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

SR 707

Good

Over: LAKE WHITNEY

2M S OF JCT RT10 & SR 707, CT

Built 1992 Load: 27.2 t ADT: 11,800

BENHAM STREET

Good

Over: ROUTE 15

0.3 MI S OF ROUTE 10, CT

Built 1949 Load: 27.5 t ADT: 8,600

SSR 437

Good

Over: WINTHROP COVE

475 FT E OF ROUTE 32, CT

Built 1973 Load: 27.5 t ADT: 2,600

WOODBRIDGE ROAD

Good

Over: SKUNGAMUNG RIVER

0.25 MI S OF SOUTH RD, CT

Built 1986 Load: 27.5 t ADT: 451

RIVER STREET

Good

Over: FACTORY TUNNEL

0.1 MILE EAST OF RTE.14, CT

Built 1920 Load: 27.5 t ADT: 254

I-95 TR 813

Good

Over: EAST STREET & PWRR

AT WEST END OF Q-BRIDGE, CT

Built 1958 Load: 27.9 t ADT: 17,200

ROUTE 9 SOUTHBOUND

Good

Over: SR 505 {ELLA GRASSO BLD}

0.4 MI N OF ROUTE 175, CT

Built 1991 Load: 27.9 t ADT: 23,400

FAIRFIELD AVENUE

Good

Over: INTERSTATE-95

0.3 MI S OF US ROUTE 7, CT

Built 2015 Load: 28.5 t ADT: 8,600

MOOSE HILL ROAD

Good

Over: AMTRAK RAILROAD

0.1 MI N OF ROUTE 146, CT

Built 1925 Load: 28.5 t ADT: 650

MANSION ROAD

Good

Over: MILL RIVER

175 FT E OF ROUTE 10, CT

Built 1999 Load: 28.5 t ADT: 306

ROUTE 147

Good

Over: COGINCHAUG RIVER

0.7 MI S OF ROUTE 157, CT

Built 2013 Load: 28.8 t ADT: 6,000

ROUTE 87

Good

Over: TEN MILE RIVER

LEBANON COLUMBIA TOWNLINE, CT

Built 1990 Load: 28.8 t ADT: 3,200

I-291 EASTBOUND

Good

Over: TOLLAND TPKE & CSRR

0.40 MI east of Batson Rd, CT

Built 1993 Load: 28.8 t ADT: 18,300

BIA ROUTE 407

Good

Over: UNKNOWN STREAM

4.7KM NE LEYARD CT, CT

Built 1993 Load: 29.3 t ADT: 1,000

AUSTIN ROAD

Good

Over: INTERSTATE 84

I-84 EB EXIT 25A, CT

Built 1961 Load: 29.5 t ADT: 12,900

NORTH AVENUE #2

Good

Over: ASPETUCK RIVER

50 FT W OF COLEYTOWN RD, CT

Built 1957 Load: 29.5 t ADT: 535

ROUTE 150

Good

Over: QUINNIPIAC RIVER

600 FT E OF ROUTE 15, CT

Built 1991 Load: 29.5 t ADT: 8,500

ROUTE 156

Good

Over: BRIDE BROOK

0.1 MI E OF SR 449, CT

Built 1994 Load: 29.5 t ADT: 8,200

WRIGHT ROAD

Good

Over: CHERRY BROOK

0.2 MI WEST OF ROUTE 179, CT

Built 1994 Load: 29.5 t ADT: 570

WEST ROAD

Good

Over: ROUTE 11 SOUTHBOUND

2.0 MI S OF ROUTE 2, CT

Built 1971 Load: 29.8 t ADT: 671

ROUTE 83

Good

Over: KIMBALLS BROOK

0.2 MILE NORTH OF RTE 140, CT

Built 1927 Load: 29.8 t ADT: 7,700

MILL STREET

Good

Over: QUINNIPIAC RIVER

0.2 MI W OF ROUTE 10, CT

Built 1955 Load: 29.8 t ADT: 3,162

RIVERSIDE AVENUE

Good

Over: METRO-NORTH RAILROAD

AT RIVERSIDE STATION, CT

Built 1895 Load: 29.8 t ADT: 10,596

LEETES ISLAND ROAD

Good

Over: INTERSTATE-95

0.3 MI S OF US ROUTE 1, CT

Built 2003 Load: 30.1 t ADT: 3,500

ALLYNDALE ROAD

Good

Over: KONKAPOT RIVER

NORTH OF SODOM RD, CT

Built 1982 Load: 30.1 t ADT: 378

OLD KINGS HIGHWAY

