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 80

Good

Over: MENUNKETESUCK RIVER

1.3.MI E. OF ROUTE 81, CT

Built 1983 Load: 63.5 t ADT: 3,600

INTERSTATE-91 SB

Good

Over: ROUTE 178 (PARK AVENUE)

AT EXIT 36, CT

Built 1991 Load: 63.5 t ADT: 70,950

ROUTE 126

Good

Over: HOLLENBECK RIVER

AT JCT OF RT 126 &SAND RD, CT

Built 1991 Load: 63.5 t ADT: 1,200

SHEPARD HILL ROAD

Good

Over: PROV & WORC RAILROAD

0.5 MI EAST OF ROUTE 12, CT

Built 2000 Load: 63.6 t ADT: 610

INTERSTATE-91 SB

Good

Over: ROUTE 75 (POQUONOCK AVE)

OVER ROUTE 75, CT

Built 1991 Load: 63.7 t ADT: 64,250

SR 800

Good

Over: MAD RIVER

100 FEET SOUTH OF U.S. 44, CT

Built 2022 Load: 63.8 t ADT: 3,500

HATFIELD HILL ROAD

Good

Over: WEST RIVER

0.3 MI E OF ROUTE 69, CT

Built 1999 Load: 63.8 t ADT: 462

ROUTE 184

Good

Over: WHITFORD BROOK

0.3 MI E OF ROUTE 27, CT

Built 2010 Load: 64.5 t ADT: 3,700

ROUTE 15

Good

Over: TOELLES ROAD

.3 MILES WEST OF ROUTE 5, CT

Built 1947 Load: 64.8 t ADT: 68,200

FISHER HILL ROAD

Good

Over: ROARING BROOK

350 Ft. East of Rte 83, CT

Built 2020 Load: 64.8 t ADT: 1,061

ROUTE 67

Good

Over: JACKS BROOK

2.1 MI. W. OF WOODBURY TL, CT

Built 1990 Load: 64.8 t ADT: 4,700

ROUTE 15 TR 807

Good

Over: ROUTE 25 RAMP 003

330 FT W OF ROUTE 127, CT

Built 1981 Load: 64.9 t ADT: 7,100

WALL STREET

Good

Over: WHARTON BROOK

0.1 MI E. OF S. ELM ST, CT

Built 2006 Load: 65.0 t ADT: 425

U.S. ROUTE 7

Good

Over: NORWALK RIVER

1.9 MI NORTH OF ROUTE 102, CT

Built 2005 Load: 65.1 t ADT: 15,500

EAST JOHNSON AVE

Good

Over: QUINNIPIAC RIVER

1.1 MI E OF ROUTE 10, CT

Built 2016 Load: 65.8 t ADT: 4,700

HILLHOUSE AVENUE

Good

Over: FARMINGTON CANAL GREENWA

BETWEEN TRUMBULL&GROVE ST, CT

Built 1910 Load: 66.4 t ADT: 6,400

FLAX MILL LANE

Good

Over: WEPAWAUG RIVER

660 FT W OF ROUTE 121, CT

Built 2020 Load: 66.7 t ADT: 707

FERN STREET

Good

Over: TROUT BROOK

30 WEST OF TROUTBROOK DR, CT

Built 1983 Load: 66.7 t ADT: 10,686

INGHAM HILL ROAD

Good

Over: AMTRAK RAILROAD

0.4 MI N OF US ROUTE 1, CT

Built 1990 Load: 67.0 t ADT: 1,195

ROUTE 8

Good

Over: JACKSON STREET

2.0 MI N OF ROUTE 34, CT

Built 1957 Load: 67.1 t ADT: 63,800

ROUTE 67

Good

Over: GREAT BROOK

100 SOUTH OF RTE 202 JCT, CT

Built 2010 Load: 67.4 t ADT: 6,700

U.S. ROUTE 6

Good

Over: MERRICK BROOK AND TRAIL

0.3 MI EAST CHAPLIN T.L., CT

Built 1948 Load: 67.7 t ADT: 8,600

GRANDVIEW AVENUE

Good

Over: ROBBINS STREET

AT SW CORNER OF HOSPITAL, CT

Built 1995 Load: 68.0 t ADT: 8,100

ARCH STREET

Good

Over: LONG MEADOW POND BROOK

AT JCT OF RUBBER AVE&ARCH, CT

Built 1982 Load: 68.0 t ADT: 1,570

ROUTE 9 SOUTHBOUND

Good

Over: MATTABESSET RIVER

1.5 MI SOUTH OF ROUTE 72, CT

