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

OLD KINGS HIGHWAY

Poor

Over: STONY BROOK

700 FEET EAST OF ROUTE 1, CT

Built 1935 Load: 24.6 t ADT: 3,820

BOSTON HOLLOW RD 2

Poor

Over: BIGELOW BROOK

AT EASTFORD TOWN LINE, CT

Built 1910 Load: 24.7 t ADT: 55

ROUTE 17 NB

Poor

Over: ROUTE 17 SB RAMP 007

0.1 MI N OF NEW LONDN TPK, CT

Built 1952 Load: 24.9 t ADT: 11,800

MILLER-GOODWIN CON

Poor

Over: LITTLE RIVER

0.5 MI SOUTH OF ROUTE 14, CT

Built 1930 Load: 24.9 t ADT: 175

WEST MORRIS ROAD

Poor

Over: BANTAM RIVER

0.5 MI SO. OF MORRIS T.L., CT

Built 1956 Load: 24.9 t ADT: 199

WILSONVILLE ROAD

Poor

Over: FRENCH RIVER

200 FEET EAST OF ROUTE 12, CT

Built 1936 Load: 25.1 t ADT: 1,168

TOELLES ROAD

Poor

Over: QUINNIPIAC RIVER

100FT E OF ROUTE 15, CT

Built 1982 Load: 25.3 t ADT: 8,703

BUNKER HILL ROAD

Poor

Over: HOP RIVER

600 FT EAST OF RTE 6, CT

Built 1960 Load: 25.3 t ADT: 337

NAUGATUCK AVENUE

Poor

Over: METRO NORTH RAILROAD

100 NORTH OF I-95, CT

Built 1929 Load: 25.4 t ADT: 3,790

MERRYALL ROAD

Poor

Over: WEST ASPETUCK RIVER

JCT OF W MEETINGHOUSE RD, CT

Built 1937 Load: 25.9 t ADT: 655

INTERSTATE 95 NORT

Poor

Over: THAMES RV RR LOCAL ROADS

1.04 MI S OF N JCT US1 EB, CT

Built 1943 Load: 26.0 t ADT: 42,600

ROUTE 322

Poor

Over: TEN MILE RIVER

210 FT E OF ROUTE 10, CT

Built 1989 Load: 26.2 t ADT: 9,500

INTERSTATE-91 SB

Poor

Over: CSORR SR 598WB & TR803

DUTCH POINT VIADUCT, CT

Built 1964 Load: 26.6 t ADT: 50,700

OLD ROAD #2

Poor

Over: SASCO BROOK

AT FAIRFIELD TOWN LINE, CT

Built 1965 Load: 26.8 t ADT: 1,990

CHURCH STREET

Poor

Over: W BR NAUGATUCK RIVER

300 WEST OF WATER STREET, CT

Built 1956 Load: 26.9 t ADT: 6,490

FERN STREET

Poor

Over: WEST BRANCH TROUT BROOK

0.2 MI WEST OF N. MAIN ST, CT

Built 1916 Load: 27.1 t ADT: 8,112

ISLAND BROOK AVE

Poor

Over: PEQUONNOCK RIVER

0.4 MI E OF US ROUTE 1, CT

Built 1938 Load: 27.2 t ADT: 8,240

CRANBERRY POND RD

Poor

Over: INTERSTATE 395

1.9 MI N OF ROUTE 82, CT

Built 1958 Load: 27.5 t ADT: 537

ROUTE 130

Poor

Over: PEQUONNOCK RIVER

0.2 MILE WEST OF I-95, CT

Built 1975 Load: 27.5 t ADT: 14,600

WELLERS BRIDGE RD

Poor

Over: SHEPAUG RIVER

APPROX 200EAST OF RTE 67, CT

Built 1955 Load: 27.5 t ADT: 3,000

ROUTE 66

Poor

Over: CONN RIVER RTE 9 P&W RR

0.25 MI W OF ROUTE 9, CT

Built 1938 Load: 28.4 t ADT: 29,600

KENYONVILLE ROAD

Poor

Over: STILL RIVER

0.1 MILE SOUTH OF RTE 171, CT

Built 1947 Load: 28.6 t ADT: 246

CURTISS STREET

Poor

Over: INTERSTATE-84

1.4 MI W OF ROUTE 10, CT

Built 1963 Load: 29.2 t ADT: 3,000

KENNEDY AVENUE

Poor

Over: STILL RIVER

I-84 EXIT 5 TO RTE 53 S, CT

Built 1964 Load: 29.2 t ADT: 6,375

BUCKLEY HILL ROAD

Poor

Over: FRENCH RIVER

0.1 MI SOUTH OF ROUTE 12, CT

