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

GRISWOLD ROAD

Fair

Over: TWO STONE BROOK

1250 FEET WEST OF ROUTE 3, CT

Built 1961 Load: 38.6 t ADT: 5,412

ROUTE 25 TR 802

Fair

Over: PEQUONNOCK RIVER

RAMP FROM 25 SB TO 15 NB, CT

Built 1980 Load: 38.6 t ADT: 7,400

ROUTE 9 NORTHBOUND

Fair

Over: ROUTE 175 (CEDAR STREET)

ROUTE 9 EXIT NO. 29, CT

Built 1991 Load: 38.6 t ADT: 25,300

ROUTE 140

Fair

Over: WINDSOR LOCKS CANAL

50 EAST OF JCT ROUTE 159, CT

Built 1952 Load: 38.6 t ADT: 14,400

ROUTE 67

Fair

Over: LITTLE RIVER

1.0 MI E OF ROUTE 42, CT

Built 1933 Load: 38.8 t ADT: 13,700

ROUTE 198

Fair

Over: NATCHAUG RIVER

0.6 MILE NORTH OF ROUTE 6, CT

Built 1926 Load: 38.8 t ADT: 4,200

FAIRFIELD AVENUE 1

Fair

Over: INTERSTATE-95

0.5 MI S OF US ROUTE 1, CT

Built 1958 Load: 38.9 t ADT: 3,700

INTERSTATE-95

Fair

Over: CHURCH STREET

0.5 MI N OF ROUTE 130, CT

Built 1958 Load: 38.9 t ADT: 96,600

INTERSTATE-395

Fair

Over: ROUTE 85

I-395 EXIT NO. 2, CT

Built 1958 Load: 38.9 t ADT: 22,100

FITCH HILL ROAD

Fair

Over: INTERSTATE-395

1.2 MI S OF ROUTE 82, CT

Built 1958 Load: 38.9 t ADT: 15,500

US ROUTE 1

Fair

Over: HAMMONASSET RIVER

Madison\Clinton Townline, CT

Built 1961 Load: 38.9 t ADT: 8,000

US ROUTE 1A

Fair

Over: LAMBERTS COVE

0.4 MI E OF US ROUTE 1, CT

Built 1995 Load: 38.9 t ADT: 2,700

INTERSTATE 91

Fair

Over: CT RIVER AMTRAK RTE 159

BETWEEN EXITS 42 AND 44, CT

Built 1959 Load: 38.9 t ADT: 98,000

U.S. ROUTE 6

Fair

Over: COPPER MINE BROOK

0.6 MI EAST OF ROUTE 229, CT

Built 2002 Load: 38.9 t ADT: 19,600

ROUTE 8

Fair

Over: RTE 67 METRO N & RAMP 49

ROUTE 8 AT EXIT 22, CT

Built 1962 Load: 38.9 t ADT: 42,100

I-84 & I-84 RAMP 2

Fair

Over: MASHAPAUG POND

0.2 MILE EAST OF RTE 171, CT

Built 1940 Load: 38.9 t ADT: 51,700

ROUTE 20

Fair

Over: WEST BRANCH SALMON BROOK

0.2 MILE WEST OF RTE. 219, CT

Built 1957 Load: 38.9 t ADT: 1,900

PROSPECT STREET

Fair

Over: INTERSTATE-84

.4 MI EAST OF EXIT 30, CT

Built 1961 Load: 38.9 t ADT: 1,400

ROUTE 198

Fair

Over: BIGELOW BROOK

.8MI SOUTH OF US ROUTE 44, CT

Built 1939 Load: 38.9 t ADT: 2,200

ROUTE 313

Fair

Over: NAUGATUCK RIVER

450 FEET EAST OF ROUTE 8, CT

Built 1958 Load: 38.9 t ADT: 9,900

AIRPORT PERIM. RD

Fair

Over: SSR 401

AT EAST GRANBY TOWN LINE, CT

Built 1961 Load: 38.9 t ADT: 111

ROUTE 8 SOUTHBOUND

Fair

Over: STEELE BROOK

1.2 MILES NORTH OF I-84, CT

Built 1965 Load: 38.9 t ADT: 25,900

HARRISON ROAD

Fair

Over: INTERSTATE-91

.50 MI SOUTH OF ROUTE 150, CT

Built 1965 Load: 38.9 t ADT: 4,100

ROUTE 8 NORTHBOUND

Fair

Over: BANK & S.LEONARD STREETS

.6 MI SOUTH OF INTERST 84, CT

Built 1966 Load: 38.9 t ADT: 25,300

INTERSTATE-84 EB

Fair

Over: PARK STREET

.53 MI E OF OLIVE ST OP, CT

Built 1969 Load: 38.9 t ADT: 68,900

