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 175

Fair

Over: MILL BROOK

475 FT EAST OF ROUTE 173, CT

Built 1984 Load: 34.0 t ADT: 24,800

EAST ROAD

Fair

Over: MOUNTAIN BROOK

500 FEET EAST OF ROUTE 69, CT

Built 2011 Load: 34.0 t ADT: 3,162

INTERSTATE-91

Fair

Over: ROUTE 17

EXIT 8 ROUTE 91, CT

Built 1965 Load: 34.1 t ADT: 120,300

LAKE AVENUE

Fair

Over: HORSENECK BROOK

100 FT N OF WOODDALE RD, CT

Built 1987 Load: 34.2 t ADT: 4,500

INTERSTATE-95

Fair

Over: MENUNKETESUCK RIVER

0.4 MI S OF ROUTE 145, CT

Built 1957 Load: 34.3 t ADT: 50,900

US ROUTE 1

Fair

Over: QUIAMBAUG COVE

1.5 MI N OF ROUTE 27, CT

Built 1960 Load: 34.3 t ADT: 6,900

ROUTE 15

Fair

Over: HUNTINGTON ROAD

0.7 MI N OF ROUTE 8, CT

Built 1940 Load: 34.3 t ADT: 80,000

US ROUTE 202

Fair

Over: EAST ASPETUCK RIVER

.5 MI N OF NEW MILFORD TL, CT

Built 1933 Load: 34.3 t ADT: 6,900

ROUTE 67

Fair

Over: JACKS BROOK

0.1 MI W OF ROUTE 42, CT

Built 1933 Load: 34.3 t ADT: 13,900

INTERSTATE 84

Fair

Over: FRANKLIN STREET

0.5 MILES WEST ROUTE 39, CT

Built 1962 Load: 34.3 t ADT: 116,800

OLD HAWLEYVILLE RD

Fair

Over: INTERSTATE 84

BETWEEN EXITS 8 & 9, CT

Built 1962 Load: 34.3 t ADT: 7,700

SECOR ROAD

Fair

Over: INTERSTATE 84

BETWEEN EXITS 8 AND 9, CT

Built 1962 Load: 34.3 t ADT: 832

SCHOOL HOUSE HILL

Fair

Over: INTERSTATE 84

0.5 WEST OF EXIT 10, CT

Built 1962 Load: 34.3 t ADT: 1,113

ROUTE 107

Fair

Over: METRO-NORTH RAILROAD

.3 MI N. OF US ROUTE 7, CT

Built 1954 Load: 34.3 t ADT: 10,400

INTERSTATE-291 WB

Fair

Over: AMTRAK & BIKE PATH

.5 MI E. OF ROUTE 159 JCT, CT

Built 1958 Load: 34.3 t ADT: 33,050

INTERSTATE-91

Fair

Over: GREAT MEADOW ROAD

1.2 MILE S OF HARTFORD TL, CT

Built 1964 Load: 34.3 t ADT: 106,700

INTERSTATE-95 SB

Fair

Over: BUDDINGTON ROAD

1.4 MI N OF ROUTE 12, CT

Built 1964 Load: 34.3 t ADT: 30,500

INTERSTATE-84 EAST

Fair

Over: NEW PARK AV AMTRAK SR504

NEW PARK AV AMTRAK SR504, CT

Built 1967 Load: 34.3 t ADT: 58,800

ROUTE 9 SOUTHBOUND

Fair

Over: BEAVER MEADOW ROAD

0.19 MI S OF EXIT 8 SB, CT

Built 1967 Load: 34.3 t ADT: 15,100

GARDNER STREET

Fair

Over: INTERSTATE-384 + HOP BRK

1 MI EAST JUNC RT 83, CT

Built 1970 Load: 34.3 t ADT: 470

OLD TOWN ROAD

Fair

Over: ROUTE 25 NORTHBOUND

0.3 MI N OF ROUTE 8, CT

Built 1972 Load: 34.3 t ADT: 14,400

CENTRAL STREET #2

Fair

Over: PEQUABUCK RIVER

AT JUNCTION WITH ROUTE 72, CT

Built 1956 Load: 34.3 t ADT: 9,792

EAST ROCK ROAD

Fair

Over: MILL RIVER

AT JUNCT W FARNUM DRIVE, CT

Built 1900 Load: 34.3 t ADT: 1,365

Under Mountain Roa

Fair

Over: Wangum Lake Brook

EAST OF COBBLE ROAD, CT

Built 1956 Load: 34.3 t ADT: 238

SR 729

Fair

Over: QUINNIPIAC RIVER

105 FT E OF US ROUTE 5, CT

Built 1989 Load: 34.3 t ADT: 7,600