Built 1937 Load: 29.4 t ADT: 1,900

ASHFORD ROAD

Poor

Over: BIGELOW BROOK

1/4 MI SO OF WESTFORD RD, CT

Built 1937 Load: 29.5 t ADT: 200

SOUTH ROAD

Poor

Over: STILL RIVER

150 FT EAST OF WINSTED RD, CT

Built 1984 Load: 29.8 t ADT: 104

ROUTE 40 NB

Poor

Over: CSX RR QUINNIPIAC RIVER

0.6 MI N OF 1-91 SB, CT

Built 1972 Load: 29.9 t ADT: 20,500

WRIGHT ROAD

Poor

Over: QUANDUCK BROOK

1 MI E OF SAWMILL HILL RD, CT

Built 1965 Load: 29.9 t ADT: 36

CONNELLY PARKWAY

Poor

Over: MILL RIVER

0.2 MI E OF ROUTE 10, CT

Built 1940 Load: 30.0 t ADT: 2,900

TUNNEL ROAD

Poor

Over: SHEPAUG RIVER

100 FT S OF CHURCH HILL R, CT

Built 1956 Load: 30.0 t ADT: 255

SALMON KILL ROAD

Poor

Over: SALMON CREEK

0.5 MI EAST OF ROUTE 112, CT

Built 2002 Load: 30.1 t ADT: 538

NAPCO DRIVE

Poor

Over: PEQUABUCK RIVER

0.5 MI E OF HARWINTON AVE, CT

Built 1950 Load: 30.1 t

ARROWHEAD ROAD

Poor

Over: NORWALK RIVER

400 FEET WEST OF ROUTE 7, CT

Built 1985 Load: 30.5 t ADT: 70

ROUTE 156

Poor

Over: FOUR MILE RIVER

E.LYME/OLD LYME TOWN LINE, CT

Built 1982 Load: 30.8 t ADT: 2,500

BUCKLEY HILL ROAD

Poor

Over: FRENCH RIVER CANAL

0.1 MI SO OF ROUTE 12, CT

Built 1976 Load: 30.8 t ADT: 645

WOOLSON STREET

Poor

Over: STEELE BROOK

0.2 MILE EAST OF ROUTE 63, CT

Built 1929 Load: 30.8 t ADT: 1,000

GRANTVILLE ROAD

Poor

Over: MAD RIVER

500 S OF DANBURY QUARTER, CT

Built 1956 Load: 30.8 t ADT: 133

PLEASANT ROAD

Poor

Over: INTERSTATE-91

0.25 MILES W OF ROUTE 5, CT

Built 1959 Load: 31.1 t ADT: 1,940

LONG HILL ROAD

Poor

Over: HOP RIVER

550 FT FR JCT RTE 6, CT

Built 1934 Load: 31.1 t ADT: 401

ROUTE 8 SOUTHBOUND

Poor

Over: RIVERSIDE ST-SUNNYSIDE

ROUTE 8 SOUTH OF I-84, CT

Built 1966 Load: 31.7 t ADT: 16,900

INTERSTATE-395

Poor

Over: BISHOP CROSSING RD

0.5 MI NORTH OF ROUTE 201, CT

Built 1958 Load: 31.8 t ADT: 31,500

ROUTE 8 NORTHBOUND

Poor

Over: ROUTE 8 SB & LOCAL ROADS

ROUTE 8 SOUTH OF I-84, CT

Built 1966 Load: 32.0 t ADT: 30,400

CHASE ROAD

Poor

Over: CADY BROOK

320FT EAST OF CADY ROAD, CT

Built 1940 Load: 32.4 t ADT: 238

ROUTE 154

Poor

Over: ROARING BROOK

100 FT N OF ROUTE 82, CT

Built 1931 Load: 32.7 t ADT: 3,800

ROUTE 15

Poor

Over: MC MULLEN AVENUE

0.1 MILE SOUTH OF RTE. 99, CT

Built 1943 Load: 32.7 t ADT: 31,000

ROUTE 74

Poor

Over: SKUNGAMAUG RIVER

1.8 MILES WEST OF I-84, CT

Built 1916 Load: 32.7 t ADT: 1,400

ROUTE 163

Poor

Over: OXOBOXO BROOK

3.3 MI S OF ROUTE 82, CT

Built 1925 Load: 32.7 t ADT: 1,100

ROUTE 263

Poor

Over: E BRANCH NAUGATUCK RIVER

1.5 MI E OF RT 272, CT

Built 1935 Load: 32.7 t ADT: 700

QUINNIPIAC STREET

Poor

Over: WALLACE RACEWAY

0.2 MI E OF ROUTE 15, CT

Built 1915 Load: 32.7 t ADT: 12,500

Showing 4,201-4,250 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.