 MI S OF ROUTE 156, CT

Built 1960 Load: 36.9 t ADT: 4,400

ROUTE 219

Fair

Over: MOUNTAIN BROOK

1.98 MI SO BARKHAMSTED TL, CT

Built 1959 Load: 36.9 t ADT: 7,200

ROUTE 173

Fair

Over: INTERSTATE-84

0.2 MILE NORTH OF RTE. 71, CT

Built 1965 Load: 36.9 t ADT: 16,800

INTERSTATE-95 NB

Fair

Over: MYSTIC RES&DEANS MILL RD

1.5 MI N OF ROUTE 27, CT

Built 1964 Load: 36.9 t ADT: 22,400

ROUTE 72

Fair

Over: POLAND RIVER

1.9 MILE NORTH OF ROUTE 6, CT

Built 1927 Load: 36.9 t ADT: 2,000

ROUTE 8 NORTHBOUND

Fair

Over: NAUGATUCK RV-LOCAL ROADS

.27 MI NORTH OF TOWN LINE, CT

Built 1966 Load: 36.9 t ADT: 27,300

BLAKESLEE STREET

Fair

Over: PAN AM RAILROAD

0.1 MI NORTH OF ROUTE 72, CT

Built 1937 Load: 36.9 t ADT: 4,800

BURNELL BLVD

Fair

Over: METRO-NORTH & NORWALK RV

0.1 MILE WEST OF MAIN ST., CT

Built 1965 Load: 36.9 t ADT: 4,909

ROUTE 8 SOUTHBOUND

Fair

Over: MNRR NAUGTCK RV

RTE 8 EXIT 24, CT

Built 1981 Load: 36.9 t ADT: 22,900

BEECH HILL ROAD

Fair

Over: SANDY BROOK

20 E OF SANDY BROOK ROAD, CT

Built 2000 Load: 36.9 t ADT: 397

ROUTE 319

Fair

Over: FURNACE BROOK

.3 MI WEST OF ROUTE 19, CT

Built 1929 Load: 36.9 t ADT: 2,800

ROUTE 68

Fair

Over: P&W RR

1.6 MI E OF I-91, CT

Built 1967 Load: 37.0 t ADT: 13,200

ROUTE 9 SOUTHBOUND

Fair

Over: BUSWAY - CT FASTRAK

.25 MI. NO. OF EXIT 28 A, CT

Built 1976 Load: 37.0 t ADT: 33,200

WEST CENTER STREET

Fair

Over: QUINNIPIAC RIVER

0.4 MI W OF ROUTE 10, CT

Built 2000 Load: 37.0 t ADT: 4,600

ROUTE 190

Fair

Over: SCANTIC RIVER

0.5 MILE EAST OF RTE. 186, CT

Built 1968 Load: 37.1 t ADT: 12,200

INTERSTATE 84 WB

Fair

Over: ROUTE 63

1 MI S OF INT 63 & 64, CT

Built 1964 Load: 37.2 t ADT: 31,500

ROUTE 118

Fair

Over: BANTAM RIVER

.5 MILES EAST OF ROUTE 63, CT

Built 1960 Load: 37.2 t ADT: 5,500

ROUTE 15 NB

Fair

Over: INTERSTATE-91 & TR 3

ADJ TO EXIT#68 TO I691 WB, CT

Built 1964 Load: 37.2 t ADT: 30,800

INTERSTATE-84 EB

Fair

Over: OLIVE STREET (ABANDONED)

AT EXIT 45, CT

Built 1967 Load: 37.2 t ADT: 58,800

ROUTE 354

Fair

Over: ROUTE 2

ROUTE 2 WB EXIT NO. 20, CT

Built 1966 Load: 37.2 t ADT: 3,900

US ROUTE 44

Fair

Over: ROUTE 8 NORTHBOUND

0.6 MI W BARKHAMSTED TL, CT

Built 1970 Load: 37.2 t ADT: 16,000

MAPLE STREET

Fair

Over: NAUGATUCK RIVER

OFF EXIT 27 ROUTE 8 SB, CT

Built 1912 Load: 37.2 t ADT: 13,000

PARMALEE HILL ROAD

Fair

Over: HOUSATONIC RR

PARMALEE HLL RD O/RR, CT

Built 1989 Load: 37.2 t ADT: 300

ROUTE 15 SOUTHBOUN

Fair

Over: I-91 NB RT 2 CT RIVER RR

0.3 MI NORTH OF I-91 NB, CT

Built 1991 Load: 37.2 t ADT: 41,350

INTERSTATE 84 WB

Fair

Over: STILL RIVER

500 EAST OF EXIT 7, CT

Built 1962 Load: 37.3 t ADT: 33,100

INTERSTATE 84 EB

Fair

Over: STILL RIVER

I-84 EB EXIT 8, CT

Built 1962 Load: 37.3 t ADT: 48,900

INTERSTATE 84 WB

Fair

Over: INTERSTATE 84 RAMP 028

1 MI EAST OF EXIT 10, CT

Built 1972 Load: 37.3 t ADT: 32,100

INTERSTATE 84 WEST

Fair

Over: US RTE 6 EB & SR 531 WB

2 MI WEST W. HARTFORD TL., CT

Built 1969 Load: 37.3 t ADT: 45,100

WEST AVENUE

Fair

Over: NOROTON RIVER

0.3 MI EAST OF ROUTE 106, CT

Built 1957 Load: 37.3 t ADT: 7,110

DEWITT STREET

Fair

Over: METRO NORTH RAILROAD

100 N OF LAMBERTON ST, CT

Built 1914 Load: 37.3 t ADT: 552

I-84 EB ONRAMP 186

Fair

Over: I-84 WB EXIT 48 ON RAMP

EB ON RAMP FROM BROAD ST, CT

Built 1979 Load: 37.3 t ADT: 13,100

OLD CLINTON ROAD

Fair

Over: PATCHOGUE RIVER

750 FEET N OF U.S.ROUTE 1, CT

Built 1976 Load: 37.3 t ADT: 3,305

HURLBUTT ROAD

Fair

Over: PROV & WORC RAILROAD

0.5 MI W OF ROUTE 12, CT

Built 1989 Load: 37.3 t ADT: 82

I-384 TR 801 EB

Fair

Over: US 6 EASTBOUND

.2MI W OF RTE 44 & 84 JCT, CT

Built 1986 Load: 37.3 t ADT: 18,600

Showing 1,301-1,350 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.