COLUMBUS AVENUE

Fair

Over: HARBOR BROOK

280 FT S OF HANOVER ST, CT

Built 1992 Load: 34.4 t ADT: 600

US ROUTE 202

Fair

Over: US ROUTE 7

1.3 MI N OF ROUTE 133, CT

Built 1976 Load: 34.5 t ADT: 17,600

TREADWELL STREET

Fair

Over: FARMINGTON CANAL GREENWA

0.1 MI E OF ROUTE 10, CT

Built 1946 Load: 34.5 t ADT: 3,700

LAMBERTON STREET

Fair

Over: METRO NORTH RAILROAD

AT JUNCTION W PLYMOUTH ST, CT

Built 1907 Load: 34.5 t ADT: 3,865

BULLS BRIDGE ROAD

Fair

Over: HOUSATONIC RIVER

NEAR N.U. CANAL, CT

Built 1842 Load: 34.5 t ADT: 400

SCHOOL HOUSE HILL

Fair

Over: HOUSATONIC RAILROAD

500 EAST OF JCT BLVD RD, CT

Built 1991 Load: 34.5 t ADT: 949

WELLS ROAD

Fair

Over: EAST ASPETUCK RIVER

OFF WELLSVILLE AVE, CT

Built 1992 Load: 34.5 t ADT: 1,202

INTERSTATE-95

Fair

Over: ROUTE 136 & SAUGATUCK

BETWEEN EXIT 17 & 18 I-95, CT

Built 1958 Load: 34.6 t ADT: 110,000

I-95 RAMP 096

Fair

Over: SEAVIEW AVE

RAMP FROM RT 130 TO I95SB, CT

Built 1999 Load: 34.6 t ADT: 7,600

HARTFORD TPKE #1

Fair

Over: ROUTE 15

1 TENTH SOUTH OF ROUTE 22, CT

Built 1947 Load: 34.6 t ADT: 4,547

INTERSTATE-91

Fair

Over: ROUTE 140

AT EXIT 45, CT

Built 1959 Load: 34.6 t ADT: 108,500

U.S. ROUTE 7

Fair

Over: N MOUNTAIN RD & LIMEKILN

STRUCTURE 18-113-3, CT

Built 2009 Load: 34.6 t ADT: 12,200

NEW ROAD

Fair

Over: INTERSTATE-95

1.4 MI N OF ROUTE 79, CT

Built 1957 Load: 34.7 t ADT: 1,400

WHIPPOORWILL ROAD

Fair

Over: INTERSTATE-95

2.0 MI N. OF ROUTE 156, CT

Built 1958 Load: 34.7 t ADT: 1,081

GALLIVAN LANE

Fair

Over: INTERSTATE-395

0.2 MI S OF ROUTE 2A, CT

Built 1958 Load: 34.7 t ADT: 489

CANTERBURY TURNPKE

Fair

Over: INTERSTATE-395

.2 MI SOUTH OF ROUTE 97, CT

Built 1958 Load: 34.7 t ADT: 1,700

ROUTE 2

Fair

Over: EAST RIVER DRIVE

1 MI EAST OF HARTFORD TL, CT

Built 1958 Load: 34.7 t ADT: 28,300

US ROUTE 6

Fair

Over: QUANDUCK BROOK

1.5 MI W OF RI STATE LINE, CT

Built 1946 Load: 34.7 t ADT: 6,100

ROUTE 10

Fair

Over: NOD BROOK

0.4 MI NORTH OF ROUTE 44, CT

Built 1956 Load: 34.7 t ADT: 11,400

ROUTE 12

Fair

Over: CANAL

1.5 MI NORTH OF ROUTE 200, CT

Built 1928 Load: 34.7 t ADT: 4,000

REDDING ROAD

Fair

Over: ROUTE 15

1 MI EAST OF WESTPORT TL, CT

Built 1939 Load: 34.7 t ADT: 2,200

INTERSTATE 84

Fair

Over: ROUTE 37 (NORTH STREET)

JCT OF RT 37, CT

Built 1960 Load: 34.7 t ADT: 107,500

INTERSTATE-84 WB

Fair

Over: ROUTE 70

2.4 MI W OF I-691, CT

Built 1961 Load: 34.7 t ADT: 45,000

INTERSTATE-84 EB

Fair

Over: SHADDUCK ROAD

.5 MI SOUTH OF ROUTE 188, CT

Built 1964 Load: 34.7 t ADT: 36,900

SR 660

Fair

Over: SHETUCKET RIVER

05 MI NORTH OF ROUTE 97, CT

Built 1939 Load: 34.7 t ADT: 2,600

Showing 1,101-1,150 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.