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

US ROUTE 1

Fair

Over: STONY BROOK

0.4 MI W. OF ROUTE 33, CT

Built 1958 Load: 44.7 t ADT: 10,400

I-91 NB RAMP 141

Fair

Over: I-91 NB RAMP 140

I91 NB OFF RAMP TO WILLOW, CT

Built 1965 Load: 44.7 t ADT: 4,300

GREENWOODS ROAD

Fair

Over: ROUTE 8

0.5 MILES SOUTH EXIT 46, CT

Built 1969 Load: 44.7 t ADT: 2,500

SR 541-BOLTON ROAD

Fair

Over: INTERSTATE-84

0.3 MILE SOUTH OF RTE. 30, CT

Built 1978 Load: 44.7 t ADT: 6,600

ROUTE 9 NORTHBOUND

Fair

Over: FAIR VIEW CEMETERY ROAD

.5 MI SOUTH NEWINGTON TL, CT

Built 1976 Load: 44.7 t ADT: 36,400

ROMFORD ROAD

Fair

Over: BANTAM RIVER

1.7 MI N OF ROUTE 109, CT

Built 1910 Load: 44.7 t ADT: 380

INTERSTATE-91

Fair

Over: SOUTH ROAD

1 MILE SOUTH OF EXIT 47, CT

Built 1960 Load: 44.7 t ADT: 99,000

ROUTE 197

Fair

Over: MUDDY BROOK

.5 MI EAST OF RTE 169, CT

Built 1987 Load: 44.7 t ADT: 2,600

BASIN MAIN ROAD

Fair

Over: MAD RIVER

OLD ROUTE 44, CT

Built 1940 Load: 44.7 t ADT: 42

CHURCH STREET

Fair

Over: CHURCH STREET TUNNEL

100 SOUTH OF GEORGE ST, CT

Built 1963 Load: 44.7 t ADT: 15,300

CANAAN MOUNTAIN RD

Fair

Over: WANGUM LAKE BROOK

NORTH OF UNDER MTN RD, CT

Built 1988 Load: 44.8 t ADT: 125

BEACHSIDE AVENUE

Fair

Over: SASCO BROOK

AT FAIRFIELD TOWN LINE, CT

Built 1989 Load: 44.9 t ADT: 3,100

INTERSTATE 95

Fair

Over: US ROUTE 1 NORTHBOUND

AT EXIT 24, CT

Built 1958 Load: 45.0 t ADT: 107,700

INTERSTATE-95

Fair

Over: MILL PLAIN ROAD

0.1 MI N OF US ROUTE 1, CT

Built 1958 Load: 45.0 t ADT: 70,500

INTERSTATE-95

Fair

Over: COW HILL ROAD

0.4 MI S OF ROUTE 81, CT

Built 1957 Load: 45.0 t ADT: 52,200

LONG HILL ROAD

Fair

Over: INTERSTATE-95

0.8 MI N OF ROUTE 81, CT

Built 1957 Load: 45.0 t ADT: 2,100

SSR 449

Fair

Over: INTERSTATE-95

0.7 MI N. OF ROUTE 156, CT

Built 1958 Load: 45.0 t ADT: 3,600

INTERSTATE-395

Fair

Over: OTROBANDO AVENUE

.3 MI N OF ROUTES 2 & 32, CT

Built 1958 Load: 45.0 t ADT: 37,800

US ROUTE 7 SB

Fair

Over: I - 84 RAMP 802

.3 MI SOUTH OF I84, CT

Built 1962 Load: 45.0 t ADT: 16,500

ROUTE 15

Fair

Over: METRO-NORTH RAILROAD

0.2 MI N OF US ROUTE 7, CT

Built 1937 Load: 45.0 t ADT: 54,320

ROUTE 71

Fair

Over: BASS BROOK

1 MI SO. OF FARMINGTON TL, CT

Built 1958 Load: 45.0 t ADT: 9,300

SQUAW ROCK ROAD

Fair

Over: INTERSTATE-395

1.6 MI S OF US ROUTE 6, CT

Built 1962 Load: 45.0 t ADT: 122

ROUTE 200

Fair

Over: ABANDONED RAILROAD

.4 E OF BUCKLEY HILL RD, CT

Built 1960 Load: 45.0 t ADT: 4,800

INTERSTATE-95 NB

Fair

Over: SR 900 (KINGS HIGHWAY)