DENNISON ROAD

Fair

Over: ROUTE 9

0.3 MI N OF ROUTE 154, CT

Built 1967 Load: 38.9 t ADT: 1,273

INTERSTATE-84 WB

Fair

Over: SR 508

1.61 MI WEST W.HTFD TL, CT

Built 1969 Load: 38.9 t ADT: 47,700

ROUTE 8 SOUTHBOUND

Fair

Over: WELLS STREET

1.9 MI N OF I 95, CT

Built 1970 Load: 38.9 t ADT: 55,900

COURT STREET

Fair

Over: METRO NORTH RAILROAD

1 TENTH EAST OF STATE ST, CT

Built 1907 Load: 38.9 t ADT: 408

FERRY STREET

Fair

Over: AMTRAK RAILROAD

0.03 MI E OF JCT RTE 5, CT

Built 1912 Load: 38.9 t ADT: 13,600

CORNELL ROAD

Fair

Over: ROOSTER RIVER

1 MILE SOUTH OF ROUTE 59, CT

Built 1933 Load: 38.9 t ADT: 5,070

BOCE BARLOW WAY

Fair

Over: AMTRAK & CT SOUTHERN RR

.4 MI SOUTH OF FISHFRY ST, CT

Built 1984 Load: 38.9 t ADT: 15,700

ROUTE 9 SOUTHBOUND

Fair

Over: ROUTE 175 (CEDAR STREET)

ROUTE 9 EXIT NO. 29, CT

Built 1991 Load: 38.9 t ADT: 23,400

HOCKANUM BOULEVARD

Fair

Over: HOCKANUM RIVER

0.2 MILES WEST OF RTE 83, CT

Built 2000 Load: 38.9 t ADT: 324

WINTERGREEN AVENUE

Fair

Over: ROUTE 15

1.5 MI SOUTH OF RTE 10, CT

Built 1949 Load: 39.0 t ADT: 1,400

ROUTE 67

Fair

Over: NAUGATUCK RIVER

JUST WEST OF ROUTE 313, CT

Built 1936 Load: 39.0 t ADT: 15,600

ROUTE 85

Fair

Over: LATIMERS BROOK

0.9 MI N OF ROUTE 161, CT

Built 1922 Load: 39.0 t ADT: 8,400

PRESTON AVENUE

Fair

Over: ROUTE 66

0.6MI W JCT I-691 &RTE 66, CT

Built 1965 Load: 39.0 t ADT: 5,600

ROUTE 9 NORTHBOUND

Fair

Over: FILLEY ROAD

0.5 MI S BEAVER MEADOW RD, CT

Built 1966 Load: 39.0 t ADT: 15,600

MIRY BROOK ROAD

Fair

Over: MIRY BROOK

50 EAST OF PINE MTN RD, CT

Built 1955 Load: 39.0 t ADT: 5,470

BRIDGE STREET

Fair

Over: METRO-NORTH RAILROAD

495 FT N OF ROUTE 136, CT

Built 1900 Load: 39.0 t ADT: 1,037

SOUTH LEONARD ST

Fair

Over: METRO-NORTH RAILROAD

1 M WEST OF SOUTH MAINST, CT

Built 1929 Load: 39.0 t ADT: 950

JACOBS STREET

Fair

Over: PEQUABUCK RIVER

0.29 MILES WEST OF RTE 69, CT

Built 1920 Load: 39.0 t ADT: 3,560

OLD COLONY ROAD

Fair

Over: BUNGEE BROOK

3800 FT EAST OF ROUTE 198, CT

Built 1933 Load: 39.0 t ADT: 850

WEST ROAD

Fair

Over: BLACKLEDGE RIVER

.1MI EAST OF JONES HOLLOW, CT

Built 1968 Load: 39.0 t ADT: 2,100

SOUTH EAGLE ROAD

Fair

Over: PAN AM RAILROAD

200 FEET N. OF S. MAIN ST, CT

Built 1991 Load: 39.0 t ADT: 1,100

MARION ROAD

Fair

Over: INTERSTATE 84

1.8 MI E ROUTE 70, CT

Built 1961 Load: 39.1 t ADT: 3,600

WHITFIELD STREET

Fair

Over: SLUICE CREEK

1 MILE SOUTH OF RTE 146, CT

Built 1999 Load: 39.1 t ADT: 1,872

WOLF DEN DRIVE

Fair

Over: MASHAMOQUET BROOK

.5 MI SOUTH OF ROUTE 101, CT

Built 1900 Load: 39.1 t ADT: 118

CHURCH STREET

Fair

Over: EAST ASPETUCK RIVER

100 FEET WEST OF ROUTE 45, CT

Built 1986 Load: 39.1 t ADT: 135

Showing 1,451-1,500 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.