Good

Over: LITTLE RIVER

0.25 MILE EAST ROUTE 97, CT

Built 2001 Load: 30.2 t ADT: 324

WEST MAIN STREET

Good

Over: WEPAWAUG RIVER

0.3 MI N OF ROUTE 162, CT

Built 1928 Load: 30.5 t ADT: 8,470

COLD BROOK ROAD

Good

Over: ROARING BROOK

0.5 MI. EAST OF WOODLAND, CT

Built 1968 Load: 30.5 t ADT: 1,420

ROUTE 69

Good

Over: SARGENT RIVER

2.8 MI N OF ROUTE 15, CT

Built 1988 Load: 30.5 t ADT: 5,600

HART STREET

Good

Over: QUINNIPIAC RIVER

0.2 MI W OF ROUTE 10, CT

Built 1987 Load: 30.6 t ADT: 3,000

INTERSTATE-84 WB

Good

Over: BERKSHIRE ROAD

0.7 MI E OF FARMINGTON TL, CT

Built 2022 Load: 30.8 t ADT: 69,200

ROUTE 114

Good

Over: WEPAWAUG RIVER

1.1 MI N OF ROUTE 243, CT

Built 1996 Load: 30.8 t ADT: 7,200

US ROUTE 6 RMP 002

Good

Over: SNAKE MEADOW BROOK

2 MILES EAST OF I-395, CT

Built 1946 Load: 30.8 t ADT: 850

ROUTE 9 RAMP 027

Good

Over: PONSET BROOK

RTE. 9 SB EXIT 9 OFF RAMP, CT

Built 1965 Load: 30.8 t ADT: 4,000

ROUTE 9 RAMP 026

Good

Over: PONSET BROOK

RTE. 9 NB EXIT 9 OFF RAMP, CT

Built 1965 Load: 30.8 t ADT: 800

SR 796 RAMP 001

Good

Over: MEADOW STREET

0.1 MI N OF US ROUTE 1, CT

Built 1941 Load: 30.8 t ADT: 6,200

BROOK STREET

Good

Over: WILMOT BROOK

0.2 MI W OF ROUTE 15, CT

Built 1950 Load: 30.8 t ADT: 5,200

NORTH SHORE ROAD

Good

Over: BANTAM RIVER

.5 MILE EAST OF RTE.202, CT

Built 1980 Load: 30.8 t ADT: 444

WINDERMERE AVENUE

Good

Over: HOCKANUM RIVER

500 FT FR JCT ROUTE 286, CT

Built 2009 Load: 30.8 t ADT: 1,900

CHESTNUT HILL ROAD

Good

Over: HAMMONASSET RIVER

0.3 MI E. OF ROUTE 79, CT

Built 1935 Load: 30.8 t ADT: 841

GOSHEN HILL ROAD

Good

Over: PEASE BROOK

1 MILE WEST OF RTE. 87, CT

Built 2003 Load: 30.8 t ADT: 459

MAPLEDALE ROAD

Good

Over: RACE BROOK

0.3 MI N OF ROUTE 152, CT

Built 1983 Load: 30.8 t ADT: 2,449

ROUTE 81

Good

Over: PONSET BROOK

0.2 MI S OF ROUTE 154, CT

Built 1983 Load: 30.8 t ADT: 3,300

SPRING STREET

Good

Over: DEEP RIVER

150 FT W OF ROUTE 154, CT

Built 1982 Load: 30.8 t ADT: 1,374

SHODDY MILL ROAD

Good

Over: BURNAP BROOK

1.0 MI EAST OF HEBRON RD, CT

Built 1947 Load: 30.8 t ADT: 541

CANAL STREET

Good

Over: DERBY CANAL

25 WEST OF ROUTE 34, CT

Built 2005 Load: 30.8 t ADT: 292

SILVER BIRCH LANE

Good

Over: BROOK

0.4 MILE WEST OF ROUTE 81, CT

Built 1980 Load: 30.8 t ADT: 780

ROUTE 171

Good

Over: HAMILTON RESERVOIR BROOK

.3 MILE WEST OF I-84, CT

Built 1954 Load: 31.0 t ADT: 1,200

ROUTE 216

Good

Over: GREEN FALLS RIVER

1.3 MI W OF I-95, CT

Built 1949 Load: 31.1 t ADT: 1,500

ROUTE 63

Good

Over: BEACON HILL BROOK

1.2 MILES N OF ROUTE 42, CT

Built 1966 Load: 31.1 t ADT: 7,700

Showing 3,001-3,050 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.