300 FT N OF US ROUTE 1, CT

Built 1964 Load: 45.0 t ADT: 25,600

ROUTE 15

Fair

Over: CONVERSE POND BROOK

0.3 MI N OF EXIT NO. 28, CT

Built 1934 Load: 45.0 t ADT: 59,020

ROUTE 72 NB

Fair

Over: ROUTE 10

1.5 MI W OF INTERSTATE-84, CT

Built 1975 Load: 45.0 t ADT: 28,000

WOODCREST AVENUE

Fair

Over: ROUTE 8 & MERRITT BLVD

0.8 MI N OF ROUTE 15, CT

Built 1975 Load: 45.0 t ADT: 695

KEENEY STREET

Fair

Over: INTERSTATE-384

1 MILE WEST ROUTE 83, CT

Built 1968 Load: 45.0 t ADT: 13,100

GRAND AVENUE

Fair

Over: METRO NORTH RAILROAD

50 EAST OF STATE STREET, CT

Built 1933 Load: 45.0 t ADT: 9,800

STANTON ROAD

Fair

Over: YANTIC RIVER

600 FT N OF ROUTE 608, CT

Built 1957 Load: 45.0 t ADT: 401

NEW STREET

Fair

Over: STILL RIVER

200 FEET EAST OF SR 800, CT

Built 1970 Load: 45.0 t ADT: 1,060

OLD TOWN ROAD

Fair

Over: PEQUONNOCK RV & TRAIL

150 FT W OF ROUTE 127, CT

Built 1971 Load: 45.0 t ADT: 15,050

GRASMERE AVENUE

Fair

Over: METRO NORTH RAILROAD

JCT KINGS HWY EAST, CT

Built 1900 Load: 45.0 t ADT: 4,700

VINEYARD ROAD

Fair

Over: BURLINGTON BROOK

300 WEST OF RTE 4, CT

Built 2016 Load: 45.0 t ADT: 1,323

RTES 82 WB & 32 SB

Fair

Over: SR 646 YANTIC RV NECRR

2.0 MI E OF I-395, CT

Built 1984 Load: 45.1 t ADT: 10,700

ROUTE 169

Fair

Over: BLACKWELL BROOK

5 MILES NORTH OF ROUTE 14, CT

Built 1927 Load: 45.3 t ADT: 2,300

WILSON STREET

Fair

Over: INTERSTATE-95

0.6 MI EAST GRWCH TL, CT

Built 1958 Load: 45.4 t ADT: 2,423

STEVENS AVENUE

Fair

Over: INTERSTATE 95

0.7 MI N OF ROUTE 162, CT

Built 1957 Load: 45.4 t ADT: 4,727

SR 693 SOUTHBOUND

Fair

Over: INTERSTATE-395 NB

1.0 MI N OF ROUTE 32, CT

Built 1958 Load: 45.4 t ADT: 9,500

ROUTE 164

Fair

Over: INTERSTATE 395

I-395 EXIT NO. 85, CT

Built 1958 Load: 45.4 t ADT: 7,700

ROUTE 4

Fair

Over: LEADMINE BROOK

0.1 MILE EAST OF RTE. 118, CT

Built 1927 Load: 45.4 t ADT: 13,100

U.S. ROUTE 7

Fair

Over: GUNN BROOK

0.10 MI SOUTH OF ROUTE 45, CT

Built 1924 Load: 45.4 t ADT: 2,100

US ROUTE 44

Fair

Over: MILL BROOK

1.3 MI EAST COLEBROOK TL, CT

Built 1934 Load: 45.4 t ADT: 5,200

SR 911 (NEWTOWN RO

Fair

Over: INTERSTATE 84

EXIT 8 ROUTE 84 & US 6, CT

Built 1962 Load: 45.4 t ADT: 12,600

INTERSTATE-395 NB

Fair

Over: ROUTE 12

.31 MI NO OF DOG HILL RD, CT

Built 1962 Load: 45.4 t ADT: 16,050

ROUTE 179

Fair

Over: MILL RACE

2 MILES NORTH OF ROUTE 4, CT

Built 1959 Load: 45.4 t ADT: 10,400

ROUTE 8 NORTHBOUND

Fair

Over: ECHO LAKE ROAD

1.9 MI NORTH WATERBURY LN, CT

Built 1964 Load: 45.4 t ADT: 15,100

INTERSTATE-95 SB

Fair

Over: ROUTE 27

0.4 MI N OF MYSTIC RIVER, CT

Built 1964 Load: 45.4 t ADT: 26,100

SR636 BRIGGS ST

Fair

Over: I-95&SR623+641&I-95 310

0.39 MI S OF ROUTE 32 INT, CT

Built 1973 Load: 45.4 t ADT: 3,400

US ROUTE 5

Fair

Over: QUINNIPIAC RIVER

.2 MI S OF INTERSTATE-91, CT

Built 1973 Load: 45.4 t ADT: 19,200

Showing 1,901-1,950 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.