Built 1988 Load: 68.0 t ADT: 33,900

OLD ROUTE 63

Good

Over: HOP BROOK

8.05 KM W OF WATERBURY, CT

Built 1935 Load: 68.0 t ADT: 30

I-395 TR 803

Good

Over: EAST FRANKLIN STREET

2.14 MI NO PLAINFIELD TL, CT

Built 1963 Load: 68.4 t ADT: 2,700

DUTTON ROAD

Good

Over: LITTLE RIVER

100 FT SOUTH OF ROUTE 67, CT

Built 2022 Load: 68.4 t ADT: 240

VERNON STREET

Good

Over: LYDALL BROOK

AT LYDALL STREET NO. 2, CT

Built 1987 Load: 68.4 t ADT: 5,100

DUBLIN HILL ROAD

Good

Over: PONSET BROOK

40 FT N OF DEPOT RD, CT

Built 2019 Load: 68.7 t ADT: 810

WEST CENTER ST EXT

Good

Over: EIGHT MILE RIVER

500 FT E OF I-84, CT

Built 1961 Load: 69.0 t ADT: 1,994

GROVE STREET

Good

Over: GREAT BROOK

300-FT SO. RTE 202 INT, CT

Built 2010 Load: 69.0 t ADT: 10,360

ROUTE 14

Good

Over: MERRICK BROOK

.1 MILE WEST OF ROUTE 97, CT

Built 2020 Load: 69.3 t ADT: 4,800

OLD KINGS HWY NO.

Good

Over: FIVE MILE RIVER

0.6 MI E OF I-95, CT

Built 1995 Load: 69.3 t ADT: 4,747

HUBBARD ROAD

Good

Over: WEST RIVER

0.2 MI W OF ROUTE 77, CT

Built 2007 Load: 69.3 t ADT: 2,362

ROUTE 2

Good

Over: SHETUCKET RIVER

.28MI E OF JCT RTE 82 EB, CT

Built 1959 Load: 69.7 t ADT: 16,200

TATNIC ROAD

Good

Over: STONY BROOK

100 FT E JCT MASON ROAD, CT

Built 2000 Load: 69.7 t ADT: 1,345

LEONARD ROAD

Good

Over: FURNACE BROOK

130 FT FROM JCT ROUTE 19, CT

Built 2022 Load: 69.7 t ADT: 1,200

SOUTH RIVER STREET

Good

Over: FRESHWATER BROOK

50 FT N OF ASNUNTUCK ST, CT

Built 2023 Load: 70.0 t ADT: 1,078

WEST STREET

Good

Over: GREAT BROOK

0.4 MI SOUTH OF ROUTE 202, CT

Built 2002 Load: 70.0 t ADT: 892

ROUTE 83

Good

Over: AVERY BROOK

1.3 MI NORTH OF ROUTE 190, CT

Built 1957 Load: 70.3 t ADT: 3,400

ROUTE 20

Good

Over: SALMON BROOK

0.6 MI EAST OF RTE 10/202, CT

Built 1940 Load: 71.9 t ADT: 12,500

ROUTE 189

Good

Over: SALMON BROOK

0.2 MI NO OF E. GRANBY TL, CT

Built 2000 Load: 71.9 t ADT: 6,400

BARBER HILL ROAD

Good

Over: MOOSUP RIVER

300 FT SOUTH OF ROUTE 14, CT

Built 1930 Load: 72.7 t ADT: 402

NORTH STERLING RD

Good

Over: QUANDUCK BROOK

600 FROM JCT MAIN STREET, CT

Built 1940 Load: 72.7 t ADT: 490

VILLAGE HILL ROAD

Good

Over: ROARING BROOK

0.4 MI EAST OF ROUTE 32, CT

Built 2003 Load: 72.9 t ADT: 806

SANDY BROOK ROAD

Good

Over: SANDY BROOK

1.9 MILES E OF ROUTE 183, CT

Built 2023 Load: 72.9 t ADT: 670

US ROUTE 202

Good

Over: BANTAM RIVER

.75 MI E OF JCT RTE 63, CT

Built 2019 Load: 73.9 t ADT: 3,600

U.S. ROUTE 1

Good

Over: NOROTON RIVER

AT THE DARIEN TOWN LINE, CT

Built 1913 Load: 74.2 t ADT: 7,900

I-95 SB RAMP 355

Good

Over: ROUTE 130 EB

I-95 SOUTHBOUND EXIT 29, CT

Built 1999 Load: 74.4 t ADT: 5,100

Showing 4,001-4,050 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.